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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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A great science fair project on solar oven design that helps kids learn about solar power and solar heating.
Ninth Grade
Seventh Grade
This science fair project idea  determines what household items are good conductors of electricity.
Third Grade
Elementary School
Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.
Ninth Grade
Fifth Grade
Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.
Ninth Grade
Seventh Grade
Science fair project that observes hemoglobin synthesis in the small crustacean species Daphnia Magna.
Ninth Grade
Tenth Grade
Science fair project that examines the physical characteristics of soil in order to learn about soil permeability and other environmental properties.
Ninth Grade
Fifth Grade
Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?
Third Grade
Physics
This science fair project idea examines which type of insulation holds in the most heat.
Third Grade
Elementary School
In this investigation, an oil spill is simulated in a jar to observe the damage that oil spills have on the ocean and ocean life.
Third Grade
Elementary School
The purpose of this science fair project is to determine whether it takes more force to move an object over a smooth surface or a rough surface.
Third Grade
Elementary School
The purpose of this science fair project is to determine which household products are acids or bases.
Third Grade
Elementary School
How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.
Third Grade
Elementary School
This science fair experiment idea's objective is to understand the general concept of an acid and a base.
Third Grade
Elementary School

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