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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 science fair project idea produces sounds by creating vibrations using different objects.

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

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

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

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.

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.

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

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

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

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.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

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

An home science experiment for older students that teaches about the science behind heat.

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!

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea produces varying pitches of sound.

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

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

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

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

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

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.

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

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

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.