Introduce children to physicist Albert Einstein — and a bit of theoretical physics — with this mini biography.

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.

Take a plunge under the surface of the earth! With this worksheet as your guide, you may explore the geological processes of our planet.

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.

Dive into the deep, vast world of ocean science with this introductory sheet on the world's different oceans.

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

Budding scientists will learn about the density of salt water and perform an experiment with food coloring, salt water, and fresh water.

This worksheet teaches your student about physical change vs chemical change, matter, mass, and property. An exciting experiment reinforces the concepts.

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.

Invite your child to dream big and design their very own planet. Encourage both creativity and scientific speculation with this fun worksheet.

Together, water and photosynthesis are the source of all life on Earth! Little curious minds will enjoy discovering the ins and outs of photosynthesis.

This multi-page worksheet provides an opportunity for kids to practice both their understanding of food webs and their reading comprension skills.

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.

Go from a butterfly beginner to an expert with this worksheet, full of pretty butterflies and tons of information about where butterflies live.l

Does your budding biologist know his plant parts? Get a great review of some important plant vocabulary with this info page.

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

Are students studying electricity? Give them a break from the scientific nitty-gritty with this fun word search full of electricity terms!

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

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

Did you know that invertebrates don't have backbones? Find out some different types of invertebrates with the clues in this crossword puzzle.

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

Learn all about your body's most important muscle: your heart! This simple diagram is a great way to introduce your little biologist to his heart.

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.

Review the different body parts with a fun crossword! This is a great way for your little doctor-in-training to review the basic organs and their functions.

Get your students’ fingers flying across this paper keyboard as they apply their knowledge of typing with correct finger placement.

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

Where do flower babies come from? Find the answers in this word search about plant reproduction!

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.

Have you ever wondered what keeps the moon in orbit? Newton's first law gets a quick introduction, too, in this worksheet for kids. Check it out!