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!

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

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

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

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

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

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

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

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

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

Learn more about two kinds of aquatic biomesÃfreshwater and saltwater biomesÃand how you can tell them apart.

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.

Do you know which animal has two humps? Your child will use clues to determine what animal name fits in the crossword puzzle with this worksheet.

Looking for a quick reference about gravity and a definition for kids? This two page worksheet and activity has you covered!

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

Unearth fossils in this explorative third-grade worksheet!

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

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

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

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

Apply concepts of energy and motion to marbles in this fourth-grade worksheet!

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.

Let your kid's knowledge of leaf vocabulary climb as high as a tall, tall tree with this fun word search.

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

Review energy terminology with this fun fourth-grade crossword puzzle!