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!

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!

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!

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

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.

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.

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.

The silverback gorilla is a special animal. This magnificent male is part of an endangered species. Complete this sheet to learn all about this gentle giant.

Here is a fun animal info sheet that doubles as a spelling exercise! Your child will learn all about the Golden Eagle, and complete a word scramble.

Learn a new species of bird with a fun info sheet! Your child will read a few facts about the American Kestrel, and complete a word scramble.

Animal lovers, here is a fun page all about the falcon! Your child will read a few fun facts about this bird, and complete a word scramble.

Learn about a cool species of bird with this Osprey fun sheet! Your child will read a few fun facts about the Osprey, and complete a crossword puzzle.

Learn a new species of bird with a fun info sheet! Your child will get to read some fun facts about the Sharp Shinned Hawk, and complete a crossword.

With this animal fun page, your child will read a few fun facts about the Great Gray Owl, and complete a crossword based on what he's learned.

With this fun sheet, your child will get to learn a few fun facts about the raven, and then complete a crossword based on what she's just learned.

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

Here is a fun way to learn about a species of bird: the barn owl! Your child will get to complete a crossword puzzle based on fun facts he's read.