This colorful diagram is a handy reference guide for kids learning basic body systems.

Fact: This worksheet is about unusual animals from all over the world. Opinion: This is the best fact and opinion worksheet ever!

How much does your child know about the animal kingdom? Help her discover interesting facts with this animal crossword.

Did you know that trees have more parts than just the trunk, branches and leaves? Take a look on the inside of a tree with this fill-in-the-blank diagram!

There are many endangered species all around the world. Read about the Amur leopard and why it's endangered with this information page.

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

This worksheet tests kids' understanding of basic heredity by asking them to match parent turtles with their offspring based on similar traits.

Teach your child about an endangered species with this information page, all about the Forest Owlet. They can color as they read some interesting facts.

Find out more about single-cell organisms with this coloring page and diagram.

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.

Learn all about vision and sight with this life science diagram.

Learn about the animal practice of hibernation in this quick science worksheet.

These 12 dinosaur names are all mixed up, and need a dinosaur expert to help unscramble the letters.

Learn more about the animals in the swamp food chain, and find out how each living thing in a swamp ecosystem needs another to survive.

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

This tree anatomy worksheet will give your little naturalist a better understanding of the parts that make up a tree.

Our silkworm facts help your little one understand more about these special invertebrates. He'll read about their life stages and answer some questions.

Did you know some baby birds take 10 days to hatch, and some can take 80 days! Learn all about these cute creatures and finish your lesson off with a fun maze.

Animal lovers, get acquainted with a very unique species, the okapi! Read this info-sheet to learn about why this animal is endangered.

Does your child know his five senses? Give him an introduction to human anatomy with this sense of touch worksheet.

Step up to the controls, Dr. Frankenstein -- the world is in need of a new creature!

Learn about the California tiger salamander, which uses its toxic, bad smell as a defense.

How do you make recycled paper? Learn all about the recycling paper process on this informative 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.

This spikey Stegosaurus looks fierce, but don't worry -- he's a vegetarian! Learn all about this massive dinosaur with a fun fact sheet.

Did you know butterflies have no teeth? How do you think they eat? Check out this science worksheet to learn all about it.

Learn a bit about the Brazilian rainbow boa with this cool science worksheet.

Kids find grassland animals in this third grade science word search. Animal habitat worksheets help students learn about life forms in different environments.

Count the number of sea creatures and make a bar graph with this shark worksheet. Make an underwater word ladder with your 2nd grader, too.