Are you aware of how many endangered species there are in the world? Use this trivia sheet to test your knowledge of some beautiful but endangered animals.

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

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

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.

This is not your average coloring page. Using only the three primary colors, mix your paints together to form as many colors as possible.

Alfred Nobel, though he held over 300 patents in his lifetime, is most famous for inventing dynamite.

Learn about the science behind one of nature's most awesome spectacles: monsoons.

What's in the ground beneath our feet? Explore the science of soil with your child using this handy printable!

Mammals come in all shapes and sizes - as big as a human or as small as a mouse! Learn about the life cycle of a mouse with this cut and paste activity.

Aspiring astronomers, get ready for a stellar coloring page all about the moon! Your child can read some fun facts as he colors.

The horned lizard has a scary exterior but a gentle personality. Your little student can learn about this North American lizard with this worksheet.

Use this fun frog worksheet to practice place value and expanding numbers.

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.

Check out the alligator gar's huge jaw, and color it in!

Learn about the "dwarf planet" in our solar neighborhood. There are more Pluto facts to learn, if you figure out the answer to the question on the page.

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

We all know the famous equation E = MC^2. But what does it mean? Learn a bit more about Einstein's famous energy equation with this physical science worksheet.

This experiment requires only lemon juice, salt, sugar and grapefruit. Your budding scientist can get a great introduction to science by testing her own tongue!

A fun challenge for kids, this Earth Day crossword puzzle is a great way to review facts about the Earth and get a reminder on how to live green.

Introduce your student to an endangered species, Przewalski's horse, with this information sheet. They can color the illustration as they read.

Have your little chemist think about the properties, or characteristics, of metals. What makes them different than non-metals?

Read the definitions of soil, sand and dirt then write where you can find each type below the pictures. Nurture your budding geologist!

All of these products are made from plants, or they can be! Practice using a Venn diagram, researching and classifying items with your kids.

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.

Learn facts about Mars, the great red planet in the night sky. There is more find out about space by answering the question at the bottom of the worksheet.

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

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

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

Quiz your kid on the names of bones in his spine with this colorful worksheet.

This is the story of our solar system. Learn about the life of Nicolaus Copurnicas and his great discovery. Learn more by answering the question at the bottom.