Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

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

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

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

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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.

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

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

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

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

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

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.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

Learn with makes water molecules work with this fun and easy science activity!

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!