Did you know some people have little teacup pigs as pets? Learn all about these adorable animals with your child as she completes this fact-filled quiz.

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

Pigs, cows, and ducks, oh my! The clues in this animal crossword puzzle worksheet will help you remember what animals there are on a farm.

Are chickens mammals, fish, or birds? Sort animals by their traits in this informative life science worksheet!

Your child will write about his or her favorite animal. Kids will research their favorite animals online or at the library, then write down three facts.

Are cats trying to talk to us when they purr? Discover the meaning behind the purr in this worksheet that explores the three main types of cat purrs.

Unearth fossils in this explorative third-grade worksheet!

Blue whale facts include that calves weigh up to three tons at birth and adults can be as heavy as 200 tons. Get other cool blue whale facts on this worksheet.

This tree anatomy worksheet will give your little naturalist a better understanding of the parts that make up a tree.

Give your little animal lover a great coloring sheet, complete with a few fun facts about the red kangaroo!

Read about a little-talked-about bird that inhabits the wetlands of Yellowstone National Park, the sandhill crane.

Open your ears for some interesting science! Your little biologist will learn the basic parts of the ear with this diagram.

The rainforest is a vibrant, lush place teaming with life! Have your little environmentalist think of some ways to help the rainforest.

Cells are the building blocks of all living things! Help your little scientist learn the basics of a cell with this fun activity.

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.

The horned lizard has a scary exterior but a gentle personality. Your little student can learn about this North American lizard with this worksheet.

Test your little nature-lover's knowledge about our feathery friends. Can she figure out which bird fits each description?

Little biologists will use this respiratory system diagram to identify the most important parts of the human respiratory system and their functions.

All living things go through many changes as they grow to be adults! Help your little one understand how he will grow and change.

Pick up some peafowl facts on this worksheet with vibrant illustrations. Little ones will read about different types of peafowl and answer some questions.

Our silkworm facts help your little one understand more about these special invertebrates. He'll read about their life stages and answer some questions.

How can you tell how old a tree is? Look no further! This worksheet gives a basic overview of tree rings for your little scientist.

Little gardeners, get to know your plants! See the cycle of a plant from its birth to adulthood, and read a bit about photosynthesis too.

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.

The California condor has been brought back from the brink of extinction. This worksheet will help your little bird lover learn all about the condor.

Sting your little insect enthusiast with some knowledge about the insect order Hymenoptera. He'll learn a fun fact as he colors this yellowjacket.

Get outside and take a stroll! This leaf guide will give your little one a great learning experience the next time you're out at the park.