Which comes first, genus or phylum? To complete this life science crossword, kids need to put the 9 levels of biological classification in the correct order.

Dig into the past with this third-grade worksheet all about fossils!

This short nonfiction text will provide students with an opportunity to become more comfortable with identifying and defining academic vocabulary words—and they'll have fun learning all about the life cycle of a chicken in the process!

What makes a reptile different from an amphibian?  Learn all about animal classifications in this worksheet for second and third graders!

In this North American animal tracks worksheet, students hone their observation skills by matching tracks to animals.

Learn how seeds move with this second- and third-grade matching activity!

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

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

Unearth fossils in this explorative third-grade worksheet!

Dip your toes into a marsh habitat in this second- and third-grade worksheet!

Dive into habitat studies with this second- and third-grade worksheet!

Decide which plants could live in a grassland with this second- and third-grade worksheet!

Determine which plants would survive in a pond with this second- and third-grade worksheet!

Explore the lush plant life of the tropical rainforest in this second- and third-grade worksheet!

Dive into a coral reef habitat with this second- and third-grade worksheet!

Analyze fossils with this engaging third-grade science worksheet!

Discover how plants survive in the desert with this third-grade habitat worksheet!

Observe the life cycle of an oriole with this second- and third-grade worksheet!

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

Stroll through the flora of a temperate deciduous forest in this third-grade worksheet!

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?

Learn about the life cycle of a wood frog in this second- and third-grade worksheet!

These worksheets help kids understand food webs, an important part of the life science curriculum in fourth grade.

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.

Uncover secrets of the past with this third-grade worksheet about fossils!

Lots of people like turtles, but how much do you really know about them? Get to know one of many types of turtles with this informational worksheet.

Decide which plants could survive in the desert with this second- and third-grade habitat worksheet!

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!

These are the largest tortoises in the world, yet they are only two inches long when they hatch! That's one of the facts you can learn from this worksheet.