Learn all about rivers--how they were formed, what they're made of, and what they do for us and the planet--in this reading and science worksheet.

Learn all about precipitation and the role it plays on the planet in this weather science worksheet.

Have you ever heard of the chapparal ecosystem? Learn all about this dry, Mediterranean ecosystem with this fun sheet!

Let your child explore the vocabulary associated with Earth's landforms with this colorful word search.

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

Young inventors will have a blast with this worksheet on compound machines! Use three of the six machines together to make work easier.

Discover the science behind an ages-old 4th of July tradition with this firework diagram.

Does your child have a knack for astronomy? Teach him about the constellations with this great worksheet.

Did you know fish could fly? Pisces, which is also a zodiac sign, is a constellation, named many years ago.

For all you aspiring astronauts, here is a worksheet for learning the constellations! Learn all about the constellation Gemini with this sheet.

Discover some fun facts about the sun — and bring it to life with color — with this astronomy worksheet!

Learn a bit about meteors, asteroids and comets as they travel across the night sky. Can your child round out the page by adding color to these orbiting rocks?

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

Did you know that sound is actually caused by movement? Vibrations of particles create the sound that we hear.

Learn about the many different biomes the Earth is home to in this life science worksheet, which holds the answers to some simple life science questions.

Do you ever see shapes in the stars at night? In ancient times, people named these shapes, and now we know them today as constellations!

In this word scramble, children solve a riddle by identifying which things are made of plants and which are not.

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.

Break down a word to create new ones with this fun worksheet for second through fifth graders!

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.

Search for natural resources at the beach in this engaging worksheet for second and third graders!

Search for natural resources with this fun worksheet for second and third graders!

Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

Learn about some of the most common forms of energy with this helpful one-pager for third graders!

Learn about the geological processes that create fascinating landforms like Utah’s Delicate Arch!

Discover how water flows in this informative environmental science worksheet!

Explore your world while making observations and inferences with this engaging science worksheet! 

Discover the three ways heat can move from one place to another in this middle school worksheet!