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.

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

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

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

Did you know people can live with just one kidney? Get a head start on human anatomy with this info sheet on kidneys.

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.

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.

Get to know one of the most unique and colorful monkeys, the red-shanked douc langur. Read about why they are an endangered species with this info-sheet.

Did you know that your tongue is one of the strongest muscles in your body? Tickle your learning taste buds with this worksheet all about your tongue.

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

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!

Discover the connections between the sun, plants, and animals in this fifth-grade worksheet all about photosynthesis!

Did you know an elephant can eat 300 pounds of food in one day? This fun worksheet is jam-packed with fun facts, a word search and trivia, all about elephants!

Ecosystems are an important part of fourth grade science. This fun printable will help your child with her knowledge of plants and animals.

Looking for a fourth grade worksheet to help your kid with science? This printable will help with your child's botany vocabulary.

Have you considered why elephants have trunks, or why polar bears have thick fur? Reflect on animal adaptations with this fourth-grade worksheet!

Fifth-grade learners will look at a diagram of a cell, then follow the instructions to label its parts by color.

Do you know the functions of the primary organs in the human body? Put your knowledge to the test with this fourth- and fifth-grade crossword!

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

Take a peek into a temperate forest ecosystem with this food web worksheet for fourth and fifth graders!

Study ecosystem changes with this drought-focused worksheet for fourth and fifth graders!

Fourth and fifth graders will cut out and assemble a human skeleton from paper in this engaging life sciences printable.

The food chain is an important life science concept for fouth graders. This game makes it fun to learn!