Bird-watchers will love this worksheet, featuring just a sample of the many song birds flying around Yellowstone National Park.

Introduce your flashlight to mirrors. Mirrors are cool surfaces that reflect light just as well as they reflect your face.

Constellations are not just named after animals, some of them are named after people! Learn about the constellation Sagittarius with this fun worksheet.

Coyotes' famous howl gave them the nickname "song dogs." This is just one of several coyote facts your child can learn from this worksheet.

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

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

What's your favorite animal? Kids love answering that question, and with this animal research graphic organizer, they can write all about it.

Let your child put her thinking cap on and take a moment to write about the influence people might have had on the formation of landforms.

Encourage your child to take a nature walk, using the prompts on this worksheet to write and draw their observations of plants, animals, sounds, and more.

Think toads and frogs are the same? Think again! Check out this breakdown of the differences between the two, complete with a quiz to check your new knowledge.

Celebrate the fall season with this nature sketchbook, perfect for any lover of the outdoors!

Learn all about Alexander Fleming, the man who invented penicillin and the happy accident that brought him to it.

This Earth Day quiz family and friends with this true or false questionnaire. It's all in good, informative, fun!

Life on Earth is vast and varied, from high in the sky to the bottom of the sea. Learn more about what lives on Earth with this reading and quiz worksheet.

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

Milky Way: candy bar or galaxy of 100 to 400 billion stars?

Back in ancient times, the stars were used as storytelling tools. People created characters and stories that they saw in the stars, like Leo the lion.

Where is the Earth in space? Check out this worksheet that describes where weÃand some of our neighborsÃare in our galaxy.

Encourage your little environmentalist to learn about composting! Children will boost their reading skills as they learn what compost is and how it helps the environment.

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.

Some people think alligators and crocodiles are the same, but there are some distinct differences. Check out this cool worksheet to learn what they are.

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

Discover how seeds move to new places with this cut-and-paste worksheet for second and third graders!

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

Children hone their powers of observation using this worksheet template.

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 match animals to their ecosystems in this life sciences worksheet.

Give your kid help with his science skills with this worksheet, which practices natural disaster vocabulary.

Dive into a coral reef habitat with this second- and third-grade worksheet!

These printable Valentine's Day cards are perfect for a kid who's in love with animals and science!