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

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.

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

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

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.

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.

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!

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

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 easy aerodynamics activity is a simple way to introduce kids to the scientific method.

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

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

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

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

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

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 is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

A simple science experiment exploring the physics of water pressure that's been amazing people since Medieval times.

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