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High School Science Fair Projects

Need a science fair project that's fun, engaging, and appropriately rigorous for a high school science fair? Education.com has assembled a rich collection of high school science fair projects and high school science fair project ideas written by our team of professional scientists, science teachers, and educational consultants. We offer free high school science experiments on every science fair topic, including physics, chemistry, biology, engineering, and even psychology. Check the boxes in the sidebar to filter your results, or use the search bar to find a winning idea for your upcoming science fair. Hundreds of good science fair projects are only a click away.

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Showing 16 to 30 of 39
Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.
High School
Botany
This science fair project idea  determines whether plants grow better in soil or in fish ponds.
High School
Botany
In this science fair project, you will determine the effects of acids and bases on red cabbage. Use Education.com for free science fair project ideas!
High School
Botany
In this science fair project you will discover which nutrients are best for plants. Use Education.com for science fair project ideas!
High School
Botany
In this science fair project, you will test the effectiveness of calcium propionate, a food preservative that inhibits mold growth in bread.
High School
Botany
Dissect a pinto bean and learn how to identify all of its parts in this science fair project!
High School
Botany
Science fair project in which you will graft branches from different fruit tree onto a root stalk.
Botany
Eighth Grade
Science fair project which determines which colors of light allow plants to produce the most chlorophyll. How are color and light related to each other?
Botany
Seventh Grade
This science fair project idea determines whether plants grow better in soil or in fish ponds.
High School
Botany

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