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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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The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.
Elementary School
Botany
This science fair project idea explores the fastest average speed a human can talk.
Middle School
High School
Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.
Fourth Grade
Easy
Little ones looking to get their hands dirty will love this series of fun plant experiments for kids that teach essential plant biology concepts such as photosynthesis, transpiration, capillary action, and tropisms in fun and hands-on ways. Little green thumbs get to do everything from literally cloning cabbage (which is actually quite easy to do, and very cool) to building their own working greenhouses. Check it out!
Science Fair Project Ideas
Chemistry
Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water.
Middle School
Chemistry
This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.
Elementary School
Fifth Grade
Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.
Elementary School
Fourth Grade
Discover how and which salt melts ice the quickest.
Elementary School
Fourth Grade
Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.
Middle School
High School
This science fair project idea explores whether cats can be trained in the same way that dogs can.
Elementary School
Fifth Grade

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