Do you ever see shapes in the stars at night? In ancient times, people named these shapes, and now we know them today as constellations!

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

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

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

What happens to water as it travels through mushy, smushy wetlands and swamps? Find out all about the water cycle and fill in scientific terms in the swamp.

Ever wonder why zebras have so many stripes? Find out with this fun worksheet all about the zebra!

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

Learn a little bit about green tree frogs (like that they sleep on the underside of leaves!) and then color in this scene of them at the zoo.

Help kids understand the size and scope of billions of years with this helpful reference worksheet.

One of the most famous and easy to spot constellations is the Big Dipper! Formally known as Ursa Major, this constellation was named after a bear.

Here's a fun drawing exercise that will also teach your child about a species of owl. He'll read some fun facts about the Great Horned Owl.

Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

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.

Jaguars eat deer? Wow. Alligators, too? Are you kidding? What don't they eat? There's way more to learn about these intriguing eaters in this cool worksheet.

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

Here's a quick overview of drought and flooding to spark thoughts or conversation with your kids about water.

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!

Did you know a baby kangaroo is called a joey? This fun worksheet is jam-packed with fun facts, a word search and trivia, all about the kangaroo!

Have you ever heard of a Caracara? This fun page is full of facts about this unique bird, including a word scramble and a color by number activity.

What is a plateau? What's the difference between a butte and a mesa? Look at these three land forms and learn to tell them apart with this worksheet.

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

Get to know each of the Seven Summits, then organize their heights into a graph.

There aren't many blue animals out there, but here's one that will be fun to color: the blue dart frog. Its bright color warns predators that it is poisonous.

Did you know that some caribou travel 3,000 miles in a year? This fun worksheet is jam-packed with fun facts about the caribou!

Did you know chameleons can sleep upside-down? Learn more about chameleons with this fun worksheet, jam-packed with fun facts and activities!

The next time your parents ask you to wash your hands before dinner, read this worksheet about Joseph Lister and take their advice!

Introduce your child to the inclined plane, one of the six simple machines that helps to make work easier for us!

Ever wonder what's inside a camel's hump? Find out with this fun worksheet! It's jam-packed with facts about camels.

How many machines can you find around the house? You may find them where you least expect it!

Why did the fox cross the road? To look for the chicken! This fun worksheet is jam-packed with fun facts about foxes!