Ever wonder what makes the leaves change colors in the fall? Find out with this fascinating life science worksheet.

Find out how animals and plants change based on their environment in this worksheet!

All living things go through many changes as they grow to be adults! Help your little one understand how he will grow and change.

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

Just like all plants and animals, you go through different stages in life too! Help your child to see how he will change and grow throughout his life.

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

How do trunks, claws, and flippers help animals? Discover how animals use different parts of their body to meet their needs in this kindergarten and first-grade life science worksheet!

What does a dog eat? Kids choose the pictures that show what kind of food each animal likes to eat in this first grade life science worksheet.

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

Connect the dots from 1 to 30 to reveal Styracosaurus's mighty horns.

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

Learn more about Gallimimus, one of the fastest dinosaurs, with this cool dino dot to dot.

Match the sense to the picture in this five senses worksheet!

Is your little one into creepy crawlies? Test his bug knowledge with a fun crossword puzzle.

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!

Learn about the parasaurolophus, one of the most musically inclined dinosaurs with this dot-to-dot coloring page.

Learn about Supersaurus, one of the largest dinosaurs ever recorded, with this fun fact dot to dot printable.

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

Your budding ornithologist will love an introduction with coloring pages like this one featuring the New Hampshire state bird.

The narwhal is one unusual animal! Your child will learn about this horned sea creature through text and pictures.

Whoa, this spider is quite the spinster! He is actually one of many brand new species discovered between 2009 and 2011.

The Ohio state bird, the Cardinal, is famous for their bright red color. Can you give this one some color?

Give your child a great coloring page full of fun flower facts! This one is about the iris flower and the butterfly.

Walter's Duiker is a new species of duiker, a kind of antelope, and one of many new species discovered between 2009 and 2011.

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