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!

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!

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.

Teach your child how butter is created by shaking up cream the old-fashioned way.

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

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

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

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.

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

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

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

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

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

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.

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.

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.

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.

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

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.

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

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

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

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

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

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

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

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

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