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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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In this CD hovercraft science project, students will construct their own DIY hovercraft.
Science Fair Project Ideas
Fourth Grade
This science fair project idea explores how water and ice can change the form of rocks.
Geology
Elementary School
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
Weather and Climate
Science Fair Project Ideas
Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.
Ecology
Third 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
The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.
Ecology
Environmental Issues
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
Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.
Astronomy
Third Grade
Learn about endothermic and exothermic reactions and energy exchange by experimenting with temperature change in chemical reactions.
Science Fair Project Ideas
Seventh Grade
Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.
Geology
Second Grade

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