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.

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.

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.

Growing up is an exciting time for your little one. Introduce this fun tracking chart so he can keep track of the teeth he loses!

Get outside and take a stroll! This leaf guide will give your little one a great learning experience the next time you're out at the park.

Learn all about the liver with this anatomy sheet. Our liver is one of many organs in the digestive system expelling waste from the body.

Decide what differentiates living vs non-living things! First cut out the items on page 1, and then sort them in the chart on page 2.

So what on earth is this funky creature? He is a Louisiana Pancake Batfish, one of several brand new species discovered within the past two years.

Before we knew what the stars were, people would often tell stories about the pictures that the stars formed. This one is called Aquila, the eagle!

Expose your 1st grader to the animals of Australia in a fun way: coloring! Start with one of the cutest, most beloved animals Down Under, the koala.

Develop a green thumb with your little one as you add some colors to this budding broccoli plant, and maybe even plant a few seeds too!

All the animals in this word search share one characteristic: none of them have bones! Can your child find the boneless critters hidden in the puzzle?

Did you know new species of animals are discovered every year? Color in this little cricket, the only one of his kind who can pollinate plants!

How do the Sun and the Moon interact with the Earth, and how do all three depend on one another? Find out in this science worksheet.

Get to know one of the most unique and colorful monkeys, the red-shanked douc langur. Read about why they are an endangered species with this info-sheet.

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!

Did you know that your tongue is one of the strongest muscles in your body? Tickle your learning taste buds with this worksheet all about your tongue.

This lizard can grow to over six feet long! Color the Golden Spotted Monitor Lizard, one of several brand new species discovered between 2009 and 2011.

Get some cool facts about geckos on our reading and writing worksheet! Your little one is sure to be tickled by all the curious facts about geckos.

Did you know that one of the main ingredients of a perfect pearl is dust? Learn all about the bizarre process behind every pearl with this science worksheet.