Find out more about single-cell organisms with this coloring page and diagram.

This Awesome Anatomy sheet focuses on the brain, often considered the most vital of vital organs.

Cranium, noodle, melon, noggin...the human skull has been called a lot of things over the years. Here are the proper names for each part.

When we get embarrassed or anxious, and all of a sudden our cheeks get red! Why does our body do this? Find out what scientists think blushing is all about.

Kids love squids! This simple squid diagram will help your 5th grader memorize the squid anatomy.

Grandma and grandpa didn't always have gray hair. Find out about what gives our hair color and what makes our hair lose that color as we get older.

Guinea pigs are social animals that make great pets. Test your child's knowledge of these furry critters with this fun quiz.

If your kid gets excited about snakes, you need this cool worksheet. Learn a bit about carpet pythons, such as what colors they may be, and then color the picture.

Learn about Yellowstone National Park's peregrine falcons, which survived heavy pesticide use in the 1960s.

The brain is the most important organ in the human body. Get a basic grasp on the parts and functions of the brain with this anatomy info sheet.

Get the facts on the beautiful elk, an American treasure and a symbol of Yellowstone National Park.

Did you know that your tongue is one of the strongest muscles in your body? Tickle your learning taste buds with this worksheet all about your tongue.

Learn about spider tortoises, one of the world's tiniest tortoise species, with this handy worksheet. Can't go to the zoo? We bring the zoo to you!

Filling out this spider diagram will be much less scary than running into these creepy crawlers in real life. Fill in the body parts from the work bank.

Can't go to the zoo? We bring the zoo to you! Check out the fulvous whistling duck, a bird with social skills and the willingness to share each other's nests.

The silverback gorilla is a special animal. This magnificent male is part of an endangered species. Complete this sheet to learn all about this gentle giant.

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

Learn about your sense of touch with this Awesome Anatomy page on the nervous system.

Try out this simple worksheet diagramming the anatomy of a shrimp. Big words, small sea creature.

Are you aware of how many endangered species there are in the world? Use this trivia sheet to test your knowledge of some beautiful but endangered animals.

Did you know our sense of smell is also called "olfactory"? Learn about the structure and function of the nose with this human anatomy sheet.

Got a gardening guru on your hands? Give them a fun challenge with this fill-in-the-blanks quiz about the parts of a seed!

Does your child know his five senses? Give him an introduction to human anatomy with this sense of touch worksheet.

Children learn to identify the tracks of a pine marten, chipmunk, mountain lion, mountain goat, and grizzly bear in this matching worksheet.

Learn a little bit about green tree frogs (like that they sleep on the underside of leaves!) and then color in this scene of them at the zoo.

Learn about Red River Hogs in this series of animals facts sheets and coloring pages in one.

If your child is studying life science, introduce her to all the strange animal pairs that work together in the wild.

Learn about the second fastest land mammal in the Western Hemisphere, the pronghorn antelope.

Here's a creature that can be a heard a mile away: a thick-billed parrot. Learn more about these birds that are the only parrots native to the USA.

Quiz your kid on the names of bones in his spine with this colorful worksheet.