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

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

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.

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

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

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.

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.

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.

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

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.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

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 easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

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

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!

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

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.