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

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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

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

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

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

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.

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

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Teach your first grade scientist the difference between liquids and solids using maple syrup.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

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

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

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

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

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

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

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.

How powerful is the reaction between baking soda and vinegar? Find out here!

Engineers in training can get started with this simple wheel-and-axle construction activity.

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

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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.