Meet the master of compound machines: Rube Goldberg! His wacky contraptions put a whole new spin on the use of simple machines.

All living things have a life cycle. Learn about the different stages that a bird goes through from birth to adulthood!

Searching for a worksheet that will help your child practice their reading skills? This printable uses life science as a background to help young readers.

This worksheet teaches kids about the physics of hockey, applying principles of classical mechanics to an effective slapshot.

How much do you know about our solar system's planets? Kids learn facts about Neptune in an out-of-this-world worksheet.

Milky Way: candy bar or galaxy of 100 to 400 billion stars?

Ever wonder what causes lightning to strike? Explore the physics of lightning with this striking physical science worksheet!

Just like all plants and animals, you go through different stages in life too! Help your child to see how he will change and grow throughout his life.

There are lots of stories around the world for the rabbit moon: a rabbit image seen in the shadows on the moon's face. Here's one for young moon-gazers!

Teach your child how to respect the ecosystem with a science worksheet that doubles as a coloring page. Can they identify the sources of pollution in the scene?

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

Dig up some earth science learning with this printable, and turn your next hike or beach excursion into a lesson in soil science!

Learn about the science behind one of nature's most awesome spectacles: monsoons.

There are many endangered species all around the world. Read about the Amur leopard and why it's endangered with this information page.

Introduce your child to a fascinating new animal, the Baird's tapir. This is just one of many endangered species around the world.

Celebrate the fall season with this nature sketchbook, perfect for any lover of the outdoors!

This worksheet is a quick-reference tool of space vocabulary for kids, with an exercise to use the words properly in provided sentences.

This helpful worksheet lays out all the qualifications for planethood. A great way to start studying outer space science!

How do the Sun and the Moon interact with the Earth, and how do all three depend on one another? Find out in this science worksheet.

Did you know that insects like dragonflies have life cycles that are very similar to our own? Help your little scientist get to know the circle of life.

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

Explore the science of the sun with this make-your-own sundial activity! Just do a little bit of cutting and coloring, and let the sun do the rest of the work.

Here is a brief introduction to The Great Pacific Garbage Patch for kids!