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

Boost your second grader's knowledge of space with this fun worksheet, which will have her unscrambling the answers to planetary trivia.

Have fun learning about food chains in this charming science worksheet!

Tree climbers and tree huggers alike, learn the basics of reading tree rings to find out about the life of a tree.

Build nature vocabulary with this habitat-matching worksheet!

Space enthusiasts will love learning about Freedom 7, the first manned American space mission.

These "Dig It!" worksheets not only teach about life on earth, they teach the scientific method as well.

Pull the lever on learning! Get to know one of the six simple machines with this worksheet about the lever.

Have some fishy fun by learning both the common and scientific names of different fish! Add color to the underwater scene.

For all you aspiring astronauts, here is a worksheet for learning the constellations! Learn all about the constellation Gemini with this sheet.

Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

Dig up some earth science learning with this printable, and turn your next hike or beach excursion into a lesson in soil science!

What's better than coloring and learning at the same time? Here's a great informational sheet on koala bears that doubles as a coloring page!

This mole has a pouch for its young, just like kangaroos. Get your child into life science learning with this fun coloring page.

The Oregon state bird is the Western Meadowlark. First graders will love learning fun facts and adding color to the picture of this bird!

Can you name the different parts of a tree? This scrambled words worksheet is a great way to get your child thinking about life sciences and nature.

Not your typical crossword, this puzzle will have your child learning to recognize the shapes of the continents. Great for map skills and vocabulary!

Ancient mariners mistook the manatee for a mermaid! Your young biologist won't make the same mistake after learning about the manatee with this worksheet.

Explore this diagram of the water hyacinth with your little one. She'll be learning the parts of a flower as she colors in this delighful picture.

Engage your little scientist with a fun word search, all about sinking and floating! He'll be learning a basic concept of physical science.

Get outside and take a stroll! This leaf guide will give your little one a great learning experience the next time you're out at the park.

Did you know that your tongue is one of the strongest muscles in your body? Tickle your learning taste buds with this worksheet all about your tongue.

Learning about the functions of plant parts doesn’t have to be puzzling! Review the parts of a plant with this crossword for first and second graders.

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!

The Sunflowers and Moth Coloring Page will engage second graders in adding color to bring the scene to life while learning the scientific names for the species!