Discover some of the fascinating properties of gravity by studying one of Newton's famous laws, the Law of Gravitation.

If you push your little brother, does he push back? Well, according to Newton's third law of motion, he does!

I spy with my little eye... six simple machines! Here's a fun way to help your child review the simple machines.

Did you know that an elevator is actually one of the six simple machines? Help your child understand how the pulley works.

Observe different forces at work with this kindergarten and first-grade worksheet!

Who will win the marble race in this two-page physical science worksheet?

Put your prediction proficiency to the test in this third-grade physical science worksheet!

Unscramble key vocabulary words about energy and collisions with this engaging science worksheet!

Determine which magnets have the strongest force in this third- and fourth-grade worksheet!