Take a quick lesson in the otters that inhabit Yellowstone National Park and take an even quicker quiz.

This worksheet features a scientific explanation and awesome photos of solar eclipses, which are extremely rare scientific phenomena.

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

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

Ready for a truly electrifying lesson in science? Find out how electricity forms and what makes a lightning bolt!

Find out all about the different parts of the eyes and how they work together to make vision possible.

This Awesome Anatomy page focuses on the heart and how it pumps blood to all parts of your body.

Do you know why Mars is called the Red Planet? Find out that and more on this planet printable.

This fun worksheet is jam-packed with fun facts, a word search and trivia questions, all about the baboon!

Test your students' knowledge and memory of periodic table elements with this crossword puzzle.

This Awesome Anatomy coloring page is all about the human eye, and makes a handy study tool as well!

The insect order Hemiptera consists of True Bugs such as Stainers, Assassin Bugs, Leaf-Footed Bugs, and this Boxelder Bug.

The Earth is very much alive, even its rocks shift and change. Practice geology vocabulary with this challenging word search.

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

Collecting data is an important part of math and statistics. Practice gathering data using items around the house or classroom!

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

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

Learn more about molecules and how they comprise the air all around us in this intro-to-earth-science worksheet.

Use clues to fill in the boxes in this crossword puzzle, and learn more about freshwater fish along the way.

If you're fascinated by bugs, check out this coloring page featuring the insect order Odonata, which consists of damselfies and dragonflies.

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

Identify the appearance of the moon during its three main phases which include the New Moon, Quarter Moon, and Full Moon.

How did salt ever get into the ocean? Find out how, and then try conducting your own salt water experiment.

Learn how sand dunes form, and a little bit about desert formations like yardangs as well, in this science summary sheet.

Learn about a famous woman of science, Rosalind Franklin, and how she contributed to the discovery of DNA's double-helix structure.

Did you know plants make their own food? Discover how with this fill-in-the-blank worksheet for third and fourth graders!

Challenge your child' memory skills with this colorful worksheet. This fun printable will help with memorization skills and spatial awareness.

Learners will discover what heat waves are, and how they are connected to global warming, in this two-page earth sciences worksheet.

Find out how scientists explain our yawns and use the graph to keep track of your family's yawns for a whole day!

How does our sense of taste function? Introduce your child to the anatomy of our tongue with this diagram and info sheet.