Kids learn important plant and animal cell vocabulary as they plug the words into their correct spots and complete the puzzle.

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

Learn about the plants and animals that make deciduous forests their home, then complete the crossword puzzle.

Children learn about the food cycle in a rain forest as they color in a scene of snakes, butterflies, leopards, and other forest-dwelling creatures.

Get in tune with nature, and read a bit about an endangered species of animal, the Black-footed Ferret. Your child can color an illustration as he reads.

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.

A useful overview of terrestrial biomes, including a climate key.

For your budding environmentalist, here is an information sheet on a well-known endangered species, the Komodo dragon!

Introduce your student to an endangered species, Przewalski's horse, with this information sheet. They can color the illustration as they read.

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

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

Roses are red, violets are blue, I know the parts of a flower, how about you? Learn about flower anatomy with this worksheet.

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

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.