Learn about pearls, which seem like normal jewelry from a factory but are actually made from the mucus of mollusks!

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

These clever birds harden and disguise themselves as tree branches when threatened. Learn more and do some coloring 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.

Flex your mind muscles with a body science worksheet! Your child will learn the fundamentals of what makes up our muscles.

Learn all about the ooey-gooey areas of land called wetlands that provide a home for certain kinds of plants and animals.

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

Did you know that 763 Earths could fit inside Saturn? Learn more fun facts about Saturn on this fun science printable.

Budding scientists will learn about the density of salt water and perform an experiment with food coloring, salt water, and fresh water.

Constellations are not just named after animals, some of them are named after people! Learn about the constellation Sagittarius with this fun worksheet.

Learn to read a standard thermometer in both Fahrenheit and Celsius in this informative second- and third-grade worksheet! 

How much do you know about the U.S. national bird? Learn all about the bald eagle with this fun, informative worksheet!

Did you know that there are forests in the temperate ocean ecosystem? Learn all about the temperate ocean with this fun ecosystems sheet!

Kids find desert animals in this science word search. Animal habitat worksheets help students learn about life forms in different environments.

This printable features the planet closest to the sun. Learn Mercury facts and further your knowledge of outer space by discovering new things.

Animal lovers, get acquainted with a very unique species, the okapi! Read this info-sheet to learn about why this animal is endangered.

Does your child know where Earth is in the Solar System? He'll learn as he completes this fun, planet printable.

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

Too familiar with flies and mosquitoes? Learn about their insect order Diptera as your child colors this bug-lover's fun page.

Back in ancient times, before people knew what the stars were, they told stories about them! With this worksheet, learn about the constellation Cygnus.

The horned lizard has a scary exterior but a gentle personality. Your little student can learn about this North American lizard with this worksheet.

Butterflies and moths may have very different colors, but they are from the same insect order! Learn about lepidoptera with a fun coloring page.

Learn about the farthest planet in our solar system, Neptune. Facts include interesting bits about the vast winds that keep its surface moving!

Did you know that each tree tells a story? In this worksheet, children peer inside a tree to learn about the layers in its trunk.

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

Children learn to identify the tracks of a pine marten, chipmunk, mountain lion, mountain goat, and grizzly bear in this matching worksheet.

Almost half of all known fish species call ponds, lakes, rivers, and other freshwater habitats home. Learn about freshwater fish in this worksheet.

Put your kid's observational skills to the test with this word search that will help her learn some of the animals that inhabit a rainforest.

Some people think alligators and crocodiles are the same, but there are some distinct differences. Check out this cool worksheet to learn what they are.

Coyotes' famous howl gave them the nickname "song dogs." This is just one of several coyote facts your child can learn from this worksheet.