Did you know that an elevator is actually one of the six simple machines? Help your child understand how the pulley works.

These cute critters have gotten their tails all mixed up! Have your little one help put them all back in place.

Walter's Duiker is a new species of duiker, a kind of antelope, and one of many new species discovered between 2009 and 2011.

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.

Kids love exploring, so take your little one on a nature walk and learn about living things together with this science worksheet.

Introduce students to the first step of the engineering design process with this helpful graphic organizer! 

Did you know people can live with just one kidney? Get a head start on human anatomy with this info sheet on kidneys.

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

How was our solar system created? Read a bit about one of the most well-known theories in this worksheet about the Big Bang.

Introduce your child to a fascinating new animal, the Baird's tapir. This is just one of many endangered species around the world.

Explore this diagram of the water hyacinth with your little one. She'll be learning the parts of a flower as she colors in this delighful picture.

Ever wonder how the human body functions? Enjoy this great info sheet all about the human heart, one of our most important organs.

All living things go through many changes as they grow to be adults! Help your little one understand how he will grow and change.

Natural resources are crucial for sustaining life on the planet. Encourage your child to get to thinking about plants, one of Earth's natural resources.

Color the T Rex Leech! Named for its sharp teeth, he is one of many brand new species discovered in the past two years.

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

Our silkworm facts help your little one understand more about these special invertebrates. He'll read about their life stages and answer some questions.