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

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

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

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

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

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

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!

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

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.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

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!

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

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

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

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

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.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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!

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

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!