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.

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

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.