Learn all about your body's most important muscle: your heart! This simple diagram is a great way to introduce your little biologist to his heart.

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.

Did you know that air has substance too? Learn about air resistance, also known as drag. Air resistance affects the movement of all the things on our planet!

Learn a bit about meteors, asteroids and comets as they travel across the night sky. Can your child round out the page by adding color to these orbiting rocks?

You can find rocks almost anywhere, but there's a lot more to rocks than meets the eye. Check out this science worksheet to learn all about rock formations.

Do you know how tornadoes form?This science worksheet diagrams what is known about what causes tornadoes to form.

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

Did you know an elephant can eat 300 pounds of food in one day? This fun worksheet is jam-packed with fun facts, a word search and trivia, all about elephants!

We all know the famous equation E = MC^2. But what does it mean? Learn a bit more about Einstein's famous energy equation with this physical science worksheet.

Did you know you're 1,000 times more likely to drown than you are to be bitten by a shark? This fun worksheet is jam-packed with fun facts about the shark!

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

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.

Explore one of the great mysteries of the universe with this space science worksheet on black holes.

Don't let school year learning slip away this summer: use this chemistry worksheet to practice identifying elements.

Discover the details of desert plant life in this informative worksheet!

How does our hearing work? Give your child a great guide to the anatomy of our ears with this anatomy worksheet.

Discover how cover crops enrich soil and support healthy crop growth with this research-based worksheet for fourth and fifth graders!

Review energy terminology with this fun fourth-grade crossword puzzle!

Help third and fourth graders become rock stars with this informative geology worksheet!

Learners will discover what heat waves are, and how they are connected to global warming, in this two-page earth sciences worksheet.

Help your child get to know his elementary elements with this handy worksheet on copper.

This printable features the planet closest to the sun. Learn Mercury facts and further your knowledge of outer space by discovering new things.

Discover how water flows in this informative environmental science worksheet!

Warm up your scientific thinking with this colorful worksheet!

Discover Earth’s four major systems, or spheres, in this engaging fifth-grade worksheet!

Help your child get to know the most elementary of the elements with this handy worksheet on silver.

Meet the red wolf, an endangered species of animal that was once very common, but in the past 50 year nearly became extinct!

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

How does our sense of taste function? Introduce your child to the anatomy of our tongue with this diagram and info sheet.