This nonfiction passage helps kids develop reading comprehension skills, as well as learn important ecological facts.

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

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

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.

Can your child name 10 animals that make their home in the mountains? After completing this worksheet, he'll know all about mountain habitats!

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

Next time you head outside for a hike or a camping trip, bring along this checklist of animal tracks!

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

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.

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

The next time you're on a hike, be sure to take this leaf chart to guide you in identifying different types of leaves!

The next time your parents ask you to wash your hands before dinner, read this worksheet about Joseph Lister and take their advice!

Try this worksheet diagramming a snail anatomy. It takes a snail over two minutes to travel 12 inches, but your 5th grader can finish this worksheet in no time.

Learn more about the bones in your body and just how important they are with this reading sheet and diagram, all in one.

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.

Introduce your child to a fascinating new animal, the Baird's tapir. This is just one of many endangered species around the world.

Ever wonder how the human body functions? Enjoy this great info sheet all about the human heart, one of our most important organs.

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

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.

Looking for a fun way to supplement your child's science learning? Try out a life science crossword puzzle! This one's all about ecosystems.

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?