Learn about pearls, which seem like normal jewelry from a factory but are actually made from the mucus of mollusks!

How does blood flow through the heart? This worksheet prompts kids to map how blood is pumped through this sophisticated organ.

Flex your mind muscles with a body science worksheet! Your child will learn the fundamentals of what makes up our muscles.

How much does your preschooler know about the parts of a flower? This colorful worksheet tests her flower knowledge!

To learn about muscles, look no further than this Inside-Out Anatomy page.

Did you know jaguars are great swimmers? Kids will learn all about rainforest animals with this fun activity page, including a word search and coloring!

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

Explore the circle of life with this informative coloring sheet! Help your student color and learn the names of each stage of a salmonâs life.

Did you know that each tree tells a story? In this worksheet, children peer inside a tree to learn about the layers in its trunk.

Shape up your knowledge of living things with this plant sorting soirÃe! Your kid will build observational skills by describing the attributes of each plant.

Did you know that baby turtles are born all alone on the beach? Learn about the life cycle of a turtle with this life science worksheet.

Children learn about the animals that inhabit Australia in this tracks-matching activity.

Use this "Basic Human Anatomy" sheet to see how blood carries nutrients through your body.

Looking for a worksheet to help your kid with his science vocabulary? This printable will help improve his knowledge of biology.

Kids need lots of things to grow up healthy and strong, and plants do, too! Can your child think of things a plant needs to grow?

Does your first grader want to know more about mammals? This worksheet gives her a chance to do some research to decide which animals fit into that category.

Every animal wears a unique type of covering. Learn the difference between fur, feathers and scales with this adorable animal worksheet!

Explore the circle of life with this informative coloring sheet! Help your student color and learn the names of each stage of a turtleâs life.

Track down some of the most famous animals of the Amazon -- and other places -- with this rainforest coloring page that doubles as a life-science lesson.

Clock, octopus, starfish, turtle: Which thing does not belong in this group? Kids completing this preschool worksheet identify the object that does not belong.

Explore the circle of life with this informative coloring sheet! Help your student color and learn the names of each stage of a jellyfishâs life.

Did you know that invertebrates don't have backbones? Find out some different types of invertebrates with the clues in this crossword puzzle.

Need to know all about the lungs? Study up with this comprehensive lung anatomy worksheet.

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.

Use the clues in this crossword puzzle to fill in the blanks with different types of snake names. Learn interesting facts about snakes as you go!

Use this glossary with the EL Support Lesson Plan: Five Senses Mystery Bags.

This Awesome Anatomy coloring page focuses on the heart and all the different parts of it.

This research, drawing, and writing worksheet is a fun introduction to informational and science writing.