This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This science fair project idea experiments with spinning color wheels and optical illusions.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.