Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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.

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!

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

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

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

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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!

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

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

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

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

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

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.

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

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

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

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

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.

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

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

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

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.