Without light sources, we wouldn't have any light. Can you imagine a world without any light sources?

From glaciers to mountains to wetlands, our planet has lots of different landforms. Help your child learn all about them with this fun earth science crossword.

This reading comprehension worksheet focuses on Brazil's incredible natural resources, targeting both Earth science and language arts.

Teach your child how to respect the ecosystem with a science worksheet that doubles as a coloring page. Can they identify the sources of pollution in the scene?

Use this fossils worksheet to help a child learn about life on earth. Your child will learn about evolution and extinction, and also form a hypothesis.

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.

Are cats trying to talk to us when they purr? Discover the meaning behind the purr in this worksheet that explores the three main types of cat purrs.

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Children hone their observation skills by matching the tracks to their corresponding water animal in this worksheet.

Ancient mariners mistook the manatee for a mermaid! Your young biologist won't make the same mistake after learning about the manatee with this worksheet.

Did you know that insects like dragonflies have life cycles that are very similar to our own? Help your little scientist get to know the circle of life.

These pictures have a lot to say! The animals in this worksheet don't talkÃbut they can tell you a lot about what they're like by the way they look.

What is wind energy? Teach your students how we can use the wind to create electricity!

Jump-start your kid's excitement about kangaroos! Together, you can learn some cool kangaroo facts, like how kangaroos can jump up to 30 feet.

Searching for a worksheet that will give your kid help with his science skills? This printable will challenge his knowledge of the metric system.

Before trees grow into trees, they start out as little seeds. Can your child match the fruit and seeds with the trees (or plants) they came from?

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

Blue whale facts include that calves weigh up to three tons at birth and adults can be as heavy as 200 tons. Get other cool blue whale facts on this worksheet.

Did you know that the screw is actually one of the six simple machines? This handy machine helps to make work easier!

What has two legs and carries its baby in a pouch? Fill in this crossword puzzle and learn some fun facts about two-legged creatures!

Little space explorers, meet Mercury, the closest planet to the sun! This planetary coloring page comes with some fun facts about Mercury.

Budding inventors can get a fun review of the simple machines with this word search.

Does your learner ever wonder what makes the Earth dark at night and bright during the day?

The animal names on this third grade science and spelling worksheet are all mixed up! Kids unscramble reptile and bird names to complete the worksheet.

Understand nature's visual cues for the shifting of the seasons with this tree seasons match-up activity!

Hug a tree! It can be a home to many different animals. Can you identify the different shelters used by animals in this picture?

Just like all plants and animals, you go through different stages in life too! Help your child to see how he will change and grow throughout his life.

Little scientists can learn about a fundamental concept of physical science with this worksheet all about density!

Blast off into space with a fun planet printable. This one features Jupiter, the largest planet in our solar system.

Looking for a way to teach your kids all about the planets? This worksheet is the way to go. It features Venus, the second planet from the sun.