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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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This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.
Botany
Third Grade
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 cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.
Science Fair Project Ideas
Eighth Grade
In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.
Anatomy
Science Fair Project Ideas
In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.
Zoology
Anatomy
Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.
Zoology
Science Fair Project Ideas
Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.
Botany
Science Fair Project Ideas
Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!
Botany
Science Fair Project Ideas
Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!
Botany
Fourth Grade
This science fair project idea determines which method of hand cleansing is the most effective.
Life Science
Elementary School
This science fair project examines how seeds hitchhike on animals and clothing.
Botany
Elementary School
Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.
Zoology
Science Fair Project Ideas

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