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Science Fair Project Ideas

Education.com has assembled a vast collection of science fair project ideas written by science teachers, professional scientists, and educational consultants on popular science fair topics ranging from physics and chemistry to biology and even sociology. We offer free science fair ideas suitable for every grade level, be it preschool, kindergarten, elementary school, middle school, or high school. Check the boxes in the sidebar to filter your results, or use the search bar to find that perfect science fair project or experiment your child will be sure to love.

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Showing 1 to 15 of 106
Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.
Science Fair Project Ideas
Eighth Grade
What's the difference between centripetal and centrifugal force? High school students will find out by seeing both in action while conducting this experiment.
Science Fair Project Ideas
Tenth Grade
In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!
Science Fair Project Ideas
Third Grade
In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.
Science Fair Project Ideas
Fourth Grade
Little ones looking to get their hands dirty will love this series of fun plant experiments for kids that teach essential plant biology concepts such as photosynthesis, transpiration, capillary action, and tropisms in fun and hands-on ways. Little green thumbs get to do everything from literally cloning cabbage (which is actually quite easy to do, and very cool) to building their own working greenhouses. Check it out!
Science Fair Project Ideas
Chemistry
In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.
Science Fair Project Ideas
Ninth Grade
In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!
Science Fair Project Ideas
Fifth Grade
Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.
Science Fair Project Ideas
Second Grade
Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.
Science Fair Project Ideas
Fourth Grade
The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.
Science Fair Project Ideas
Fourth Grade
Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?
Science Fair Project Ideas
Ninth Grade
Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.
Science Fair Project Ideas
Fifth Grade
What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.
Science Fair Project Ideas
Fourth Grade

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