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.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Help your little builder move up in the world with this recycled cardboard castle that's just the right size for a young king and his loyal stuffed subjects.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

In this design challenge, your child will make a bottle rocket using typical household items.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Learn about emulsification and bile's roles in digestion, and investigate how the digestive enzyme lipase breaks down lipids.

Be active while learning about American history with this twist on the classic running game "Capture the Flag."

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.