Find out all about the different parts of the eyes and how they work together to make vision possible.

Find out everything you need to know about lightning rods! These metal poles have quite a special relationship with lightning.

Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

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

Did you know plants make their own food? Discover how with this fill-in-the-blank worksheet for third and fourth graders!

Discover the impact of water on Earth’s landscape with this fourth-grade erosion worksheet!

How much do you know about the U.S. national bird? Learn all about the bald eagle with this fun, informative worksheet!

How much do you know about man's best friend? This fun worksheet is jam-packed with fun facts about dogs!

Go from a butterfly beginner to an expert with this worksheet, full of pretty butterflies and tons of information about where butterflies live.l

Learners will discover a simple overview of the human muscle system in this introductory worksheet.

Learn all about rivers--how they were formed, what they're made of, and what they do for us and the planet--in this reading and science worksheet.

Learn about pearls, which seem like normal jewelry from a factory but are actually made from the mucus of mollusks!

Learn the ins and outs of one of the body's most important organs: the heart!

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

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

Where do flower babies come from? Find the answers in this word search about plant reproduction!

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

How many teeth does an alligator have? Find out with this fun worksheet, dedicated to teaching you and your child all about alligators!

Do you know which animal has two humps? Your child will use clues to determine what animal name fits in the crossword puzzle with this worksheet.

Do you know the functions of the primary organs in the human body? Put your knowledge to the test with this fourth- and fifth-grade crossword!

Light can do amazing things, but nothing else brings out its crazy capabilities like the prism. Learn about the dazzling prism and make one of your own.

Young botanists test their plant know-how with this quiz.

Discover how water flows in this informative environmental science worksheet!

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

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

Learn how conductors and insulators affect the flow of electricity in this helpful fourth- and fifth-grade worksheet!

Roses are red, violets are blue, I know the parts of a flower, how about you? Learn about flower anatomy with this worksheet.

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.

Learn more about two kinds of aquatic biomesÃfreshwater and saltwater biomesÃand how you can tell them apart.