Cranium, noodle, melon, noggin...the human skull has been called a lot of things over the years. Here are the proper names for each part.

Test your knowledge of electrical energy with this third- and fourth-grade worksheet!

Are chickens mammals, fish, or birds? Sort animals by their traits in this informative life science worksheet!

Hypothesis, observation, data...with so many terms, learning the scientific method can be tricky. Learn the steps by helping Dr. McSquare sort out his reports.

Ready for liftoff? Take to the starry skies with this worksheet that explores the three basic types of galaxies.

Connect forms of energy to real-life scenarios in this third- and fourth-grade worksheet!

Young inventors will have a blast with this worksheet on compound machines! Use three of the six machines together to make work easier.

Identify the appearance of the moon during its three main phases which include the New Moon, Quarter Moon, and Full Moon.

This is not your average coloring page. Using only the three primary colors, mix your paints together to form as many colors as possible.

Consider the factors that affect magnetic forces in this informative third- and fourth-grade worksheet!

What is a plateau? What's the difference between a butte and a mesa? Look at these three land forms and learn to tell them apart with this worksheet.

Are cats trying to talk to us when they purr? Discover the meaning behind the purr in this worksheet that explores the three main types of cat purrs.

Look up into the night sky, and you may see three prominent stars side by side. This is Orion's belt, one of the most well known constellations!

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.

Unearth fossils in this explorative third-grade worksheet!

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

Earth has many different land and water features—can you recognize them? Test your knowledge with this crossword puzzle for third and fourth graders!

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

For all you mad scientists, here is a helpful lab safety 101! You'll get to read a few basic rules, and then complete a word search.

Learn all about essential laboratory equipment with this hands-on worksheet for fourth and fifth graders!

Help third and fourth graders become rock stars with this informative geology worksheet!

Explore the applications of electrical energy with this helpful second-grade worksheet!

Dive into the electrifying concept of electrical energy in this colorful worksheet!

Match forms of energy to common examples in this third- and fourth-grade science worksheet!

Explore the strength of magnetic forces with this worksheet for third and fourth graders!

Determine which magnets have the strongest force in this third- and fourth-grade worksheet!

Discover different types of energy with this third- and fourth-grade science worksheet!

Studying the human body? Get to know your body inside and out with this muscle diagram.

Learn about the Uinta ground squirrels of Yellowstone National Park.

That's not a lake... it's a crater! Get the scoop on some of the world's most well known craters with this space science worksheet.