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.

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

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

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!

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

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

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 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.

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.

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.

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.

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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

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:

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

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

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

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.

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

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.

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

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

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

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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!

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

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