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The Scientific Method Lesson Plan: Developing Hypotheses

Submitted by: charlie conway.

This is a lesson plan designed to be incorporated into a elementary or middle school general science class. Using BrainPOP and its resources, students will be introduced (or further exposed) to the steps necessary to undertake scientific experimentation leading (perhaps) to a Science Fair project. The Scientific Method is a core structure in learning about scientific inquiry, and although there are many variations of this set of procedures, they all usually have similar components. This lesson should take 45-60 minutes, with opportunities for extending the lesson further.

Students will:

  • Students will use BrainPOP features to build their understandings of the Scientific Method.
  • Students will learn how to identify and write effective hypotheses.
  • Students will use game play to write an appropriate hypothesis for an experiment.
  • Students will identify and utilize the tools necessary to design a scientific investigation.
  • Laptops/Computers
  • Interactive White Board
  • Pencil/Paper
  • Class set of photocopies of the Scientific Method Flow Chart
  • BrainPOP accounts (optional)



These procedures may be modified according to the needs/resources of each teacher & class. For example, you may decide to do the quiz with pencil/paper, or do the quiz as a class.

Lesson Procedure:

  • Ask the students how scientists answer questions and solve problems. Take a few minutes to explore students' prior knowledge with a short discussion.
  • Tell the class that you're going to watch a BrainPOP movie about answering a scientific question about plant growth.
  • Show the BrainPOP movie on the Scientific Method two times. The first time, students should just watch and listen. The second time they should take notes. Pause the movie at critical STOP points.
  • Students should log on to their individual student accounts and take the Scientific Method Quiz to give the teacher some immediate feedback. (This can also be done as a pre-assessment, or at the very end of the lesson). NOTE: If you choose to, you can give a pencil/paper quiz also; students who work best with electronic media can be given accommodations). If you don't have access to individual student logins via MyBrainPOP (a school subscription), students can take the Review Quiz or paper quiz instead.
  • Discuss the main points from the movie: a. Write the definition of the scientific method: the procedure scientists use to help explain why things happen. b. Make a list on the board of the steps mentioned as part of the scientific method: problem, fact finding, observation, inference, hypothesis, experiment, conclusions. c. Tell students that there are various versions of the scientific method that they may see, but they are all basically the same.
  • Hand out the Scientific Method Flow Chart . Introduce the "If...then...because..." format for writing hypotheses. Give the students 10 minutes to complete the sheet with their group. They may use their notes from the movie to help them, and/or work collaboratively with other students.
  • Discuss some of the student responses in class. Focus on the hypotheses, and explain that a good hypothesis is a testable explanation of the problem. For example, a good hypothesis to the third problem would be, "If I move farther away from the microwave oven, then the cell phone signal will improve because I am further away from the source of interference." Show how this is a TESTABLE hypothesis that can lead to a scientific experiment.
  • Introduce the students to the Pavlov’s Dog game in GameUP. Allow time for the kids to explore the game without telling them why they are playing it.
  • After 10-15 minutes, have the students take a break from playing, and have a short discussion about the game. Ask if anyone was able to complete the task successfully, and have them share how they got the "diploma." If time allows, show the students how to complete the task so that they all understand that the dog has been conditioned to respond to a stimulus (noise before food has been introduced).
  • Have the students write a hypothesis that Pavlov may have written before he started his experiment. Students can either do this with pencil/paper, or the teacher may create a BrainPOP quiz and have students submit their hypothesis electronically. This may be used as a part of the assessment.
  • Choose some sample responses from the students, highlighting the hypotheses that are TESTABLE, and not just guesses or predictions.

If this lesson is an introduction to allowing students to plan and carry out their own experiments, then all that follows is naturally an extension to the lesson.

Other, shorter extensions are easy to develop as well.

Extension Activities:

hypothesis 7th grade

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  • How to Write a Strong Hypothesis | Steps & Examples

How to Write a Strong Hypothesis | Steps & Examples

Published on May 6, 2022 by Shona McCombes . Revised on November 20, 2023.

A hypothesis is a statement that can be tested by scientific research. If you want to test a relationship between two or more variables, you need to write hypotheses before you start your experiment or data collection .

Example: Hypothesis

Daily apple consumption leads to fewer doctor’s visits.

Table of contents

What is a hypothesis, developing a hypothesis (with example), hypothesis examples, other interesting articles, frequently asked questions about writing hypotheses.

A hypothesis states your predictions about what your research will find. It is a tentative answer to your research question that has not yet been tested. For some research projects, you might have to write several hypotheses that address different aspects of your research question.

A hypothesis is not just a guess – it should be based on existing theories and knowledge. It also has to be testable, which means you can support or refute it through scientific research methods (such as experiments, observations and statistical analysis of data).

Variables in hypotheses

Hypotheses propose a relationship between two or more types of variables .

  • An independent variable is something the researcher changes or controls.
  • A dependent variable is something the researcher observes and measures.

If there are any control variables , extraneous variables , or confounding variables , be sure to jot those down as you go to minimize the chances that research bias  will affect your results.

In this example, the independent variable is exposure to the sun – the assumed cause . The dependent variable is the level of happiness – the assumed effect .

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Step 1. Ask a question

Writing a hypothesis begins with a research question that you want to answer. The question should be focused, specific, and researchable within the constraints of your project.

Step 2. Do some preliminary research

Your initial answer to the question should be based on what is already known about the topic. Look for theories and previous studies to help you form educated assumptions about what your research will find.

At this stage, you might construct a conceptual framework to ensure that you’re embarking on a relevant topic . This can also help you identify which variables you will study and what you think the relationships are between them. Sometimes, you’ll have to operationalize more complex constructs.

Step 3. Formulate your hypothesis

Now you should have some idea of what you expect to find. Write your initial answer to the question in a clear, concise sentence.

4. Refine your hypothesis

You need to make sure your hypothesis is specific and testable. There are various ways of phrasing a hypothesis, but all the terms you use should have clear definitions, and the hypothesis should contain:

  • The relevant variables
  • The specific group being studied
  • The predicted outcome of the experiment or analysis

5. Phrase your hypothesis in three ways

To identify the variables, you can write a simple prediction in  if…then form. The first part of the sentence states the independent variable and the second part states the dependent variable.

In academic research, hypotheses are more commonly phrased in terms of correlations or effects, where you directly state the predicted relationship between variables.

If you are comparing two groups, the hypothesis can state what difference you expect to find between them.

6. Write a null hypothesis

If your research involves statistical hypothesis testing , you will also have to write a null hypothesis . The null hypothesis is the default position that there is no association between the variables. The null hypothesis is written as H 0 , while the alternative hypothesis is H 1 or H a .

  • H 0 : The number of lectures attended by first-year students has no effect on their final exam scores.
  • H 1 : The number of lectures attended by first-year students has a positive effect on their final exam scores.
Research question Hypothesis Null hypothesis
What are the health benefits of eating an apple a day? Increasing apple consumption in over-60s will result in decreasing frequency of doctor’s visits. Increasing apple consumption in over-60s will have no effect on frequency of doctor’s visits.
Which airlines have the most delays? Low-cost airlines are more likely to have delays than premium airlines. Low-cost and premium airlines are equally likely to have delays.
Can flexible work arrangements improve job satisfaction? Employees who have flexible working hours will report greater job satisfaction than employees who work fixed hours. There is no relationship between working hour flexibility and job satisfaction.
How effective is high school sex education at reducing teen pregnancies? Teenagers who received sex education lessons throughout high school will have lower rates of unplanned pregnancy teenagers who did not receive any sex education. High school sex education has no effect on teen pregnancy rates.
What effect does daily use of social media have on the attention span of under-16s? There is a negative between time spent on social media and attention span in under-16s. There is no relationship between social media use and attention span in under-16s.

If you want to know more about the research process , methodology , research bias , or statistics , make sure to check out some of our other articles with explanations and examples.

  • Sampling methods
  • Simple random sampling
  • Stratified sampling
  • Cluster sampling
  • Likert scales
  • Reproducibility


  • Null hypothesis
  • Statistical power
  • Probability distribution
  • Effect size
  • Poisson distribution

Research bias

  • Optimism bias
  • Cognitive bias
  • Implicit bias
  • Hawthorne effect
  • Anchoring bias
  • Explicit bias

A hypothesis is not just a guess — it should be based on existing theories and knowledge. It also has to be testable, which means you can support or refute it through scientific research methods (such as experiments, observations and statistical analysis of data).

Null and alternative hypotheses are used in statistical hypothesis testing . The null hypothesis of a test always predicts no effect or no relationship between variables, while the alternative hypothesis states your research prediction of an effect or relationship.

Hypothesis testing is a formal procedure for investigating our ideas about the world using statistics. It is used by scientists to test specific predictions, called hypotheses , by calculating how likely it is that a pattern or relationship between variables could have arisen by chance.

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Formative Assessment Probe

What Is a Hypothesis?

By Page Keeley

Uncovering Student Ideas in Science, Volume 3: Another 25 Formative Assessment Probes

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This is the new updated edition of the first book in the bestselling  Uncovering Student Ideas in Science  series. Like the first edition of volume 1, this book helps pinpoint what your students know (or think they know) so you can monitor their learning and adjust your teaching accordingly. Loaded with classroom-friendly features you can use immediately, the book includes 25 “probes”—brief, easily administered formative assessments designed to understand your students’ thinking about 60 core science concepts.

What Is a Hypothesis?

Access this probe as a Google form:  English

Download this probe as an editable PDF: English

The purpose of this assessment probe is to elicit students’ ideas about hypotheses. The probe is designed to find out if students understand what a hypothesis is, when it is used, and how it is developed.

Type of Probe

Justified List

Related Concepts

hypothesis, nature of science, scientific inquiry, scientific method


The best choices are A, B, G, K, L, and M. However, other possible answers open up discussions to contrast with the provided definition. A hypothesis is a tentative explanation that can be tested and is based on observation and/or scientific knowledge such as that that has been gained from doing background research. Hypotheses are used to investigate a scientific question. Hypotheses can be tested through experimentation or further observation, but contrary to how some students are taught to use the “scientific method,” hypotheses are not proved true or correct. Students will often state their conclusions as “My hypothesis is correct because my data prove…,” thereby equating positive results with proof (McLaughlin 2006, p. 61). In essence, experimentation as well as other means of scientific investigation never prove a hypothesis—the hypothesis gains credibility from the evidence obtained from data that support it. Data either support or negate a hypothesis but never prove something to be 100% true or correct.

Hypotheses are often confused with questions. A hypothesis is not framed as a question but rather provides a tentative explanation in response to the scientific question that leads the investigation. Sometimes the word hypothesis is oversimplified by being defined as “an educated guess.” This terminology fails to convey the explanatory or predictive nature of scientific hypotheses and omits what is most important about hypotheses: their purpose. Hypotheses are developed to explain observations, such as notable patterns in nature; predict the outcome of an experiment based on observations or prior scientific knowledge; and guide the investigator in seeking and paying attention to the right data. Calling a hypothesis a “guess” undermines the explanation that underscores a hypothesis.

Predictions and hypotheses are not the same. A hypothesis, which is a tentative explanation, can lead to a prediction. Predictions forecast the outcome of an experiment but do not include an explanation. Predictions often use if-then statements, just as hypotheses do, but this does not make a prediction a hypothesis. For example, a prediction might take the form of, “If I do [X], then [Y] will happen.” The prediction describes the outcome but it does not provide an explanation of why that outcome might result or describe any relationship between variables.

Sometimes the words hypothesis , theory , and law are inaccurately portrayed in science textbooks as a hierarchy of scientific knowledge, with the hypothesis being the first step on the way to becoming a theory and then a law. These concepts do not form a sequence for the development of scientific knowledge because each represents a different type of knowledge.

Not every investigation requires a hypothesis. Some types of investigations do not lend themselves to hypothesis testing through experimentation. A good deal of science is observational and descriptive—the study of biodiversity, for example, usually involves looking at a wide variety of specimens and maybe sketching and recording their unique characteristics. A biologist studying biodiversity might wonder, “What types of birds are found on island X?” The biologist would observe sightings of birds and perhaps sketch them and record their bird calls but would not be guided by a specific hypothesis. Many of the great discoveries in science did not begin with a hypothesis in mind. For example, Charles Darwin did not begin his observations of species in the Galapagos with a hypothesis in mind.

Contrary to the way hypotheses are often stated by students as an unimaginative response to a question posed at the beginning of an experiment, particularly those of the “cookbook” type, the generation of hypotheses by scientists is actually a creative and imaginative process, combined with the logic of scientific thought. “The process of formulating and testing hypotheses is one of the core activities of scientists. To be useful, a hypothesis should suggest what evidence would support it and what evidence would refute it. A hypothesis that cannot in principle be put to the test of evidence may be interesting, but it is not likely to be scientifically useful” (AAAS 1988, p. 5).

Curricular and Instructional Considerations

Elementary Students

In the elementary school grades, students typically engage in inquiry to begin to construct an understanding of the natural world. Their inquiries are initiated by a question. If students have a great deal of knowledge or have made prior observations, they might propose a hypothesis; in most cases, however, their knowledge and observations are too incomplete for them to hypothesize. If elementary school students are required to develop a hypothesis, it is often just a guess, which does little to contribute to an understanding of the purpose of a hypothesis. At this grade level, it is usually sufficient for students to focus on their questions, instead of hypotheses (Pine 1999).

Middle School Students

At the middle school level, students develop an understanding of what a hypothesis is and when one is used. The notion of a testable hypothesis through experimentation that involves variables is introduced and practiced at this grade level. However, there is a danger that students will think every investigation must include a hypothesis. Hypothesizing as a skill is important to develop at this grade level but it is also important to develop the understandings of what a hypothesis is and why and how it is developed.

High School Students

At this level, students have acquired more scientific knowledge and experiences and so are able to propose tentative explanations. They can formulate a testable hypothesis and demonstrate the logical connections between the scientific concepts guiding a hypothesis and the design of an experiment (NRC 1996).

Administering the Probe

This probe is best used as is at the middle school and high school levels, particularly if students have been previously exposed to the word hypothesis or its use. Remove any answer choices students might not be familiar with. For example, if they have not encountered if-then reasoning, eliminate this distracter. The probe can also be modified as a simpler version for students in grades 3–5 by leaving out some of the choices and simplifying the descriptions.

K–4 Understandings About Scientific Inquiry

  • Scientific investigations involve asking and answering a question and comparing the answer with what scientists already know about the world.
  • Scientists develop explanations using observations (evidence) and what they already know about the world (scientific knowledge).

5–8 Understandings About Scientific Inquiry

  • Different kinds of questions suggest different kinds of investigations. Some investigations involve observing and describing objects, organisms, or events; some involve collecting specimens; some involve experiments; some involve seeking more information; some involve discovery of new objects and phenomena; and some involve making models.
  • Current scientific knowledge and understanding guide scientific investigations. Different scientific domains employ different methods, core theories, and standards to advance scientific knowledge and understanding.

5–8 Science as a Human Endeavor

  • Science is very much a human endeavor, and the work of science relies on basic human qualities such as reasoning, insight, energy, skill, and creativity.

9–12 Abilities Necessary to Do Scientific Inquiry

  • Identify questions and concepts that guide scientific investigations.*

9–12 Understandings About Scientific Inquiry

  • Scientists usually inquire about how physical, living, or designed systems function. Conceptual principles and knowledge guide scientific inquiries. Historical and current scientific knowledge influence the design and interpretation of investigations and the evaluation of proposed explanations made by other scientists.

*Indicates a strong match between the ideas elicited by the probe and a national standard’s learning goal.

K–2 Scientific Inquiry

  • People can often learn about things around them by just observing those things carefully, but sometimes they can learn more by doing something to the things and noting what happens.

3–5 Scientific Inquiry

  • Scientists’ explanations about what happens in the world come partly from what they observe and partly from what they think. Sometimes scientists have different explanations for the same set of observations. That usually leads to their making more observations to resolve the differences.

6–8 Scientific Inquiry

  • Scientists differ greatly in what phenomena they study and how they go about their work. Although there is no fixed set of steps that all scientists follow, scientific investigations usually involve the collection of relevant evidence, the use of logical reasoning, and the application of imagination in devising hypotheses and explanations to make sense of the collected evidence.*

6–8 Values and Attitudes

  • Even if they turn out not to be true, hypotheses are valuable if they lead to fruitful investigations.*

9–12 Scientific Inquiry

  • Hypotheses are widely used in science for choosing what data to pay attention to and what additional data to seek and for guiding the interpretation of the data (both new and previously available).*

Related Research

  • Students generally have difficulty with explaining how science is conducted because they have had little contact with real scientists. Their familiarity with doing science, even at older ages, is “school science,” which is often not how science is generally conducted in the scientific community (Driver et al. 1996).
  • Despite over 10 years of reform efforts in science education, research still shows that students typically have inadequate conceptions of what science is and what scientists do (Schwartz 2007).
  • Upper elementary school and middle school students may not understand experimentation as a method of testing ideas, but rather as a method of trying things out or producing a desired outcome (AAAS 1993).
  • Middle school students tend to invoke personal experiences as evidence to justify their hypothesis. They seem to think of evidence as selected from what is already known or from personal experience or secondhand sources, not as information produced through experiment (AAAS 1993).

Related NSTA Resources

American Association for the Advancement of Science (AAAS). 1993. Benchmarks for science literacy. New York: Oxford University Press.

Keeley, P. 2005. Science curriculum topic study: Bridging the gap between standards and practice. Thousand Oaks, CA: Corwin Press.

McLaughlin, J. 2006. A gentle reminder that a hypothesis is never proven correct, nor is a theory ever proven true. Journal of College Science Teaching 36 (1): 60–62.

National Research Council (NRC). 1996. National science education standards. Washington, DC: National Academy Press.

Schwartz, R. 2007. What’s in a word? How word choice can develop (mis)conceptions about the nature of science. Science Scope 31 (2): 42–47.

VanDorn, K., M. Mavita, L. Montes, B. Ackerson, and M. Rockley. 2004. Hypothesis-based learning. Science Scope 27: 24–25.

Suggestions for Instruction and Assessment

  • The “scientific method” is often the first topic students encounter when using textbooks and this can erroneously imply that there is a rigid set of steps that all scientists follow, including the development of a hypothesis. Often the scientific method described in textbooks applies to experimentation, which is only one of many ways scientists conduct their work. Embedding explicit instruction of the various ways to do science in the actual investigations students do throughout the year as well as in their studies of investigations done by scientists is a better approach to understanding how science is done than starting off the year with the scientific method in a way that is devoid of a context through which students can learn the content and process of science.
  • Students often participate in science fairs that may follow a textbook scientific method of posing a question, developing a hypothesis, and so on, that incorrectly results in students “proving” their hypothesis. Make sure students understand that a hypothesis can be disproven, but it is never proven, which implies 100% certainty.
  • Help students understand that science begins with a question. The structure of some school lab reports may lead students to believe that all investigations begin with a hypothesis. While some investigations do begin with a hypothesis, in most cases, they begin with a question. Sometimes it is just a general question.
  • A technique to help students maintain a consistent image of science as inquiry throughout the year by paying more careful attention to the words they use is to create a “caution words” poster or bulletin board (Schwartz 2007). Important words that have specific meanings in science but are often used inappropriately in the science classroom and through everyday language can be posted in the room as a reminder to pay careful attention to how students are using these words. For example, words like hypothesis and scientific method can be posted here. Words that are banned when referring to hypotheses include prove, correct, and true.
  • Use caution when asking students to write lab reports that use the same format regardless of the type of investigation conducted. The format used in writing about an investigation may imply a rigid, fixed process or erroneously misrepresent aspects of science, such as that hypotheses are developed for every scientific investigation.
  • Avoid using hypotheses with younger children when they result in guesses. It is better to start with a question and have students make a prediction about what they think will happen and why. As they acquire more conceptual understanding and experience a variety of observations, they will be better prepared to develop hypotheses that reflect the way science is done.
  • Avoid using “educated guess” as a description for hypothesis. The common meaning of the word guess implies no prior knowledge, experience, or observations.
  • Scaffold hypothesis writing for students by initially having them use words like may in their statements and then formalizing them with if-then statements. For example, students may start with the statement, “The growth of algae may be affected by temperature.” The next step would be to extend this statement to include a testable relationship, such as, “If the temperature of the water increases, then the algae population will increase.” Encourage students to propose a tentative explanation and then consider how they would go about testing the statement.

American Association for the Advancement of Science (AAAS). 1988. Science for all Americans. New York: Oxford University Press.

Driver, R., J. Leach, R. Millar, and P. Scott. 1996. Young people’s images of science. Buckingham, UK: Open University Press.

Pine, J. 1999. To hypothesize or not to hypothesize. In Foundations: A monograph for professionals in science, mathematics, and technology education. Vol. 2. Inquiry: Thoughts, views, and strategies for the K–5 classroom. Arlington, VA: National Science Foundation.

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Hypothesis For Kids

Ai generator.

hypothesis 7th grade

Crafting a hypothesis isn’t just for scientists in white lab coats; even young budding researchers can join in the fun! When kids learn to frame their curious wonders as hypothesis statements, they pave the way for exciting discoveries. Our guide breaks down the world of hypothesis writing into kid-friendly chunks, complete with relatable thesis statement examples and easy-to-follow tips. Dive in to spark a love for inquiry and nurture young scientific minds!

What is an example of a Hypothesis for Kids?

Question: Do plants grow taller when they are watered with coffee instead of water?

Hypothesis: If I water a plant with coffee instead of water, then the plant will not grow as tall because coffee might have substances that aren’t good for plants.

This hypothesis is based on a simple observation or question a child might have, and it predicts a specific outcome (the plant not growing as tall) due to a specific condition (being watered with coffee). It’s presented in simple language suitable for kids.

100 Kids Hypothesis Statement Examples

Kids Hypothesis Statement Examples

Size: 170 KB

Children’s innate curiosity lays the foundation for numerous questions about the world around them. Framing these questions as good hypothesis statements can transform them into exciting learning experiments. Presented below are relatable and straightforward examples crafted especially for young minds, offering them a structured way to articulate their wonders and predictions.

  • Sunlight & Plant Growth : If a plant gets more sunlight, then it will grow taller.
  • Sugary Drinks & Tooth Decay : Drinking sugary drinks daily will lead to faster tooth decay.
  • Chocolates & Energy : Eating chocolate will make me feel more energetic.
  • Moon Phases & Sleep : I’ll sleep more during a full moon night.
  • Homework & Weekend Moods : If I finish my homework on Friday, I’ll be happier over the weekend.
  • Pets & Happiness : Owning a pet will make a child happier.
  • Rain & Worms : Worms come out more after it rains.
  • Shadows & Time of Day : Shadows are longer in the evening than at noon.
  • Snow & School Holidays : More snow means there’s a better chance of school being canceled.
  • Ice Cream & Brain Freeze : Eating ice cream too fast will give me a brain freeze.
  • Video Games & Dreams : Playing video games before bed might make my dreams more vivid.
  • Green Vegetables & Strength : Eating more green vegetables will make me stronger.
  • Bicycles & Balance : The more I practice, the better I’ll get at riding my bike without training wheels.
  • Stars & Wishes : If I wish on the first star I see at night, my wish might come true.
  • Cartoons & Laughing : Watching my favorite cartoon will always make me laugh.
  • Soda & Bone Health : Drinking soda every day will make my bones weaker.
  • Beach Visits & Sunburn : If I don’t wear sunscreen at the beach, I’ll get sunburned.
  • Loud Noises & Pet Behavior : My cat hides when she hears loud noises.
  • Bedtime & Morning Energy : Going to bed early will make me feel more energetic in the morning.
  • Healthy Snacks & Hunger : Eating a healthy snack will keep me full for longer. …
  • Toys & Sharing : The more toys I have, the more I want to share with my friends.
  • Homemade Cookies & Taste : Homemade cookies always taste better than store-bought ones.
  • Books & Imagination : The more books I read, the more adventures I can imagine.
  • Jumping & Height : The more I practice, the higher I can jump.
  • Singing & Mood : Singing my favorite song always makes me happy.
  • Snowmen & Temperature : If the temperature rises, my snowman will melt faster.
  • Costumes & Play : Wearing a costume will make playtime more fun.
  • Gardening & Patience : Waiting for my plants to grow teaches me patience.
  • Night Lights & Sleep : Having a night light makes it easier for me to sleep.
  • Handwriting & Practice : The more I practice, the better my handwriting will become.
  • Painting & Creativity : Using more colors in my painting lets me express my creativity better.
  • Puzzles & Problem Solving : The more puzzles I solve, the better I become at problem-solving.
  • Dancing & Coordination : The more I dance, the more coordinated I will become.
  • Stargazing & Constellations : If I stargaze every night, I’ll recognize more constellations.
  • Bird Watching & Species Knowledge : The more I watch birds, the more species I can identify.
  • Cooking & Skill : If I help in the kitchen often, I’ll become a better cook.
  • Swimming & Confidence : The more I swim, the more confident I become in the water.
  • Trees & Birds’ Nests : The taller the tree, the more likely it is to have birds’ nests.
  • Roller Skating & Balance : If I roller skate every weekend, I’ll improve my balance.
  • Drawing & Observation : The more I draw, the better I become at observing details.
  • Sandcastles & Water : If I use wet sand, I can build a stronger sandcastle.
  • Hiking & Endurance : The more I hike, the farther I can walk without getting tired.
  • Camping & Outdoor Skills : If I go camping often, I’ll learn more about surviving outdoors.
  • Magic Tricks & Practice : The more I practice a magic trick, the better I’ll get at performing it.
  • Stickers & Collection : If I collect stickers, my album will become more colorful.
  • Board Games & Strategy : The more board games I play, the better strategist I’ll become.
  • Pets & Responsibility : The more I take care of my pet, the more responsible I become.
  • Music & Concentration : Listening to calm music while studying will help me concentrate better.
  • Photographs & Memories : The more photos I take, the more memories I can preserve.
  • Rainbows & Rain : If it rains while the sun is out, I might see a rainbow.
  • Museums & Knowledge : Every time I visit a museum, I learn something new.
  • Fruits & Health : Eating more fruits will keep me healthier.
  • Stories & Vocabulary : The more stories I listen to, the more new words I learn.
  • Trees & Fresh Air : The more trees there are in a park, the fresher the air will be.
  • Diary & Feelings : Writing in my diary helps me understand my feelings better.
  • Planets & Telescopes : If I look through a telescope, I’ll see more planets clearly.
  • Crafting & Creativity : The more crafts I make, the more creative I become.
  • Snowflakes & Patterns : Every snowflake has a unique pattern.
  • Jokes & Laughter : The funnier the joke, the louder I’ll laugh.
  • Riddles & Thinking : Solving riddles makes me think harder.
  • Nature Walks & Observations : The quieter I am on a nature walk, the more animals I’ll spot.
  • Building Blocks & Structures : The more blocks I use, the taller my tower will be.
  • Kites & Wind : If there’s more wind, my kite will fly higher.
  • Popcorn & Movie Nights : Watching a movie with popcorn makes it more enjoyable.
  • Stars & Wishes : If I see a shooting star, I should make a wish.
  • Diets & Energy : Eating a balanced diet gives me more energy for playtime.
  • Clay & Sculptures : The more I play with clay, the better my sculptures will be.
  • Insects & Magnifying Glass : Using a magnifying glass will let me see more details of tiny insects.
  • Aquarium Visits & Marine Knowledge : Every time I visit the aquarium, I discover a new marine creature.
  • Yoga & Flexibility : If I practice yoga daily, I’ll become more flexible.
  • Toothpaste & Bubbles : The more toothpaste I use, the more bubbles I’ll get while brushing.
  • Journals & Memories : Writing in my journal every day helps me remember special moments.
  • Piggy Banks & Savings : The more coins I save, the heavier my piggy bank will get.
  • Baking & Measurements : If I measure ingredients accurately, my cake will turn out better.
  • Coloring Books & Art Skills : The more I color, the better I get at staying inside the lines.
  • Picnics & Outdoor Fun : Having a picnic makes a sunny day even more enjoyable.
  • Recycling & Environment : The more I recycle, the cleaner my environment will be.
  • Treasure Hunts & Discoveries : Every treasure hunt has a new discovery waiting.
  • Milk & Bone Health : Drinking milk daily will make my bones stronger.
  • Puppet Shows & Stories : The more puppet shows I watch, the more stories I learn.
  • Field Trips & Learning : Every field trip to a new place teaches me something different.
  • Chores & Responsibility : The more chores I do, the more responsible I feel.
  • Fishing & Patience : Fishing teaches me to be patient while waiting for a catch.
  • Fairy Tales & Imagination : Listening to fairy tales expands my imagination.
  • Homemade Pizza & Toppings : The more toppings I add, the tastier my homemade pizza will be.
  • Gardens & Butterflies : If I plant more flowers, I’ll see more butterflies in my garden.
  • Raincoats & Puddles : Wearing a raincoat lets me jump in puddles without getting wet.
  • Gymnastics & Balance : The more I practice gymnastics, the better my balance will be.
  • Origami & Craft Skills : The more origami I fold, the better my craft skills become.
  • Basketball & Shooting Skills : The more I practice, the better I get at shooting baskets.
  • Fireflies & Night Beauty : Catching fireflies makes summer nights magical.
  • Books & Knowledge : The more books I read, the smarter I become.
  • Pillows & Forts : With more pillows, I can build a bigger fort.
  • Lemonade & Summers : Drinking lemonade makes hot summer days refreshing.
  • Bicycles & Balance : The more I practice, the better I get at riding my bike without training wheels.
  • Pencils & Drawings : If I have colored pencils, my drawings will be more colorful.
  • Ice Cream & Happiness : Eating ice cream always makes me happy.
  • Beach Visits & Shell Collections : Every time I visit the beach, I find new shells for my collection.
  • Jump Ropes & Fitness : The more I jump rope, the fitter I become.
  • Tea Parties & Imagination : Hosting tea parties lets my imagination run wild.

Simple Hypothesis Statement Examples for Kids

Simple hypothesis are straightforward predictions that can be tested easily. They help children understand the relationship between two variables. Here are some examples tailored just for kids.

  • Plants & Sunlight : Plants placed near the window will grow taller than those in the dark.
  • Chocolates & Happiness : Eating chocolates can make kids feel happier.
  • Rain & Puddles : The more it rains, the bigger the puddles become.
  • Homework & Learning : Doing homework helps kids understand lessons better.
  • Toys & Sharing : Sharing toys with friends makes playtime more fun.
  • Pets & Care : Taking care of a pet fish helps it live longer.
  • Storytime & Sleep : Listening to a bedtime story helps kids sleep faster.
  • Brushing & Cavity : Brushing teeth daily prevents cavities.
  • Games & Skill : Playing a new game every day improves problem-solving skills.
  • Baking & Patience : Waiting for cookies to bake teaches patience.

Hypothesis Statement Examples for Kids Psychology

Child psychology hypothesis delves into how kids think, behave, and process emotions. These hypotheses help understand the psychological aspects of children’s behaviors.

  • Emotions & Colors : Kids might feel calm when surrounded by blue and energetic with red.
  • Friendship & Self-esteem : Making friends can boost a child’s self-confidence.
  • Learning Styles & Memory : Some kids remember better by seeing, while others by doing.
  • Play & Development : Pretend play is crucial for cognitive development.
  • Rewards & Motivation : Giving small rewards can motivate kids to finish tasks.
  • Music & Mood : Listening to soft music can calm a child’s anxiety.
  • Sibling Bonds & Sharing : Having siblings can influence a child’s willingness to share.
  • Feedback & Performance : Positive feedback can improve a kid’s academic performance.
  • Outdoor Play & Attention Span : Playing outside can help kids concentrate better in class.
  • Dreams & Reality : Kids sometimes can’t differentiate between dreams and reality.

Hypothesis Examples in Kid Friendly Words

Phrasing hypothesis in simple words makes it relatable and easier for kids to grasp. Here are examples with kid-friendly language.

  • Socks & Warmth : Wearing socks will keep my toes toasty.
  • Jumping & Energy : The more I jump, the more energy I feel.
  • Sandcastles & Water : A little water makes my sandcastle stand tall.
  • Stickers & Smiles : Getting a sticker makes my day shine brighter.
  • Rainbows & Rain : After the rain, I might see a rainbow.
  • Slides & Speed : The taller the slide, the faster I go.
  • Hugs & Love : Giving hugs makes me and my friends feel loved.
  • Stars & Counting : The darker it is, the more stars I can count.
  • Paint & Mess : The more paint I use, the messier it gets.
  • Bubbles & Wind : If I blow my bubble wand, the wind will carry them high.

Hypothesis Statement Examples for Kids in Research

Even in a research setting, research hypothesis should be age-appropriate for kids. These examples focus on concepts children might encounter in structured studies.

  • Reading & Vocabulary : Kids who read daily might have a richer vocabulary.
  • Games & Math Skills : Playing number games can improve math skills.
  • Experiments & Curiosity : Conducting science experiments can make kids more curious.
  • Doodles & Creativity : Drawing daily might enhance a child’s creativity.
  • Learning Methods & Retention : Kids who learn with visuals might remember lessons better.
  • Discussions & Understanding : Talking about a topic can deepen understanding.
  • Observation & Knowledge : Observing nature can increase a kid’s knowledge about the environment.
  • Puzzles & Cognitive Skills : Solving puzzles regularly might enhance logical thinking.
  • Music & Rhythmic Abilities : Kids who practice music might develop better rhythm skills.
  • Teamwork & Social Skills : Group projects can boost a child’s social skills.

Hypothesis Statement Examples for Kids Science Fair

Science fairs are a chance for kids to delve into the world of experiments and observations. Here are hypotheses suitable for these events.

  • Magnet & Metals : Certain metals will be attracted to a magnet.
  • Plants & Colored Light : Plants might grow differently under blue and red lights.
  • Eggs & Vinegar : An egg in vinegar might become bouncy.
  • Solar Panels & Sunlight : Solar panels will generate more power on sunny days.
  • Volcanoes & Eruptions : Mixing baking soda and vinegar will make a mini eruption.
  • Mirrors & Reflection : Shiny surfaces can reflect light better than dull ones.
  • Battery & Energy : Fresh batteries will make a toy run faster.
  • Density & Floating : Objects with lower density will float in water.
  • Shadows & Light Source : Moving the light source will change the shadow’s direction.
  • Freezing & States : Water turns solid when kept in the freezer.

Hypothesis Statement Examples for Science Experiments

Experiments let kids test out their predictions in real-time. Here are hypotheses crafted for various scientific tests.

  • Salt & Boiling Point : Adding salt will make water boil at a higher temperature.
  • Plants & Music : Playing music might affect a plant’s growth rate.
  • Rust & Moisture : Metals kept in a moist environment will rust faster.
  • Candles & Oxygen : A candle will burn out faster in an enclosed jar.
  • Fruits & Browning : Lemon juice can prevent cut fruits from browning.
  • Yeast & Sugar : Adding sugar will make yeast activate more vigorously.
  • Density & Layers : Different liquids will form layers based on their density.
  • Acids & Bases : Red cabbage juice will change color in acids and bases.
  • Soil Types & Water : Sandy soil will drain water faster than clay.
  • Thermometers & Temperatures : Thermometers will show higher readings in the sun.

Hypothesis Statement Examples for Kids At Home

These hypotheses are crafted for experiments and observations kids can easily make at home, using everyday items.

  • Chores & Time : Setting a timer will make me finish my chores faster.
  • Pets & Behavior : My cat sleeps more during the day than at night.
  • Recycling & Environment : Recycling more can reduce the trash in my home.
  • Cooking & Tastes : Adding spices will change the taste of my food.
  • Family Time & Bonding : Playing board games strengthens our family bond.
  • Cleaning & Organization : Organizing my toys daily will keep my room tidier.
  • Watering & Plant Health : Watering my plant regularly will keep its leaves green.
  • Decor & Mood : Changing the room decor can influence my mood.
  • Journals & Memories : Writing in my journal daily will help me remember fun events.
  • Photos & Growth : Taking monthly photos will show how much I’ve grown.

How do you write a hypothesis for kids? – A Step by Step Guide

Step 1: Start with Curiosity Begin with a question that your child is curious about. This could be something simple, like “Why is the sky blue?” or “Do plants need sunlight to grow?”

Step 2: Observe and Research Before formulating the hypothesis, encourage your child to observe the world around them. If possible, read or watch videos about the topic to gather information. The idea is to get a general understanding of the subject.

Step 3: Keep it Simple For kids, it’s essential to keep the hypothesis straightforward and concise. Use language that is easy to understand and relatable to their age.

Step 4: Make a Predictable Statement Help your child frame their hypothesis as an “If… then…” statement. For example, “If I water a plant every day, then it will grow taller.”

Step 5: Ensure Testability Ensure that the hypothesis can be tested using simple experiments or observations. It should be something they can prove or disprove through hands-on activities.

Step 6: Avoid Certainty Teach kids that a hypothesis is not a definitive statement of fact but rather a best guess based on what they know. It’s okay if the hypothesis turns out to be wrong; the learning process is more important.

Step 7: Review and Refine After forming the initial hypothesis, review it with your child. Discuss if it can be made simpler or clearer. Refinement aids in better understanding and testing.

Step 8: Test the Hypothesis This is the fun part! Plan an experiment or set of observations to test the hypothesis. Whether the hypothesis is proven correct or not, the experience provides a learning opportunity.

Tips for Writing Hypothesis for Kids

  • Encourage Curiosity : Always encourage your child to ask questions about the world around them. It’s the first step to formulating a hypothesis.
  • Use Familiar Language : Use words that the child understands and can relate to. Avoid jargon or technical terms.
  • Make it Fun : Turn the process of forming a hypothesis into a game or a storytelling session. This will keep kids engaged.
  • Use Visual Aids : Kids often respond well to visuals. Drawing or using props can help in understanding and formulating the hypothesis.
  • Stay Open-minded : It’s essential to teach kids that it’s okay if their hypothesis is wrong. The process of discovery and learning is what’s crucial.
  • Practice Regularly : The more often kids practice forming hypotheses, the better they get at it. Use everyday situations as opportunities.
  • Link to Real-life Scenarios : Relate the hypothesis to real-life situations or personal experiences. For instance, if discussing plants, you can relate it to a plant you have at home.
  • Collaborate : Sometimes, two heads are better than one. Encourage group activities where kids can discuss and come up with hypotheses together.
  • Encourage Documentation : Keeping a journal or notebook where they document their hypotheses and results can be a great learning tool.
  • Celebrate Efforts : Regardless of whether the hypothesis was correct, celebrate the effort and the learning journey. This reinforces the idea that the process is more important than the outcome.


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Hypothesis Examples

A hypothesis has classical been referred to as an educated guess. In the context of the scientific method, this description is somewhat correct. After a problem is identified, the scientist would typically conduct some research about the problem and then make a hypothesis about what will happen during his or her experiment. A better explanation of the purpose of a hypothesis is that a hypothesis is a proposed solution to a problem. Hypotheses have not yet been supported by any measurable data. In fact, we often confuse this term with the word theory in our everyday language. People say that they have theories about different situations and problems that occur in their lives but a theory implies that there has been much data to support the explanation. When we use this term we are actually referring to a hypothesis. For example, someone might say, "I have a theory about why Jane won't go out on a date with Billy." Since there is no data to support this explanation, this is actually a hypothesis. In the world of statistics and science, most hypotheses are written as "if...then" statements. For example someone performing experiments on plant growth might report this hypothesis: "If I give a plant an unlimited amount of sunlight, then the plant will grow to its largest possible size." Hypotheses cannot be proven correct from the data obtained in the experiment, instead hypotheses are either supported by the data collected or refuted by the data collected.

1. If I replace the battery in my car, then my car will get better gas mileage.

2. If I eat more vegetables, then I will lose weight faster.

3. If I add fertilizer to my garden, then my plants will grow faster.

4. If I brush my teeth every day, then I will not develop cavities.

5. If I take my vitamins every day, then I will not feel tired.

6. If 50 mL of water are added to my plants each day and they grow, then adding 100 mL of water each day will make them grow even more.

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50 Sensational 7th Grade Science Fair Projects and Classroom Activities

Mummification, oxidation, electroplating, and more!

Collage of 7th grade science projects, including Oreo mitosis models and electroplating a coin

Engage every student with these 7th grade science fair projects, whether they’re interested in biology, chemistry, physics, environmental science, or any other discipline. Plus, find interesting classroom demos, experiments, and hands-on activities to spice up your lesson plans!

To make it easier to find classroom activities or science fair ideas for 7th grade, we’ve rated all the projects by difficulty and the materials needed:


  • Easy: Low or no-prep experiments you can do pretty much anytime
  • Medium: These take a little more setup or a longer time to complete
  • Advanced: Experiments like these take a fairly big commitment of time or effort
  • Basic: Simple items you probably already have around the house
  • Medium: Items that you might not already have but are easy to get your hands on
  • Advanced: These require specialized or more expensive supplies to complete

Biology and Ecology Science Fair Ideas for 7th Grade

Chemistry science fair ideas for 7th grade, physics and engineering science fair ideas for 7th grade, 7th grade science classroom demos, experiments, and hands-on activities.

Want to learn more about animals or human behavior, the environment around you, or other life science topics? Try these 7th grade science fair projects.

Learn whether color affects memory

A tablet and smartphone with screens showing text

Difficulty: Easy / Materials: Medium

Can certain colors improve your memory? This experiment explores that idea using different text, background colors, and blue light settings on devices.

Learn more: Colors and Memory at

Explore how sugary drinks affect teeth

Four colored cups containing different liquids, with an egg in each

The calcium content of eggshells makes them a great stand-in for teeth. In this experiment, students use eggs to determine how soda and juice stain the teeth and wear down the enamel. (Bonus: Have students try different toothpaste and toothbrush combinations to see how effective they are.)

Learn more: Eggshell Experiment at Feels Like Home

Extract DNA from an onion

Difficulty: Medium / Materials: Medium

Learn how to extract DNA from an onion (most of what you need you can find at home, and you can get 95% ethanol at Amazon ). Then, turn it into an experiment by applying the theory to other fruits or vegetables to see if you can get similar results.

Stretch your mind with a flexibility experiment

Three students lying on their backs stretching one leg in the air while another student stands nearby

Difficulty: Medium / Materials: Basic

Find out how important stretching really is by comparing the flexibility of willing test subjects before and after stretch exercises. This is a great experiment for fitness fans.

Learn more: Flexibility Experiment at We Have Kids

Construct a DIY grow box

DIY plant grow box made with aluminum foil

Design a grow box using a cardboard box, foil, and a plug-in light socket . Then, use it for all kinds of plant-based science fair ideas for 7th grade students.

Learn more: DIY Grow Box at Uplifting Mayhem

Collect and control biofilm

Two plastic milk jugs sitting by a sink, covered with green film

Bacteria that accumulate on objects in the water form a substance called biofilm. In this 7th grade science fair project, students build an apparatus to collect biofilm and then experiment with ways to reduce the amount of biofilm that accumulates over time.

Learn more: Biofilm Experiment at The Homeschool Scientist

See if caffeine helps you type faster

People seek out a jolt of caffeine when they’re feeling sluggish, but does it really help them perform better? This 7th grade science fair project tasks students with answering that question using the scientific method.

Find out if all plants are phototropic

You probably already know that many plants grow toward the light. But do all of them respond in the same way? Test several types of plants to find out.

Devise a water filtration system

Bottle of powdered activated charcoal next to two jars of colored water

Plenty of homes use water filtration systems these days, but how do they really work? This chemistry experiment explores how charcoal filters impurities from drinking water.

Learn more: Water Filtration at The Homeschool Scientist

Determine whether text abbreviations are a new language

Cell phone and notebook with list of texting terms

Kids are fluent in text-speak, but does it really count as a whole new language? In this 7th grade science fair project, students research language and the history of texting, then compile a texting glossary and consider texting’s practical applications.

Learn more: Text Language at

If you’re fascinated by test tubes, beakers, and Bunsen burners, check out these interesting 7th grade science fair projects and ideas.

Design your own slime

Chances are good your students already love making and playing with slime. Turn the fun into an experiment by changing the ingredients to create slime with a variety of properties, from magnetic to glow-in-the-dark!

Copper-plate some coins

9 volt battery with electric wires running to a penny, with a cup of blue liquid

Students need just a few simple supplies to perform electroplating, but the results are always impressive. (Get copper strips  and 9V battery snap connectors with alligator clips on Amazon.) Turn this into a 7th grade science fair project by changing up the variables (does temperature matter?) or items being electroplated.

Learn more: Electroplating at KiwiCo

Swab and test for germs

Petri dishes marked floor, fridge, sink, and more, each showing some bacterial growth

Germ experiments are one of the most popular science fair ideas for 7th grade students. Swab household items, school supplies, and more to discover what’s living on the items around you.

Learn more: Germ Experiment at Angelic Scalliwags

Spherify your favorite beverage

Spherification is a hot trend in top restaurants, but 7th grade science students can easily replicate it at home with a spherification kit . This is a cool chemistry experiment, and tasty too!

Test calorie counts in packaged foods

Ever wonder how scientists determine how many calories are in your food? Try this experiment to find out!

Explore mummification

First, learn how to mummify a hot dog using baking soda as a desiccant. Then, experiment with other desiccants or items to turn this into a bona fide experiment.

Play around with oxidation

Series of paper cups containing small items like a penny, paper clip, screw, and more

Can you find a way to slow or prevent oxidation (rusting)? This is one of those 7th grade science fair ideas that’s simple in concept but has lots of practical applications.

Learn more: Oxidation Experiment at Teach Beside Me

Blow hot or cold bubbles

Frozen soap bubble on snowy branches

Blowing bubbles may sound like too much fun for a science project, but when conditions like temperature are altered, the experimental part kicks in. What conditions do you need to blow a bubble that freezes?

Learn more:  Bubble Life & Temperature at ThoughtCo.

Whip up some eggshell chalk

Pink sidewalk chalk stick sitting on a paper towel

Use the calcium in eggshells to make your own sidewalk chalk. Then, tinker with the recipe to see if you can make the chalk last longer, resist water, or other variables.

Learn more: DIY Chalk at Kidspot

See the effect of acid rain on plants

Two white tulips in glasses of water. One is healthy and one is wilted.

Difficulty: Easy / Materials: Basic

This simple project tests whether acid rain has any effect on plant life, using vinegar in place of fossil fuels. Experiment with different acid concentrations and pH levels for a more advanced version.

Learn more: Acid Rain Experiment at STEAM Powered Family

Explore the laws of motion, the science of energy, or STEM challenge engineering ideas through 7th grade science fair projects like these.

Drive a balloon-powered car

Balloon-powered car made from cardboard (Seventh Grade Science)

Engineer a balloon-powered car using basic materials from around the house (even the wheels are bottle caps!). Experiment to see how far or fast you can make the car go.

Learn more: Balloon Car at Prolab

Construct a geodesic dome

Budding engineers will love designing, building, and testing the strength of the fascinating geodesic dome. This experiment requires nothing more than newspaper and masking tape!

Design a solar oven

Pizza boxed turned into a solar oven, propped open with graham crackers, chocolate, and marshmallows inside

Students experiment with the best way to build a solar oven, exploring thermal energy, reflection, convection, and other physics concepts. They can serve up their experiment results along with their final reports!

Learn more: Solar Oven at Children’s Science Center

Lend a helping hand

This is a great individual or group 7th grade science project, as it encourages students to use and hone their design and engineering skills to make a working model of a hand. If you’ve got robotics skills, take this project to a more advanced level.

Build a Da Vinci bridge

There are plenty of bridge-building experiments out there, but this one is unique. It’s inspired by Leonardo da Vinci’s 500-year-old self-supporting wooden bridge. Build a model and test the amount of weight it can hold, or craft a full-size version to put Da Vinci’s plan into action.

Construct a water clock

Several small bowls next to a water clock made from a jar of water, styrofoam cup, wood craft stock, and jingle bell

You’ll blow your 7th grade science students’ minds when you tell them they’re going to build a clock using engineering that’s been around for thousands of years. The supplies are simple, but the results are pretty neat!

Learn more: Water Clock at STEAM Powered Family

Generate electricity

In this science fair project, kids build a generator from scratch. Turn it into an experiment by varying the materials to see if you can increase the amount of energy it produces.

Test the elasticity of balloons

Explore whether heat and cold have an effect on elasticity using balloons. Try this with other materials too to expand the project. ( Find more balloon science here! )

Freeze water in an instant

Explore the concept of nucleation (the process of chain reactions) by turning water into ice in seconds! Make this a 7th grade science fair project by trying the same process with other liquids.

Auto-feed your pet

Difficulty: Advanced / Materials: Advanced

Can you build a device that feeds your pets automatically? Even better, can you make it inexpensive and easy for others to build too? This project has real practical applications.

Use these classroom activities to teach human biology, mechanical engineering, and more physics and chemistry concepts in engaging and exciting ways.

Use Oreos to teach mitosis

Two Oreo cookies opened up and pushed together to model cell mitosis

A 7th grade science activity that doubles as a sweet treat? Your students are going to love this activity using Oreo cookies and colorful sprinkles to make cellular mitosis models.

Learn more: Oreo Mitosis at Ballin With Balling

Twist pipe cleaners to explore meiosis

Cellular meiosis model made with pipe cleaners, beads, and string

Meiosis is similar to mitosis, but it’s specific to the production of gametes. These hands-on models use basic materials like pipe cleaners and beads to make the process easier to visualize.

Learn more: Meiosis Models at Science Prof Online

Teach about “Homer-o-stasis”

Ring stand with a plastic cup and a picture of Homer Simpson, with various chemicals, colored cups, and a bin of flour

Difficulty: Medium / Materials: Advanced

This is such a fun way to teach kids about the concept of homeostasis! Get all the instructions you need at the link.

Learn more: Homer-o-stasis at The Trendy Science Teacher

Sort jelly beans to learn genetics

Jellybeans sorted into two plastic cups labeled

If you’re learning about how genetic traits are passed along from parent to child, try this jelly-bean demo. When you’re finished, you can enjoy a sweet treat!

Learn more: Jelly Bean Genetics at The Owl Teacher

Design a pinball machine

Student-created pinball machine made from cardboard box, paper cups, and other basic supplies

Give your class basic supplies like rubber bands, plastic cups, and cardboard boxes. Then challenge them to create their very own pinball machines!

Learn more: Pinball STEM Challenge at Student Savvy

Conduct a carbon cycle lab activity

Series of test tubes filled with liquid ranging from yellow to green to blue

If you’ve got access to some basic chemicals, conduct this lab that helps students see the carbon cycle in action using their own breath.

Learn more: Science Lessons That Rock

Make a tea bag float on air

Three empty teabags burning

This easy experiment is a cool way to show kids how heat affects air molecules, making hot air rise. They’ll need some supervision with the fire, so try this out on the playground for extra safety.

Learn more: Floating Tea Bags at Coffee Cups and Crayons

Learn how salt affects density

Plastic cups labeled

Explore the salinity of various bodies of water, then re-create their waters to see if you can make an egg float or sink. Experiment with other objects too.

Learn more: Saltwater Density at Uplifting Mayhem

Watch the greenhouse effect in action

Glass jar with a thermometer inside, covered with plastic wrap, next to another thermometer lying on the sidewalk

Climate change can be a contentious topic, so start by teaching kids about the greenhouse effect, which is easy to see and understand. Then, urge them to explore data collected by other scientists so they can learn to make informed decisions about topics like global warming.

Learn more: Greenhouse Effect at Teaching Science With Lynda

Blow bubbles to explore cell membranes

A student using a straw to blow a bubble inside another bubble in a pan of green liquid

Kids are never too old to enjoy bubbles, so use them to learn more about cell membranes in this fun 7th grade science activity.

Learn more: Cell Membrane Bubbles at The Trendy Science Teacher

Marvel at a density rainbow

We learn early on that oil floats on water, but where do other liquids fit in? Students find out when they conduct this colorful density experiment that has them layer different substances, making a rainbow.

Ride the wave (machine)

Series of sticks held together by duct tape, with clay on the ends of the sticks

Learning about wave action? Build this surprisingly easy wave machine for hands-on exploration.

Learn more: Wave Machine at Engaging Science Labs

Create a taxonomy system

Seventh grade science student sorting a pile of seeds and making notes in a notebook

Students can step into Linnaeus’ shoes by creating their own system of taxonomy using a handful of different dried beans. This is a fun 7th grade science project to do in groups, so students can see the differences between each group’s system.

Learn more: Taxonomy Project at Our Journey Westward

Bake an edible cell model

Cake turned into a cell model with gummi candies and labels

Sure, students could build a cell model out of clay, but cake and candy are so much more delicious! Check out the link below to see how one teacher does it.

Learn more: Edible Cell Model at Weird Unsocialized Homeschooling

Swing a glass of water

This classic science experiment teaches kids about centripetal force. Be forewarned: This could potentially make a bit of a mess, so consider taking this one outside.

Simulate natural selection with a lab activity

Students using tongs to lift marbles from a cup, with worksheets nearby

Travel to the Galápagos Islands and follow in Darwin’s footsteps as students explore finch beak adaptations in this clever natural selection lab.

Learn more: Natural Selection Lab at Teach To Serve

Participate in Project FeederWatch

Students in a classroom looking out the windows to record their bird sightings at nearby feeders

Citizen science projects bring science to life for kids! One of our favorites is Project FeederWatch, where kids put out bird feeders and then count and report on their visitors. This is a great way to build a love of birding for life.

Learn more: Classroom Resources at Project FeederWatch

Experiment with basic substances to learn about chemical change

Test tubes in a rack with bleach, hydrogen peroxide, and vinegar

If you’re introducing lab work and chemistry basics to 7th graders, this easy lab is a great way to do it. They’ll learn safety procedures and get to feel like “real” scientists as they pour, mix, swirl, and more.

Learn more: Chemical Change Lab at Super Sass and Science Class

Assemble an edible DNA model

Edible DNA model made with Twizzlers, gumdrops, and toothpicks

DNA models are always more fun when you can snack on them afterwards. Want to make this a healthier activity? Use fruits and veggies to make models instead.

Learn more: Edible DNA Model at Hess UnAcademy

Craft a food web marble maze

Marble maze with a food web theme

Combine a STEM challenge with learning about food webs in this clever project. Kids will love the hands-on aspect, and it will really help the learning stick.

Learn more: Food Web Marble Maze at Teach Savvy

Keep the STEM learning going with these 15 Items All Middle School Math Classrooms Need .

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Collage of 8th grade science fair projects, including building a better lightbulb and guiding a plant through a light maze

50 Top 8th Grade Science Fair Projects and Classroom Activities

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7th Grade Testable Science Fair Projects

Create a science fair project based on a testable hypothesis.

Science Fair Project on Soda Dissolving a Nail in Four Days

Testable projects, which test a hypothesis for results, work well for science fairs because they allow for demonstrations and not just a simple display board of information. Though curriculums vary from district to district, seventh grade science topics are often comprised of biological sciences, including organisms and cells, genetics and evolution; physical sciences, such as basic chemistry and physics; and earth and space sciences, including meteorology, earth structure and the origin of the universe. Curriculums also call for a focus on investigation and experimentation, offering great ideas from which to develop a testable science fair project.

What’s that smell? That is your science fair project. Write a hypothesis about which type of cheese will first develop mold when stored at the same temperature for the same length of time. The amount of mold may also be included within the projected experiment results. Airborne mold spores can reproduce quickly, when given the appropriate surface and substance. The higher the moisture content, the more mold is likely. Choose several types of cheese, gather an equal-sized slice of each, place them in the same container and watch daily to record the changes over a week or two. Various types of bread could be used instead of cheese.

Experiment with fizz. How long does it take for soda to lose its carbonation? Does extreme heat or extreme cold affect it? Create a hypothesis guessing how temperature affects a carbonated drink. Purchase three bottles of the same soda, checking for similar expiration dates, and open and reseal each bottle. Leave one bottle at room temperature, place one in a cold atmosphere and set the third in a warm area. Check carbonation after a week. If there are no noticeable changes, wait another week and check again. Record all findings.

Magnets are fun for everyone. Investigate how magnetic poles function and then develop an experiment showing off your new knowledge. A maglev is a train that runs on magnetic levitation, being propelled along the track by polar force. What else could run on magnetic levitation? Create and test a hypothesis on the success of using magnets to transport an object or person. Design a scale model for demonstration.


Does the wind blow more often from one direction than another? Set up a weather vane in a windy location and observe the direction at the same time each day. Record the direction once in the morning, once in the afternoon and once in the evening. For more accurate results, monitor the wind direction for a minimum of two weeks. At the end of the experimenting phase, create a chart or graph displaying from which direction the wind most often blew and suggest why that might be the case.

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About the Author

Writing since 2008, Marisa Hefflefinger's work has appeared on websites such as SuperGreenMe, Jennifer McColm and Character Odyssey. She holds a Bachelor of Science in English education and a Master of Arts in teaching literacy and language, and she is currently working on a Ph.D. in critical literacy and English education.

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The Scientific Method : 7 Steps, Worksheet, & Examples

Grade 7 science worksheets.

The seven steps of the Scientific Method are:

  • Make an Observation
  • Ask a Question
  • Conduct Research
  • Form a Hypothesis
  • Conduct Experiment
  • Analyze Data
  • Report Conclusions

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The Scientific Method – Definition

The scientific method is used in scientific inquiry by scientists to answer questions and solve problems. It involves a series of steps that help them to investigate, experiment, and draw conclusions based on evidence. The scientific method is not just for scientists, anyone can use it in their everyday lives to solve problems and answer questions.

Steps of the Scientific Method – Diagram:

hypothesis 7th grade

7 Steps of The Scientific Method – Explained with Example

Now let us understand the seven steps of the Scientific Method using the example of a potted house plant.

Step 1: Make an Observation

When you notice something interesting , you can say an Observation is Made. Scientific Observations trigger curiousity and interest to know more.

You got a potted house plant for your study table. You watered it every day, but it died.

Now you want to know more so that when you get a plant again, you can take care of it better.

Dead Plant & Live Plant

Step 2: Ask a Question

When an interesting observation is made, you wonder why what you observed happened.

In the scientific method, you decide to find out the answer to this questions through research and experiments.

Why did the plant die, even though it was watered frequently.

Step 3: Conduct Research

Now you want to understand the topic better.

Maybe this topic was researched by someone before, and the answers are available in a book, video, or scientific article. So you first look for available information on the topic for the inquiry process .

After reading and talking to experts, you learn that potted house plants could die mainly due to 2 reasons:

  • Not getting enough water
  • Getting too much water

Step 4: Form a Hypothesis

A ‘hypothesis’ is an educated guess or a possible explanation.

Once you have a hypothesis, you can then design an experiment to test it and see if your prediction is correct or not.

You know that you watered the plant very well. The soil in your pot was never dry.

So your educated guess is that the plant died due to getting too much water.  

Step 5: Plan & Conduct Experient

Conducting an experiment is the most difficult step in the Scientific Method. It is a way to test a hypothesis and gather evidence to support or disprove it. It is also a highly exciting process that students get to experience in school laboratories.

First, you have the hypothesis ready.

  • Next, you need to design the experiment. This means figuring out what materials and equipment you will need, what procedures you will follow, and how you will measure your results.
  • Then you conduct the experiment. This involves following your procedures carefully, making observations, and recording your results.
  • Independent variable – A factor that is changed during a scientific experiment
  • Dependent variable – A factor being tested or measured during an experiment
  • Controlled variable – A factor that is kept the same during a scientific experiment

Two plants - one getting watered and one does not

  • Your hypothesis: Your plant died because of too much watering
  • Design the experiment: You will get two plants and water them differently till one of them dies
  • Materials and equipment needed: Two similar potted plants, name cards written with A and B, and a notebook
  • Experiment: Water plant A like you did with your original dead house plant. Water B with half that amount.
  • Record Data: During the experiment, record the daily observations on a notebook. You can make a table with two columns for Plant A and Plant B. Note down different factors – date, volume of water given, leaf and stem strength, leaf colour
  • Independent variable – Amount of water suplied to each plant
  • Dependent variable – Colour and strenth of leaves
  • Controlled variable – Type and size of plants, pot, sunlight, soil quantity

Step 6: Analyze Data

In this stage, data collected during the experiment is anlaysed. The goal is to know whether the data proves the hypothesis or disproves it. This involves:

  • Explaining the data gathered from the experiment.
  • Observations, information and data are collected from the experiment.
  • Use of pictorial representation via charts, graphs, averages, percentages , etc.

(learn more about analyzing and representation of data from our math tutors .)

The data collected show that Plant A and B were healthy at the start of teh experiement.

It shows that Plant A, which received more water, started becoming unhealthy by week 2 – its leaves changed colour, its stem became weak.

Scientific Method Step 6 : Analyze Data - Example

Step 7: Report Conclusions

A report is created at the end of the experiement. It will have data, conclusions, and diagrams. It is presented to an authority on the topic for review

The report should say:

  • Is the data and mesaurement correct? What are the possible sources of error?
  • Does the data (answer) support the hypothesis? Why or why not?

If the data does not prove or disprove the hypothesis, a new experiemnt needs to be designed and conducted. Sometimes, new factors of the same problem can be researched and studied

Dead Plant & Live Plant


Plant A, which received the same water as the original potted plant, died. Plant B, which received less water than Plant A, survived.

This supports the hypothesis that the original potted plant died due to over-watering.

The experiment is successfully concluded 

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Practical Applications of the Scientific Method

Here are some practical uses of the scientific method:

Solving problems: Scientists use scientific method to systematically solve problems in the world around us. For example, if a scientist wants to find a way to clean up pollution in a river, they might use the scientific method to design experiments and test different solutions until they find one that works.

(Now we know how scientific method helps to solve problems around us. Also learn how math tutoring helps in solving math problems)

Exploring the unknown: Scientists also use the scientific method to explore and discover new things. For example, if a scientist wants to study a new type of plant, they might use the scientific method to observe and collect data about the plant’s growth and behavior, and then use that data to draw conclusions about the plant’s characteristics.

Improving technology: The scientific method is also used to develop and improve technology. For example, if a scientist wants to develop a new type of solar panel, they might use the scientific method to experiment with different materials and designs until they find one that produces the most energy.

Understanding natural phenomena: The scientific method is used to better understand the natural world around us. For example, if a scientist wants to understand why hurricanes form, they might use the scientific method to collect data and test different theories until they find one that explains the phenomenon.

Overall, the scientific method is a powerful tool that helps scientists to ask questions, gather evidence, and draw conclusions based on facts and evidence. It helps us to better understand the world around us and solve complex problems that affect our daily lives.

Scientific Method Example

The Steps of the Scientific Method are used as an ongoing process to make new discoveries. Thomas Edison’s team tested 6000+ materials before identifying one that can be used to make cheap long lasting light bulbs.

Thomas Alva Edison with light bulb invented using the scientific method

The team repeated the scientific method 6000+ times with different materials for this invention. Scientists still use this method today to make new discoveries and inventions!


Practice Problems

1. What are Independent Variables?

2. What are Dependent Variables?

3. What are controlled variables?

Put your knowledge to the test with our challenging  Science Worksheets ! 

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Frequently Asked Questions

What is the scientific method.

The Scientific Method is a 7-step observation and evidence based method to understand the world and invent new things. The seven steps of the Scientific Method are:

What is 'forming a question'?

Based on your observations, develop a problem statement that can be solved by the process of experimenting. Usually a “How’ or “Why” question?

How to test your hypothesis?

Hypothesis is tested using scientific experiments. A set of repetitive methods is developed to conduct the experiment. The main aim is to test our hypothesis by collecting the facts and data. Includes variables – a measuring quantity that is used or changed during the experiment.

What are the types of variables used in the experiment?

Independent variable and dependent variable.

How will you analyze data?

Observations, information and data are collected from the experiment. Organize the data and show with the calculations. Explain the data gathered from the experiment. Use of pictorial representation via charts, graphs, averages, and percentages

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7th Grade Science Fair Projects

Age-Appropriate Ideas That Are Fascinating and Fun!

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  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College

Seventh grade and middle school, in general, are a big time for science fairs because it's a wonderful educational level for students to come up with ideas to explore using the scientific method and ways to investigate their questions. Parents and teachers still provide direction, especially helping students devise manageable experiments and appropriate work technology to present their results. However, the actual experiment should be done by the 7th grader. The student should record data and analyze it to determine whether or not the hypothesis is supported. Here are some ideas appropriate for the 7th-grade level.

7th Grade Science Project Ideas and Questions

  • Use a prism to show the spectrum of visible light on a sheet of paper. Mark the endpoints, which is how far into infrared and ultraviolet you can see. Compare your visual range with that of other family members or other students. Is there a difference in range between genders? Do family members have a similar range? See if you can draw any conclusions ​using the scientific method .
  • Composting is a great way to reduce waste and recycle nutrients, yet some household products and foods are contaminated with heavy metals and organic chemicals. Devise a test to measure one of these chemicals and compare the concentration in compost versus that in the ordinary soil in your yard.
  • Houseplants can absorb and detoxify indoor pollution. Do research to identify which houseplants are best at cleaning the air in a home, office, or classroom. Now, take the project to the next level and determine which plants are most practical, affordable, and useful. Make a chart of the chemicals the plants clean, whether the plants are toxic to children and pets, whether they can live in low-light conditions or require bright light or special care, how much the plants cost, and whether they are readily available.
  • Which brand of ibuprofen (or the student could test another type of pain reliever) dissolves the most quickly?
  • Does the pH of juice change over time?
  • Insects can sense light and dark. Can they still see light if it's only red or blue, etc.?
  • How well does a football helmet really protect against impact? You could use a skating helmet or any other protective gear, depending on what you have available.
  • How does the concentration of chlorine in water affect the rate or percentage of seed germination?
  • What is the effect of watering schedules on the germination (or growth rate) of seeds from a certain plant?
  • How does the presence of a given medication in water affect the survivability of Daphnia?
  • Does the presence of de-icer salt affect the movement behavior of earthworms?
  • Does the bounciness of a golf ball relate to its ability to be hit long-distance?
  • Does the species of wood affect the rate at which it burns? Its heat output?
  • Does the mass of a baseball bat relate to the distance the baseball travels?
  • Is the paper towel brand that absorbs the most water the same as the brand that absorbs the most oil?
  • Examples of Independent and Dependent Variables
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Year 7 Hypotheses and Variables

7th - 12th grade, other sciences.

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45 questions

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  • 1. Multiple Choice Edit 30 seconds 1 pt Every hypothesis begins with what word? Does If Which Then

Does the brand of shoes affect the jumping height?

Which hypothesis is incorrect?

Does the amount of water affect the plant's height?

Which hypothesis is correct?

How does a hypothesis begin?

After writing procedures

After making observations and doing research on the topic of interest

After buying materials for an experiment

After communicating your results

A hypothesis is

a random guess

a testable explanation that answers a question

an experiment

A prediction

Scientists base their hypothesis only on their observations

  • 7. Multiple Choice Edit 1 minute 1 pt A hypothesis is based on observations and research True False
  • 8. Multiple Choice Edit 2 minutes 1 pt Complete the hypothesis: If I eat too much.... then I will get an upset stomach I will get an upset stomach it's bad for me nothing will happen
  • 9. Multiple Choice Edit 2 minutes 1 pt What two words does every hypothesis need to have? if and because because and then If and then first and then
  • 10. Multiple Choice Edit 2 minutes 1 pt ________________, then I will be clean. I will take a shower If I take a shower Because I take a shower Since I took a shower
  • 11. Multiple Choice Edit 2 minutes 1 pt If I touch a skunk, _________________ it will spray me I will smell for days then I will smell for days I will get sprayed on
  • 12. Multiple Choice Edit 2 minutes 1 pt If I do my schoolwork, ___________ I will get good grades then I will get good grades my grades will go up because I did my work
  • 13. Multiple Choice Edit 2 minutes 1 pt _____________________, then she will give me medicine to feel better. The doctor will give me a check up Then I see my doctor when I am sick I will see a doctor If I see my doctor when I am sick,

Ralph is concerned about the number of ants in his kitchen. He wonders if cleaning the kitchen once a day instead of once a month would fix the problem.

What is the independent variable?

How often the kitchen is cleaned.

The number of ants in the kitchen.

Ralph's concern.

Cleaning the kitchen.

Ralph is concerned about the number of ants in his kitchen. He wonders if cleaning the kitchen more than once a month would fix the problem.

What is the dependent variable?

The amount of ants in the kitchen.

What will the result be compared with?

Cleaning the kitchen versus not cleaning the kitchen.

The amount of ants in the field before a rainstorm versus after a rainstorm.

The amount of ants in the kitchen before it was cleaned more often, compared to the amount of ants after the kitchen is cleaned more often.

How clean the ants are before the kitchen is cleaned versus how clean the ants are after the kitchen is cleaned.

  • 17. Multiple Choice Edit 30 seconds 1 pt Ralph is concerned about the number of ants in his kitchen. He wonders if cleaning the kitchen more than once a month would fix the problem. What will be measured in the experiment? Ralph's concern. How often the kitchen is used. How clean the kitchen is. The number of ants
  • 18. Multiple Choice Edit 30 seconds 1 pt Ralph is concerned about the number of ants in his kitchen. He wonders if cleaning the kitchen more than once a month would fix the problem. What is the best hypothesis for this situation? If the kitchen is cleaned once a week instead of once a month, then the number of ants will be fewer than if the kitchen is cleaned once a month.  If the kitchen is cleaned, then will the number of ants go down? The filthiness of the kitchen is causing the ant infestation. If the kitchen is cleaned, then the number of ants will decrease.

The independent variable is plotted on the "X" axis

  • 20. Multiple Choice Edit 30 seconds 1 pt The Responding Variable is Plotted on the "Y" axis. True False

The dependent variable is plotted on the "X" axis

  • 22. Multiple Choice Edit 30 seconds 1 pt The manipulated Variable is plotted on the "Y" axis True  False
  • 23. Multiple Choice Edit 30 seconds 1 pt A controlled Variable is a variable that does change over the course of the experiment true false

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music.

In this investigation, the independent variable is ...

The type of plant

The amount of sunlight

The type of music

The type of liquid

In this investigation, what is the dependent variable?

Type of plant

Water, apple juice, milk

Plant growth

  • 26. Multiple Choice Edit 45 seconds 1 pt A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____. Diameter of the ball Force acting on the ball Height that the ball bounces Height from which the ball is dropped

Mr. Coumbe set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

Distance traveled by the ball

Height of the ramp

Mass of the ball

Mr. Coumbe set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

Mr. Coumbe set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the controlled variable?

  • 30. Multiple Choice Edit 1 minute 1 pt Scientific Question:  Does playing video games improve reaction time? What is the independent variable? playing video games reaction time type of video game
  • 31. Multiple Choice Edit 1 minute 1 pt Scientific Question:  Does playing video games improve reaction time? What is the dependent variable? playing video games reaction time type of video game
  • 32. Multiple Choice Edit 30 seconds 1 pt the variable that is changed by the scientist at the beginning of the experiment independent variable dependent variable control variable
  • 33. Multiple Choice Edit 30 seconds 1 pt the variable that is observed at the end of the experiment independent variable dependent variable control variable
  • 34. Multiple Choice Edit 45 seconds 1 pt There are two types of data. Which type of data involves numbers that are obtained by counting or measuring? quantitative qualitative
  • 35. Multiple Choice Edit 30 seconds 1 pt There are two types of data. Which type of data involves descriptions that cannot be counted or measured? qualitative quantitative
  • 36. Multiple Choice Edit 1 minute 1 pt The summary at the end of an experiment that explains the results.  conclusion procedures materials responding variable
  • 37. Multiple Choice Edit 30 seconds 1 pt In a controlled experiment, how many variables can be worked with at a time?  one none two or more how ever many makes sense.
  • 39. Multiple Choice Edit 1 minute 1 pt  In a controlled experiment, the variable that is changed to test the hypothesis is called the – Controlled Variable Responsive Variable Dependent Variable Independent Variable
  • 40. Multiple Choice Edit 30 seconds 1 pt The measurable factor in an experiment is known as the:  Control Independent Variable Constant Dependent Variable
  • 41. Multiple Choice Edit 2 minutes 1 pt When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer? Dependent Independent Control Compound

Mrs. Goodwyn wants to see if studying time affects test scores...She gives all 6 classes the same assignment but assigns different study times. What is the controlled variable?

Study Times

Test Scores

Same Assignment

  • 43. Multiple Choice Edit 5 minutes 1 pt Which would be a qualitative observation? The color of milk The number of eggs used The temperature at which the egg boiled The time it took the egg to cook
  • 44. Multiple Choice Edit 5 minutes 1 pt Does the temperature of water affect the time it takes a sugar cube to dissolve? IV: Type of water DV: Dissolving rate IV: Temperature of water DV: type of sugar cube IV: Temperature of Water DV: Dissolving Rate IV: Time DV: Number of sugar
  • 45. Multiple Choice Edit 3 minutes 1 pt In an experiment to determine what type of acid is the MOST corrosive (destructive) which of these would NEED to be a controlled variable? The acids used The material the acid is poured on The size of the hole created by the acid

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  1. Hypothesis Breakdown

    hypothesis 7th grade

  2. How to Write a Strong Hypothesis in 6 Simple Steps

    hypothesis 7th grade

  3. 5 Steps of Hypothesis Testing with Examples

    hypothesis 7th grade

  4. Hypothesis Writing: 7th Grade

    hypothesis 7th grade

  5. Hypothesis Lesson Plan for 7th

    hypothesis 7th grade


    hypothesis 7th grade



  2. Group 5 Performance Task: Hypothesis Testing

  3. Group 5 Performance Task: Hypothesis Testing

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  6. 1 Minute SPSS Tutorial || Independent Sample T test #spsstutorial #dataanalysis


  1. Writing a Hypothesis for Your Science Fair Project

    What is a hypothesis and how do I use it in my science fair project. Defining hypothesis and providing examples.

  2. Hypothesis Lesson for Kids: Definition & Examples

    Learn about a hypothesis in science and what it means. Discover how to create a hypothesis as a step in the scientific method and how to test a...

  3. How to Write a Hypothesis: Lesson for Kids

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  4. PDF Scientific Method Worksheet

    Making an __________________ observation Forming a hypothesis is the first step of the scientific method. __________________ true A scientific law is different from a scientific theory because it __________________ true In order for a hypothesis to be testable, scientists need to be able

  5. The Scientific Method Lesson Plan: Developing Hypotheses

    In this lesson plan, students will use BrainPOP resources to learn about the scientific method and developing hypotheses.

  6. Sample Variables & Hypothesis

    Information to help you develop a good question for your science fair project. Includes a list of questions to avoid and a self evaluation to help you determine if your question will make a good science fair project.

  7. PDF Identifying Variables and Writing a Hypothesis

    For each testable question, underline the independent variable, circle the dependent variable, and list 3 constant/control variables. Then, write a hypothesis or prediction.

  8. Hypothesis ( Read )

    Hypothesis Although this cartoon pokes fun at scientific hypotheses, the concept of hypothesis is one of the most important in science. Scientific investigations discover evidence that helps science advance, and the purpose of scientific investigations generally is to test hypotheses. Finding evidence to support or disprove hypotheses is how science advances.

  9. How to Write a Strong Hypothesis

    A hypothesis is a statement that can be tested by scientific research. If you want to test a relationship between two or more variables, you need to write hypotheses before you start your experiment or data collection.

  10. What Is a Hypothesis?

    At the middle school level, students develop an understanding of what a hypothesis is and when one is used. The notion of a testable hypothesis through experimentation that involves variables is introduced and practiced at this grade level. However, there is a danger that students will think every investigation must include a hypothesis.

  11. Hypothesis For Kids

    Hypothesis For Kids Crafting a hypothesis isn't just for scientists in white lab coats; even young budding researchers can join in the fun! When kids learn to frame their curious wonders as hypothesis statements, they pave the way for exciting discoveries. Our guide breaks down the world of hypothesis writing into kid-friendly chunks, complete with relatable thesis statement examples and ...

  12. Hypothesis Examples

    A hypothesis has classical been referred to as an educated guess. In the context of the scientific method, this description is somewhat correct. After a problem is identified, the scientist would typically conduct some research about the problem and then make a hypothesis about what will happen during his or her experiment. A better explanation of the purpose of a hypothesis is that a ...

  13. What is a hypothesis?

    The video is part of the iBook for Year 7 and 8 Working Scientifically at Christ Church Grammar School. It briefly describes what a hypothesis is and how to write one for an investigation.

  14. 50 Best 7th Grade Science Fair Projects and Classroom Activities

    Find 7th grade science fair projects in every subject, plus classroom demos, experiments, and other hands-on activities to try.

  15. 7th Grade Testable Science Fair Projects

    7th Grade Testable Science Fair Projects. Testable projects, which test a hypothesis for results, work well for science fairs because they allow for demonstrations and not just a simple display board of information. Though curriculums vary from district to district, seventh grade science topics are often comprised of biological sciences ...

  16. Seventh Grade Science Projects (702 results)

    Science Buddies' seventh grade science projects are the perfect way for seventh grade students to have fun exploring science, technology, engineering, and math (STEM). Our seventh grade projects are written and tested by scientists and are specifically created for use by students in the seventh grade. Students can choose to follow the science ...

  17. The Scientific Method : 7 Steps, Worksheet, & Examples

    Download Free Printable 7th Grade Science Worksheet on Scientific Method. Practice Free Sample Questions on Scientific Method with Answer Key.

  18. 7th Grade Science Fair Projects

    Find an idea for a 7th grade science fair project or a science project targeted at the intermediate middle school level.

  19. Seventh grade Lesson Questions, Hypotheses, Variables & Controls...Oh My!

    20 minutes. Once the Do Now is turned in, I pass out the hypothesis, variables and controls worksheet and present the Hypothesis and Variables slideshow. The slideshow presents the concepts of testable questions, hypotheses, variables and controls, which are the basis of students being able to plan and carry out investigations (NGSS Practice 3).

  20. Seventh Grade (Grade 7) Scientific Method Questions

    Seventh Grade (Grade 7) Scientific Method questions for your custom printable tests and worksheets. In a hurry? Browse our pre-made printable worksheets library with a variety of activities and quizzes for all K-12 levels.

  21. Seventh Grade Science Experiments

    Our seventh grade projects are written and tested by scientists and are specifically created for use by students in the seventh grade. Students can choose to follow the science experiment as written or put their own spin on the project. For a personalized list of science projects, seventh graders can use the Science Buddies Topic Selection Wizard .

  22. Year 7 Hypotheses and Variables

    Year 7 Hypotheses and Variables quiz for 7th grade students. Find other quizzes for Other Sciences and more on Quizizz for free!