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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 814
Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.
Life Science
Ninth Grade
This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.
Ecology
Elementary School
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Weather and Climate
Second Grade
This science fair project idea determines if family members can recognize one another using only the sense of smell.
Anatomy
Elementary School
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
In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.
Earth & Space Science
Third Grade
Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.
Botany
Fifth Grade

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