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.

A useful overview of terrestrial biomes, including a climate key.

Discover the function and parts of the human skeleton with this introductory diagram.

Did you know that each tree tells a story? In this worksheet, children peer inside a tree to learn about the layers in its trunk.

Learn step by step how to create a report! Research facts about camels, complete the sentences, then use the sentences to create a report about camels.

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

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

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

For your budding environmentalist, here is an information sheet on a well-known endangered species, the Komodo dragon!

There are some parts of our brains that are still too complicated for scientists to understand! Find out the basics of the brain's functions with this fun page.

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

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

Ever wonder why zebras have so many stripes? Find out with this fun worksheet all about the zebra!

Get to know the residents of the reef with this coral reef-themed crossword, perfect for expanding life science knowledge and working on vocabulary, too!

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

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!

Animal lovers, get acquainted with a very unique species, the okapi! Read this info-sheet to learn about why this animal is endangered.

Use this life science worksheet to help middle school students boost their understanding of photosynthesis and how matter and energy cycle on Earth.

Fourth and fifth graders will cut out and assemble a human skeleton from paper in this engaging life sciences printable.

An energy pyramid is a simple way to graphically show how energy flows in an ecological community; somewhat similar to the food pyramid.

There are many endangered species all around the world. Read about the Amur leopard and why it's endangered with this information page.

Get to know one of the most unique and colorful monkeys, the red-shanked douc langur. Read about why they are an endangered species with this info-sheet.

Flex your mind muscles with a body science worksheet! Your child will learn the fundamentals of what makes up our muscles.

Why did the fox cross the road? To look for the chicken! This fun worksheet is jam-packed with fun facts about foxes!

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

Dragonflies are some of the oddest looking insects in the world, so it's appropriate that they have so many unique characteristics. Read all about them!

Teach your child about an endangered species with this information page, all about the Forest Owlet. They can color as they read some interesting facts.

Step up to the controls, Dr. Frankenstein -- the world is in need of a new creature!

Which comes first, genus or phylum? To complete this life science crossword, kids need to put the 9 levels of biological classification in the correct order.

Did you know chameleons can sleep upside-down? Learn more about chameleons with this fun worksheet, jam-packed with fun facts and activities!