Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

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.

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 science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

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.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

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

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.

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

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

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

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

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!

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.

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

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

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

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

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

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

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

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.

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.