Learn all about rivers--how they were formed, what they're made of, and what they do for us and the planet--in this reading and science worksheet.

Learn all about rollie pollies, a small but unique creature that always fascinates little kids. There's even a bit of rollie pollie match to boot.

This short nonfiction text will provide students with an opportunity to become more comfortable with identifying and defining academic vocabulary words—and they'll have fun learning all about the life cycle of a chicken in the process!

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

Check out this Awesome Anatomy page about your voice.

Learn a bit about the Brazilian rainbow boa with this cool science worksheet.

Ever wonder what's inside a camel's hump? Find out with this fun worksheet! It's jam-packed with facts about camels.

Teach your little scientist the difference between physical and chemical changes, on a molecular level.

Did you know wolves are the largest members of the dog family? This fun worksheet is jam-packed with fun facts about the wolf!

Why did the fox cross the road? To look for the chicken! This fun worksheet is jam-packed with fun facts about foxes!

Did you know cougars can leap 20 feet from a sitting position? This fun worksheet is jam-packed with fun facts about the cougar!

Did you know that some caribou travel 3,000 miles in a year? This fun worksheet is jam-packed with fun facts about the caribou!

Did you know opossums are marsupials, which means they have a pouch! This fun worksheet is jam-packed with fun facts about the opossum!

Where is the liver located? Using the diagram as a reference, kids cut out the different parts of the liver from this worksheet and piece them together.

Ecosystems are an important part of fourth grade science. This fun printable will help your child with her knowledge of plants and animals.

Looking for a worksheet that will give your kid help with his life-science skills? This printable will challenge his knowledge of birds.

Did you know that Uranus can get as cold as -144° Fahrenheit? Learn more about the third largest planet in our solar system on this planet printable.

With this enlightening worksheet, kids will get a glimpse into how our brains' different parts function in surprising ways.

Searching for a worksheet to help your fourth grader with science? This printable will help him practice astronomy vocabulary.

Go from a butterfly beginner to an expert with this worksheet, full of pretty butterflies and tons of information about where butterflies live.l

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

Think toads and frogs are the same? Think again! Check out this breakdown of the differences between the two, complete with a quiz to check your new knowledge.

Learn about the plants and animals that make deciduous forests their home, then complete the crossword puzzle.

Does your child love dogs? Test his knowledge on the different breeds of dog with some trivia questions!

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

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

Light can do amazing things, but nothing else brings out its crazy capabilities like the prism. Learn about the dazzling prism and make one of your own.

What is Pluto? According to scientists... no, not quite. Find out more behind the answer to that age-old question.

Learn about your sense of touch with this Awesome Anatomy page on the nervous system.

I spy with my little eye... six simple machines! Here's a fun way to help your child review the simple machines.