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.

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

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

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.

This surprisingly good glue recipe comes from common kitchen items.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

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

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

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

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

This science fair project idea shows how a vibrating object transfers energy to whatever it touches.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

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

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

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

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

Try this chemistry experiment with your curious kid and get some "shocking" results!

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

This science fair project idea produces varying pitches of sound.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.