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

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.

Fifth-grade learners will look at a diagram of a cell, then follow the instructions to label its parts by color.

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

Did you know chameleons can sleep upside-down? Learn more about chameleons with this fun worksheet, jam-packed with fun facts and activities!

Ever wonder what makes the leaves change colors in the fall? Find out with this fascinating life science worksheet.

Grandma and grandpa didn't always have gray hair. Find out about what gives our hair color and what makes our hair lose that color as we get older.

There aren't many blue animals out there, but here's one that will be fun to color: the blue dart frog. Its bright color warns predators that it is poisonous.

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

Learn all about cells, the tiny pieces that make up our body, in this color-in diagram.

Color in this Awesome Anatomy page on the respiratory system and learn about how we breathe!

Color this Awesome Anatomy coloring page that focuses on how the ears work to hear sound.

Discover some fun facts about the sun — and bring it to life with color — with this astronomy worksheet!

Color in the gold and red colors of this common grasshopper species and learn about insect orders with your child!

Color in this diagram to see how a tree works and to better understand how many plants transport their "food".

Get to know your genes with Steve the savvy scientist! Genes help determine everything from your hair color to your height.

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

The water cycle plays a big role in weather patterns. Color this water cycle chart and get familiar with this cycle at work.

Let your coloring skills blossom with this flower anatomy worksheet. Make your own flower, color and put your vocabulary skills to the test!

Help your child read this page about the Sumatran rhinoceros, where they can color an illustration as they learn about why this animal is endangered.

Teach your child about an endangered species with this information page, all about the Forest Owlet. They can color as they read some interesting facts.

Learn a little bit about green tree frogs (like that they sleep on the underside of leaves!) and then color in this scene of them at the zoo.

Have you ever heard of a Caracara? This fun page is full of facts about this unique bird, including a word scramble and a color by number activity.

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.

Children learn why the light from the sun seems white to us, why we see objects in color, and why the sky is blue in this beautiful and fascinating worksheet.

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?

If your kid gets excited about snakes, you need this cool worksheet. Learn a bit about carpet pythons, such as what colors they may be, and then color the picture.

How much do you know about our national bird? Enjoy an info page about the bald eagle, with a mini crossword, some fun facts and a picture to color.

Do you know what's the largest parrot in Africa? It's the African grey parrot! Learn about this blabbering bird and give the image some color.