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

Learners will get to know the bald eagle, the national bird of the United States and an inhabitant of Yellowstone National Park.

Children familiarize themselves with the tracks of a duck, bobcat, coyote, deer, raccoon, and black bear in this life sciences worksheet.

How do you make recycled paper? Learn all about the recycling paper process on this informative worksheet.

Learn about the plants and animals that make deciduous forests their home, then complete the crossword puzzle.

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.

Did you know that trees have more parts than just the trunk, branches and leaves? Take a look on the inside of a tree with this fill-in-the-blank diagram!

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.

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.

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.

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.

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

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.

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.

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.