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

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

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

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

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this fun activity, your child will create their very own solar oven to bake s'mores!