Which comes first, genus or phylum? To complete this life science crossword, kids need to put the 9 levels of biological classification in the correct order.

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Does your learner ever wonder what makes the Earth dark at night and bright during the day?

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

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.

Discover the details of desert plant life in this informative worksheet!

Introduce children to photosynthesis with this fill-in-the-blanks life sciences worksheet!

Expand your sea creature vocabulary with this Life in the Reef worksheet!

This packet of worksheets introduces children to food webs, an important life science concept.

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!

Fourth and fifth graders will cut out and assemble a human skeleton from paper in this engaging life sciences printable.

If you were a mad scientist, what modern-day version of Frankenstein's monster would you create?

Connect forms of energy to real-life scenarios in this third- and fourth-grade worksheet!

These worksheets help kids understand food webs, an important part of the life science curriculum in fourth grade.

The food chain is an important life science concept for fouth graders. This game makes it fun to learn!

If your child is studying life science, introduce her to all the strange animal pairs that work together in the wild.

Get to know the residents of the reef with this coral reef-themed crossword, perfect for expanding life science knowledge and working on vocabulary, too!

This is the story of our solar system. Learn about the life of Nicolaus Copurnicas and his great discovery. Learn more by answering the question at the bottom.

There are a lot of structures that make up a new plant, called a seedling. Your child will learn what they're called with this life science word search.

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

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!

Learn more about two kinds of aquatic biomesÃfreshwater and saltwater biomesÃand how you can tell them apart.

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.

Children will learn important facts about food chains in these worksheets.

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

Find out more about what REALLY dwells in swamp ecosystems with this worksheet all about swamps.

Learn a bit about meteors, asteroids and comets as they travel across the night sky. Can your child round out the page by adding color to these orbiting rocks?

Dive deep into your body's circulatory system with this worksheet on blood and what it's made of.

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.

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.