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.

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

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

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

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

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

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

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

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

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

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.

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

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.

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.

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.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

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

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

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

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.

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

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

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

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!

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

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.