This science fair project idea produces varying pitches of sound.

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

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

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

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

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

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

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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.

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.

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

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

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

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!