This project compares the strength of one, two, and three-ply toilet paper.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

This science fair project idea explores how length affects the weight a bridge can hold.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

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.

This science fair project idea investigates the hardness property of minerals.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!