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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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Check out this cool science fair project idea to explore the relation between onions and eyes and how to  prevent eyes from tearing while cutting an onion.
Middle School
Easy
In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.
Third Grade
Botany
Test marble and limestone to determine if acid rain is harmful enough to damage buildings and stone monuments.
Fourth Grade
Fifth Grade
Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.
Fourth Grade
Fifth Grade
This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.
Elementary School
Fifth Grade
Raise fish in different sized aquariums for 8 weeks. Document growth rate. Determine optimal volume for fish growth.
Middle School
Medium
This science experiment tests whether warm or cold water works best in making cut flowers last longer.
Elementary School
Second Grade
Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.
Elementary School
Fifth Grade
This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.
Elementary School
Fifth Grade

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