Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

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.

All the animals in this word search share one characteristic: none of them have bones! Can your child find the boneless critters hidden in the puzzle?

This Earth Day quiz family and friends with this true or false questionnaire. It's all in good, informative, fun!

Does your learner ever wonder what makes the Earth dark at night and bright during the day?

Don't let your kid bark up the wrong tree! Engage him in a word search filled with tree terms, boosting his attention to detail and problem solving skills.

Kids find forest animals in this third grade science word search. Animal habitat worksheets help students learn about life forms in different environments.

Kids find grassland animals in this third grade science word search. Animal habitat worksheets help students learn about life forms in different environments.

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.

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Did you know an elephant can eat 300 pounds of food in one day? This fun worksheet is jam-packed with fun facts, a word search and trivia, all about elephants!

Brush up on some physics vocabulary with this energy word search!

This word search is all about owls! Your child will learn a few different species of owl as he looks for them in the word search.

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

Learn about the texture and hardness of different objects in this second-grade worksheet!

Is a feather liquid, soft, spotted, or heavy? Practice describing everyday objects, or matter, with this second-grade science worksheet!

Invite spellers on an inter-stellar adventure with this fun word scramble puzzle.

Explore the applications of electrical energy with this helpful second-grade worksheet!

Budding paleontologists will refer to a word bank to identify 10 dinosaur-related vocabulary words in this playful word search puzzle.

The Earth is very much alive, even its rocks shift and change. Practice geology vocabulary with this challenging word search.

Are students studying electricity? Give them a break from the scientific nitty-gritty with this fun word search full of electricity terms!

What do juice, water, and tea have in common? Compare and contrast matter in this engaging second-grade worksheet!

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

These 12 dinosaur names are all mixed up, and need a dinosaur expert to help unscramble the letters.

Looking for a fourth grade worksheet to help your kid with science? This printable will help with your child's botany vocabulary.

A lot of common objects use electromagnets to work. This word search will get your child thinking about all the electrical and mechanical devices around her!

Here's a fun way for kids to review their knowledge of earth science terms. Challenge your child to give a definition of each word as he finds 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.

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

This word search helps expand kids' animal vocabulary and introduces them to animals that live in shells, all while keeping them entertained.