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

What has two legs and carries its baby in a pouch? Fill in this crossword puzzle and learn some fun facts about two-legged creatures!

Investigate the mystery of why two tomato plants developed so differently!

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

Practice classifying different animals in this engaging life science worksheet, created for second and third graders!

Students practice classifying items as liquids or solids for a lesson on the states of matter in this fourth grade physical science worksheet.

Who will win the marble race in this two-page physical science worksheet?

Use this cool 2-page worksheet to make your own big dipper clock!

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!

In this worksheet, children practice identifying animals of North America by their tracks.

Learn to identify and name the parts of a seed in this two-page science worksheet and quiz!

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

Cave formations come in all kinds of shapes and sizes; get the scoop on common cave formations with this two page printout with a maze and vocabulary.

Uncover secrets of the past with this third-grade worksheet about fossils!

These are the largest tortoises in the world, yet they are only two inches long when they hatch! That's one of the facts you can learn from this worksheet.

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.

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

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

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

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

Some people think alligators and crocodiles are the same, but there are some distinct differences. Check out this cool worksheet to learn what they are.

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

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

Does your little gardener know about compost? Test their knowledge of this sensationally smelly earth science process!

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.

Students flex their physical science knowledge by classifying items as solids or liquids in this fourth grade states of matter worksheet.

Children learn why the light from the sun seems white to us, why we see objects in color, and why the sky is blue in this beautiful and fascinating worksheet.

Discover how plants survive in the desert with this third-grade habitat worksheet!

Search for natural resources at the beach in this engaging worksheet for second and third graders!