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.

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

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

This quick and simple preschool mirror activity will introduce your child to the science of reflection and light with a flashlight experiment and picture game.

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.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

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

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.

Teach your child how butter is created by shaking up cream the old-fashioned way.

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

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

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

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

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

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.

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

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

Teach your child about using pumps to move water in this simple and educational preschool science activity!

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

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