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

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

Challenge your child's knowledge of astronomy with this space-themed worksheet, which focuses on the timing of cosmic events.

Guglielmo Marconi was a man who made waves in radio and sound. Learn about his life and work, then answer a short essay question in this science worksheet.

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.

Can you explain why your blue shirt is blue? This worksheet is full of facts about light and how it reacts with objects to give us the perception of color.

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

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

Do you measure distance in inches or seconds? When do you use miles? Answer these and more with this third-grade worksheet about the customary system of measurement! 

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