This Earth Day, learn about conservation and the environment while you enjoy solving a fun puzzle! 

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

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Energy is a crucial part of physical science! All things on Earth have energy, whether it's potential or kinetic.

Discover Earth’s four major systems, or spheres, in this engaging fifth-grade worksheet!

Discover Earth’s different spheres with this fourth- and fifth-grade earth science activity!

Learn the ins and outs of one of the body's most important organs: the heart!

Increase your child's vocabulary and knowledge of the scientific world around him with a single sheet!

Water covers 70% of Earth’s surface—but where exactly is it? Find out in this fifth-grade worksheet!

Discover some of the fascinating properties of gravity by studying one of Newton's famous laws, the Law of Gravitation.

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!

There's not much in the animal kingdom more interesting than tentacles with suckers! Learn about octopus anatomy with this worksheet.

What's the animal that swims upstream? Help your child figure this out with this cold-blooded animal crossword puzzle worksheet.

How much do you know about man's best friend? This fun worksheet is jam-packed with fun facts about dogs!

If you push your little brother, does he push back? Well, according to Newton's third law of motion, he does!

What is the water cycle? We're glad you asked! Learn about this amazing natural system that's been working for billions of years.

Kids learn about the Earth's solid and atmospheric layers, then label the diagram with the correct terms in this fifth grade Earth science worksheet.

After your child fills in this review sheet on chemical and physical properties, it's a good idea to hold onto it for future test review!

Dragonflies are some of the oddest looking insects in the world, so it's appropriate that they have so many unique characteristics. Read all about them!

There's a lot happening beneath the waves, including the ocean food web. Take a closer look with this colorful printable.

There are some parts of our brains that are still too complicated for scientists to understand! Find out the basics of the brain's functions with this fun page.