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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 16 to 30 of 114
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
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
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
In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.
Science Fair Project Ideas
Second 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
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
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
What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.
Science Fair Project Ideas
Third Grade
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
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
Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.
Science Fair Project Ideas
Fourth Grade
It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.
Science Fair Project Ideas
Fourth Grade
How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.
Science Fair Project Ideas
Fourth Grade
Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!
Science Fair Project Ideas
Eighth Grade

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