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

What is the water cycle? We're glad you asked! Learn about this amazing natural system that's been working for billions of years.

Students flex their physical science knowledge by classifying items as solids or liquids in this fourth grade states of matter worksheet.

Give your budding chemist the facts and practice she needs for measuring with graduated cylinders.

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

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!

Are students studying electricity? Give them a break from the scientific nitty-gritty with this fun word search full of electricity terms!

A handy worksheet that breaks down the properties of metal. A good physical science review sheet to keep around for reference.

Children learn the fascinating physics behind lightning, along with a few fun facts, in this physical science worksheet.

This worksheet teaches your student about physical change vs chemical change, matter, mass, and property. An exciting experiment reinforces the concepts.

Have you ever wondered what keeps the moon in orbit? Newton's first law gets a quick introduction, too, in this worksheet for kids. Check it out!

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

Let your curious kid learn a little bit about how fireworks work in this summer science sheet.

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

Sometimes measuring liquids scientifically is tricky. Give your budding scientist some practice, by reading measurements on graduated cylinder illustrations.

Your child will learn how electricity is made and used by drawing pictures of household products that use electricity to create light, heat, and motion.

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!

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

During the Gold Rush, people weren't sure if they found gold or something else, and these easy steps would help them be sure.

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