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

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.

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.

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!

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

Have fun learning about food chains in this charming science worksheet!

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

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.