From nature hunts and rock painting to recycled art and poetry writing, these activities combine scientific exploration with arts and crafts projects.

Match the sense to the picture in this five senses worksheet!

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

Invite budding naturalists to sharpen their observation skills with this colorful, printable scavenger hunt.

This Earth Day quiz family and friends with this true or false questionnaire. It's all in good, informative, fun!

Stem, primary root, secondary root … Let your kid dig into this colorful worksheet, and fill in the missing names on this tree parts diagram.

Use your knowledge of sea creatures to fill out this crossword puzzle.

Learn about the amphibians and reptiles of Yellowstone National Park.

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.

This Earth maze features a cool globe design. Perfect as an Earth Day activity, our Earth maze gets your child to consider our home planet.

Learn all about the different jellyfish and then test your knowledge with the questions at the bottom of the page.

Learn about the black bears of Yellowstone National Park.

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

Ready to make a body outline? This seriously fun project will give kids some big insights into the important systems that make up their bodies!

Kids write down examples of solids, liquids, and gases in this 1st grade physical science worksheet that focuses on the states of matter.

Wolves are an animal with a bit of rough past in Yellowstone National Park. Learn all about them!

This cute worksheet prompts your first grader to find out what characteristics are shared by amphibians, and then circle the animals that fit that category.

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.

Learn about the great horned owl of Yellowstone National Park, a bird so big and mean that it has the nickname, "tiger owl."

Kids will cut out the various functions listed at the bottom of this kidneys and intestines worksheet and match them to the correct organ.

This worksheet gives your fifth grader some skeleton know-how, as she fills in the diagram with the bones from the wrist to the fingertips.

Learn about the grizzly bears that live in Yellowstone National Park.

Read about the small population of huge moose in Yellowstone National Park.

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

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.

Teach your fifth grader about this important bony structure with a fill-in-the-blank skull diagram.

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.

Help your kid get his head around the seasons with this worksheet that asks him to draw a picture of the correct season according to what each kid is wearing.

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