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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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Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.
Ninth Grade
Tenth Grade
Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.
Fifth Grade
Sixth Grade
Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.
Seventh Grade
Eighth Grade
Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?
Seventh Grade
Eighth Grade
Science fair project which compares the quantity of cells in the different phases of mitosis by observing the cells of an onion root tip.
Ninth Grade
Tenth Grade
This science fair project idea examines the reason boats are shaped and engineered.
Elementary School
Third Grade
Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.
Fifth Grade
Sixth Grade
Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.
Fourth Grade
Fifth Grade
Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.
Second Grade
Third Grade
Science fair project that observes hemoglobin synthesis in the small crustacean species Daphnia Magna.
Ninth Grade
Tenth Grade
Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.
Fifth Grade
Sixth Grade
Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.
Fourth Grade
Fifth Grade
Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?
Seventh Grade
Eighth Grade

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