Introduce children to physicist Albert Einstein — and a bit of theoretical physics — with this mini biography.

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

Students practice classifying items as liquids or solids for a lesson on the states of matter in this fourth grade physical science worksheet.

In this worksheet, kids learn about friction by answering questions about the amount of friction in different situations.

Budding scientists will learn about the density of salt water and perform an experiment with food coloring, salt water, and fresh water.

This worksheet will quiz your child on the different fields of study in science. What's the difference between a zoologist and a geologist? Find out here!

A lot of common objects use electromagnets to work. This word search will get your child thinking about all the electrical and mechanical devices around her!

Introduce your budding scientist to chemical reactions with this simple and fun science experiment!

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.

Learn all about the science of the movies and the basic concepts behind how they work.

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Did you know that light could bounce? Set up a light obstacle course with a few mirrors and watch light bounce around your room.

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

It's a paper parachute brigade! Learn how to build your own parachute, and learn how the parachute was invented over 500 years ago.

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.