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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 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 CD hovercraft science project, students will construct their own DIY hovercraft.
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
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.
Environmental Issues
Science Fair Project Ideas
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
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
Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.
Earth & Space Science
Weather and Climate
Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.
Ecology
Third Grade
Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.
Geology
Fourth Grade

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