Does your preschooler fancy herself a "bird brain"? Test her basic bird knowledge with this cute, cut-and-paste chart.

Students explore the mechanics of the respiratory system in this life science worksheet for middle school.

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!

Test your kindergartener's understanding of the parts of a dolphin with this adorable, fill-in-the-blank dolphin chart.

Explore the difference between asexual and sexual reproduction in organisms with this middle school science worksheet!

Learn all about the different jellyfish and then test your knowledge with the questions at the bottom of the page.

Discover how animal behaviors increase the probability of successful reproduction and offspring survival with this middle school science worksheet!

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

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

Your child may have heard of the Tasmanian devil from a cartoon or from a friend at school, but this worksheet will show him the real Tasmanian devil.

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!

Invite your kindergartener to fill out this elephant chart--testing her knowledge of an elephant's parts.

Explore the anatomy, physiology, and overall function of the sensory nervous system with this life science worksheet! 

Learn about the badgers that live in Yellowstone National Park.

Read about the mule deer, the most abundant deer in Yellowstone National Park.

What is the purpose of a narwhal tusk? Explore some interesting new findings about the narwhal, also known as the unicorn whale.

Jump-start your kid's excitement about kangaroos! Together, you can learn some cool kangaroo facts, like how kangaroos can jump up to 30 feet.

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!

Match up baby animals with their mommies and daddies! This memory game challenges kids to pair up babies with their grown-ups from a set of upside-down cards.

This friendly-looking penguin is cute enough to cuddle, but your kindergartener can start by filling out this chart of penguin parts.

Label the parts of a butterfly in this butterfly diagram worksheet!

Expand your sea creature vocabulary with this Life in the Reef worksheet!

Students use a food web to identify the roles of organisms in an ecosystem and draw conclusions about the cycling of matter and flow of energy.

Learn about the features of plant and animal cells in this compare-and-contrast worksheet!