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

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

Learn how matter transmits sound with a simple, hands-on experiment using sand, water and air.

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.

Here's an investigative activity in which your child will discover real-world names and uses for sugar and find out how it is hidden in many different foods.

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.

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

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

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

Try this chemistry experiment with your curious kid and get some "shocking" results!

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