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.

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.

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!

Learn the difference between behavioral and physical adaptations with this cut-and-paste worksheet for second and third graders!

Identify the life cycle of a butterfly with this hands-on worksheet for second and third graders!

Help your child learn about the nervous system and the digestive system with this fun worksheet, which will challenge his knowledge of physiology.

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

What do a key, a goldfish, and a tortoise shell have in common? Find out with this second-grade science worksheet!

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

Describe how things feel when you touch them and push on them!

Learn about the similarities and differences between objects in this colorful science worksheet!

Discover the many different kinds of conifer and deciduous trees as you complete this word search!

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!

Give your little animal lover a great coloring sheet, complete with a few fun facts about the red kangaroo!

Prepare for an exciting experiment with this cut-and-paste lab safety worksheet for first and second graders!

Children discover and review the parts of a flower and what they do as they complete this botany-themed crossword puzzle.

Find a definition of what "natural resources" are, and complete the natural resources word search. It's a good vocabulary warm-up!

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.

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!

Kids learn important plant and animal cell vocabulary as they plug the words into their correct spots and complete the puzzle.

Use this fossils worksheet to help a child learn about life on earth. Your child will learn about evolution and extinction, and also form a hypothesis.

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

How do you know when it's wintertime? Have your child complete this winter writing prompt to exercise writing skills and reinforce seasonal knowledge.

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

If your child loves animals, introduce her to a cool species of bird with this Northern Hawk Owl info sheet, complete with coloring and a crossword.

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

Which comes first, genus or phylum? To complete this life science crossword, kids need to put the 9 levels of biological classification in the correct order.