Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

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

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

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

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

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

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.

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

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

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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?

Try this chemistry experiment with your curious kid and get some "shocking" results!

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

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

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

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

Give your budding young observers a chance to discover simple machines at use in their own home.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

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.

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

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

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.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

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.