Decide what differentiates living vs non-living things! First cut out the items on page 1, and then sort them in the chart on page 2.

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!

Learn about food chains in this cut-and-paste worksheet for first graders!

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!

Hey, did you hear that? Explore real-life examples of sound energy with this kindergarten and first-grade worksheet!

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!

To complete this worksheet your first grader will need to match the different animals with their homes.

If a ship went down, would these items sink or float? Your little one will decide, with this fun worksheet to help him hone sorting and categorizing skills.

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

See if you can identify the objects that let light pass through them with this kindergarten and first-grade worksheet!

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

These two children sure look alike -- maybe because they're twins!

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

Did you know that having a pouch or a shell can help an animal meet its needs? Learn how animals use different parts of their body with this matching worksheet for kindergarteners and first graders!

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?