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

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!

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

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.

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.

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.

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.

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.

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.

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

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

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.

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!

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

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

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

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.

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.

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

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

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

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!

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.

Introduce your child to science with something they see everyday--their shadow!

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

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!

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

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.