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:

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 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.

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.

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

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

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.

In this fun activity, your child will create their very own solar oven to bake s'mores!