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

If you know what each planet looks like, you'll have no trouble with this intergalactic crossword puzzle.

You can find rocks almost anywhere, but there's a lot more to rocks than meets the eye. Check out this science worksheet to learn all about rock formations.

Here's a thorough, easy-to-understand breakdown of the color wheel that includes primary, secondary and tertiary colors.

Here's a great introduction to five famous astronomers for kids. See who got the star party started with this worksheet.

Grab your trusty flashlight and get ready for a scientific treasure hunt!

Even colors have best friends. In the world of color, these best friend pairings are called complimentary colors.

Learn all about Alexander Fleming, the man who invented penicillin and the happy accident that brought him to it.

Light travels so quickly that sometimes we can forget it even travels at all. Learn all about the direction light travels and perform your own experiment!

Can you explain why your blue shirt is blue? This worksheet is full of facts about light and how it reacts with objects to give us the perception of color.

Need a colorful way to impress your friends and family? This worksheet has got you covered!

Children learn the fascinating physics behind lightning, along with a few fun facts, in this physical science worksheet.

Get familiar with this food chain pyramid, from carnivores and herbivores to producers and decomposers; each group has a role.

Change up your regular classwork with this hands-on science worksheet!

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

Give your budding chemist the facts and practice she needs for measuring with graduated cylinders.

Who knew that the machines of the world are all made of just 6 simple machines working together? Introduce your child to simple machines with this worksheet.

Cells are the building blocks of all living things! Help your little scientist learn the basics of a cell with this fun activity.

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.

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

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

Help your child practice her spelling and vocabulary with this fun worksheet! Discuss with your child what it means to be cold-blooded.

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.

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.

Sometimes measuring liquids scientifically is tricky. Give your budding scientist some practice, by reading measurements on graduated cylinder illustrations.

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

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

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!