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

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.

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

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

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.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

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

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

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

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

This classic children's game demonstrates how sound travels through air vs. through a solid.

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

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 classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.