Have you ever wondered why manhole covers are round? It's a good thing to know -- big companies sometimes ask that question in interviews.

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

Rainbows look like swipes of brightly colored paint hanging in the sky. Have you ever wondered how they got there?

What is energy? Energy is the ability to do work! Use this colorful worksheet to teach your little scientist the basics of energy.

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.

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.

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

Educate your budding scientist about fossil fuels with this worksheet about non-renewable energy.

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

This science vocabulary activity is packed with basic science vocabulary words to help the youngest kids warm up to scientific concepts.

Children put their science vocabulary to the test with this engaging crossword puzzle!

Teach your child how we measure temperature with these printable thermometers!

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

Children learn why the light from the sun seems white to us, why we see objects in color, and why the sky is blue in this beautiful and fascinating worksheet.

Is orange juice a solid or liquid? What about a cookie? Practice classifying everyday objects in this first- and second-grade states of matter worksheet!

Analyze everyday objects and identify states of matter with this second- and third-grade science worksheet!

Learn how energy changes forms with this fourth- and fifth-grade physical science worksheet!

What do juice, water, and tea have in common? Compare and contrast matter in this engaging second-grade worksheet!

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! 

Is a feather liquid, soft, spotted, or heavy? Practice describing everyday objects, or matter, with this second-grade science worksheet!

Can melted wax turn back into solid wax? Can scrambled eggs turn back into raw eggs? Learn the answers to these questions and more with this second-grade worksheet about reversible and irreversible changes!

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

Use your powers of prediction to project the future movement of playground objects!