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!

This packet of worksheets introduces children to food webs, an important life science concept.

Review the rock cycle with this second-, third-, and fourth-grade crossword puzzle!

Budding inventors can get a fun review of the simple machines with this word search.

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!

For kids learning geography or earth science, this is the perfect review sheet for drilling students on common geography terms and phrases.

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

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

I spy with my little eye... six simple machines! Here's a fun way to help your child review the simple machines.

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

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

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

A fun challenge for kids, this Earth Day crossword puzzle is a great way to review facts about the Earth and get a reminder on how to live green.

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!

Here's a fun way to review photosynthesis with your child! She'll show off her science knowledge as she answers questions to complete the crossword puzzle.

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

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.

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.

Teach your child about plants with this worksheet, which helps your child practice botanical vocabulary.

Analyze everyday objects and identify states of matter with this second- and third-grade science worksheet!

How many machines can you find around the house? You may find them where you least expect it!

What is geothermal energy? Find out how we use parts of the Earth to provide us with renewable energy!