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

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

Track down some of the most famous animals of the Amazon -- and other places -- with this rainforest coloring page that doubles as a life-science lesson.

This skeletal system worksheet, featuring a funny diagram of a human skeleton, is just the thing kids need to master their skeletal system vocabulary.

In this worksheet, children will learn about the intricate "waggle dance" honeybees use to communicate to each other.

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.

The food chain is an important life science concept for fouth graders. This game makes it fun to learn!

The grizzly bear once roamed across most of North America; now its habitat has shrunk to the northwest. Discover more about the grizzly with this worksheet.

Hop right into this simple worksheet to memorize grasshopper anatomy. Match the provided words to the body parts of this hip-hoppin' creature.

Test your third grader's biology knowledge with this worksheet, which challenges him to separate invertebrates from animals with a backbone.

In this introductory tree-diagramming worksheet, young naturalists will unscramble each label to reveal five parts of the tree.

Take a trip down to the deep blue sea and learn about the life cycle of a fish! Fish go through the same stages of life as many other living things.

Cut out and complete this trophic level pyramid template!

Did you know butterflies have no teeth? How do you think they eat? Check out this science worksheet to learn all about it.

What does the pancreas do? Kids will check out the diagram, read a paragraph, and put their reading comprehension skills to the test by filling in the blanks.

Download this worksheet for answers to our animal reading comprehension series.

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

These 12 dinosaur names are all mixed up, and need a dinosaur expert to help unscramble the letters.

Don't be crabby! This worksheets introduces your child to a fascinating crustacean. Fill in the anatomy of a crab using the numbers in the word bank.

Ever try to see a scorpion up close but were too scared? Get closer than ever with this scorpion anatomy worksheet. Fill in the body parts from the word bank.

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 the ins and outs of one of the body's most important organs: the heart!

Budding biologists can learn all about human digestion with this information page, complete with a diagram of the digestive system.

This Awesome Anatomy coloring page shows how blood circulates through your body.

This Louis Pasteur biography goes over his accomplishments, and includes a bacteria-based science activity at the end!

Crossword puzzles are a great way to make life science learning fun. This one's all about natural selection, and it's sure to give your child a fun challenge.

Coyotes' famous howl gave them the nickname "song dogs." This is just one of several coyote facts your child can learn from this worksheet.

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

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.

In which habitat could you find an arctic fox, a polar bear, and a snowy owl? Have your kid find tundra animals with this word search worksheet.