It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

In this introductory tree-diagramming worksheet, young naturalists will unscramble each label to reveal five parts of the tree.

Meet the master of compound machines: Rube Goldberg! His wacky contraptions put a whole new spin on the use of simple machines.

Playing in the dirt was never so educational! Shake things up with this fun experiment about soil.

Crank out a better understanding of simple machines with this worksheet all about the wheel and axle!

This experiment requires only lemon juice, salt, sugar and grapefruit. Your budding scientist can get a great introduction to science by testing her own tongue!

Little scientists can learn about a fundamental concept of physical science with this worksheet all about density!

This worksheet featuring food and natural resources touches on the subject of food chains.

Aspiring astronomers, get ready for a stellar coloring page all about the moon! Your child can read some fun facts as he colors.

Did you know butterflies have no teeth? How do you think they eat? Check out this science worksheet to learn all about it.

From the blue whale to the Tasmanian devil, our planet is full of fascinating animals. Find a few of the most interesting ones in this animal word search.

Count the number of sea creatures and make a bar graph with this shark worksheet. Make an underwater word ladder with your 2nd grader, too.

All living things need water to survive. Listed are some of the ways we use water: can your child think of others?

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

Challenge your child's knowledge of astronomy with this space-themed worksheet, which focuses on the timing of cosmic events.

Teach your child how we measure temperature with these printable thermometers!

Your child will write about his or her favorite animal. Kids will research their favorite animals online or at the library, then write down three facts.

Through a simple matching activity, kids learn how their actions can have a direct effect on the environment.

Your child has probably tried a potato, but does he know the process it goes through to make it to the table? Find out with this life science worksheet.

Download this worksheet for answers to our animal reading comprehension series.

Get to know the planets of our solar system with a stellar coloring page filled with fun facts about Uranus!

Dig up some earth science learning with this printable, and turn your next hike or beach excursion into a lesson in soil science!

Do you know what's the largest parrot in Africa? It's the African grey parrot! Learn about this blabbering bird and give the image some color.

Can you tell which types of weathering caused each of these changes in the earth? This activity is a great way to review the 3 main types of weathering.

Get to know the planet Saturn with this fact-filled coloring page! Your little astronomer can read some interesting information on Saturn as he colors.

How much do you know about our solar system's largest planet? Read a few fun facts about Jupiter as you color this page.

Get to know Earth's neighbor a bit more with this Mars coloring page! Your child can read a few fun facts about Mars as he colors.

Discover the symbiotic relationship that helps this angler fish find his next meal!

Children familiarize themselves with the tracks of a duck, bobcat, coyote, deer, raccoon, and black bear in this life sciences worksheet.

The Goliath birdeater is a spider that lives in South America. Your child will read a paragraph about spider before writing an opinion sentence.