Get to know your Jurassic from your Cretaceous in this handy geologic time periods chart.

Where'd that shadow come from? Next time a scary shadow crosses your path, you'll know just what to look for.

Try this worksheet diagramming a snail anatomy. It takes a snail over two minutes to travel 12 inches, but your 5th grader can finish this worksheet in no time.

Teach your little scientist the difference between physical and chemical changes, on a molecular level.

Learn all about light refraction by simply placing your pencil in a glass of water. Warning: your pencil may not be quiet the same afterward.

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

Introduce your flashlight to mirrors. Mirrors are cool surfaces that reflect light just as well as they reflect your face.

How do you think our universe will end? With this worksheet, explore some of the common theories, and then come up with some of your own!

Learn about drag, air resistance, and Newton's laws with this cool worksheet on bobsled physics!

Play a fun game that combines the periodic table with a classic concentration game.