Our ecosystems need a protector; is your third grader up to the challenge? Identify harmful pollutants in a science worksheet that doubles as a coloring page.

Gear up to go into the science lab with the help of this activity!

What is the purpose of a hard shell or a long neck? Discover different adaptations with this matching worksheet for second and third graders!

Connect the dots from 1 to 30 to reveal Styracosaurus's mighty horns.

Without rain, we wouldn't have any puddles to splash and stomp in. Does your third grader know why and how rain falls from the clouds?

Learn about the science behind one of nature's most awesome spectacles: monsoons.

This angelic constellation is Virgo, one of the twelve special symbols of the zodiac.

Did you know that Uranus can get as cold as -144° Fahrenheit? Learn more about the third largest planet in our solar system on this planet printable.

Earth has many different land and water features—can you recognize them? Test your knowledge with this crossword puzzle for third and fourth graders!

Read about one of Yellowstone National Park's coolest animals, the big horn sheep.

Learn more about Gallimimus, one of the fastest dinosaurs, with this cool dino dot to dot.

Match the sense to the picture in this five senses worksheet!

Is your little one into creepy crawlies? Test his bug knowledge with a fun crossword puzzle.

Sagittarius clearly isn't your average archer -- for one, he's half a man and half a horse!

Learn about Red River Hogs in this series of animals facts sheets and coloring pages in one.

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!

Dive into this astrological dot-to-dot worksheet with Pisces, one of the twelve constellations of the zodiac.

Learn the ins and outs of one of the body's most important organs: the heart!

Learn a basic concepts physical science with this fun worksheet. Your little one will decide which objects sink, and which ones float!

These "Dig It!" worksheets not only teach about life on earth, they teach the scientific method as well.

Did you know the surface of the Earth is always changing? Learn about the events that change Earth's surface with this crossword puzzle for second and third graders!

Learn about the parasaurolophus, one of the most musically inclined dinosaurs with this dot-to-dot coloring page.