We all know the famous equation E = MC^2. But what does it mean? Learn a bit more about Einstein's famous energy equation with this physical science worksheet.

Did you know an elephant can eat 300 pounds of food in one day? This fun worksheet is jam-packed with fun facts, a word search and trivia, all about elephants!

Crossword puzzles are a great way to make life science learning fun. This one's all about natural selection, and it's sure to give your child a fun challenge.

Did you know some baby birds take 10 days to hatch, and some can take 80 days! Learn all about these cute creatures and finish your lesson off with a fun maze.

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!

Here's a crazy thought experiment for you. Imagine you could create a monster made out of electricity!

Step up to the controls, Dr. Frankenstein -- the world is in need of a new creature!

This nonfiction passage helps kids develop reading comprehension skills, as well as learn important ecological facts.

Take a peek into a temperate forest ecosystem with this food web worksheet for fourth and fifth graders!

This multi-page worksheet provides an opportunity for kids to practice both their understanding of food webs and their reading comprension skills.

This bright and colorful worksheet helps your child bring the technical terms of the bones in his legs down to size.

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

Learn the importance of natural adaptations with this inquisitive activity!

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.