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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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It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.
Second Grade
Psychology and Sociology
Can a horse lead itself to the carrot?  Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.
Second Grade
Medium
Various fabrics retain heat differently. The objective of this science fair project is to determine which kinds of fabrics most effectively retain heat.
Elementary School
Fifth Grade
This science fair project idea builds models of various types of bridges and then  determines which bridge design is the strongest.
Fifth Grade
Hard

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