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.

Children learn why the light from the sun seems white to us, why we see objects in color, and why the sky is blue in this beautiful and fascinating worksheet.

Read about Yellowstone's red foxes, some of the most cunning and smart animals around.

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

Young inventors will have a blast with this worksheet on compound machines! Use three of the six machines together to make work easier.

Read about Alexander Graham Bell, the man who made it possible for us to stay connected all day long, in this biography that comes with a science experiment.

What is the Earth made of? Find out everything that goes on just below the surface in this science reading worksheet.

Help your budding geologist learn about these common landforms in this worksheet on peninsulas and capes.

For kids learning geography or earth science, this is the perfect review sheet for drilling students on common geography terms and phrases.

Did you know wolves are the largest members of the dog family? This fun worksheet is jam-packed with fun facts about the wolf!

Whether you say buffalo or bison, it is still the largest land mammal in North America. Discover a bit more about this majestic animal.

Look up into the night sky, and you may see three prominent stars side by side. This is Orion's belt, one of the most well known constellations!

Our ecosystems need a protector; is your third grader up to the challenge? Identify harmful pollutants in a science worksheet that doubles as a coloring page.

Learn about the California tiger salamander, which uses its toxic, bad smell as a defense.

Did you know an elephant can eat 300 pounds of food in one day? This fun worksheet is jam-packed with fun facts, a word search and trivia, all about elephants!

Take a quick lesson in the otters that inhabit Yellowstone National Park and take an even quicker quiz.

Read about the small population of huge moose in Yellowstone National Park.

Did you know chinchillas were almost extinct? This fun worksheet is jam-packed with fun facts about the fuzzy chinchilla!

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

Learn all about rollie pollies, a small but unique creature that always fascinates little kids. There's even a bit of rollie pollie match to boot.

If you were born in August or September, you may be familiar with Virgo, the zodiac sign. But did you know this character was originally a constellation?