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

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

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

Learn about bison, some of biggest creatures in Yellowstone National Park, or anywhere else for that matter.

This nonfiction passage helps kids develop reading comprehension skills, as well as learn important ecological facts.

Learn all about cells, the tiny pieces that make up our body, in this color-in diagram.

Learn more about the skin (and the science behind pimples -- ew!) in this printable life science diagram.

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

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

Learn about Yellowstone Park's lynx, the cats that put your average house cat to shame.

Learn about the life cycle of a wood frog in this second- and third-grade worksheet!

Learn more about two kinds of aquatic biomesÃfreshwater and saltwater biomesÃand how you can tell them apart.

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

Learn about the integumentary system, which is really just a fancy phrase for "skin", in this worksheet.

Do you know what the thyroid does? Learn about our body's largest gland with this human anatomy info sheet.

Learn the difference between behavioral and physical adaptations with this cut-and-paste worksheet for second and third graders!

Meet the beetle! Filling out this simple worksheet can help your 5th grader learn the anatomy of a beetle.

Color in the gold and red colors of this common grasshopper species and learn about insect orders with your child!

Learn to identify and name the parts of a seed in this two-page science worksheet and quiz!

Wolves are an animal with a bit of rough past in Yellowstone National Park. Learn all about them!

Use clues to fill in the boxes in this crossword puzzle, and learn more about freshwater fish along the way.

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

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

Learn more about a tide pool habitat with this life science worksheet for second and third graders!

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

In this animal-based life science worksheet, students will learn that animals inherit certain traits from their parents.

If your child is starting to learn human biology, give him a great study sheet with this anatomy worksheet about the pancreas.

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