Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

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

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

How powerful is the reaction between baking soda and vinegar? Find out here!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

In this project, different brands of microwave popcorn are tested and compared.

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.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

This science fair project idea investigates whether air has mass and weight.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This project investigates the affect of storage temperature on microwave popcorn.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.