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.

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?

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.

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.

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

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

This raptors word search is not about dinosaurs, it's about birds! "Raptor" means "bird of prey", and there is a huge list here for your child to find.

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

Put your kid's observational skills to the test with this word search that will help her learn some of the animals that inhabit a rainforest.

In which habitat could you find an arctic fox, a polar bear, and a snowy owl? Have your kid find tundra animals with this word search worksheet.

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?

In which habitat could you find a blue whale, a squid, and a shark? The ocean, obviously! Have your kid find ocean animals with this word search worksheet.

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!

Young astronomers unscramble words to reveal the heavens in this fun space science worksheet.

Discover the animals and plants of the past in this fossil-focused worksheet!

These Valentine's Day cards will be the oddest and most unique cards your sweetie ever got!

These printable Valentine's Day cards are perfect for a kid who's in love with animals and science!

Break down a word to create new ones with this fun worksheet for second through fifth graders!

Children get to know a few geology terms in this landform word search puzzle.

Find out how scientists explain our yawns and use the graph to keep track of your family's yawns for a whole day!

Read about Alexander Graham Bell, the man who made it possible for us to stay connected all day long, in this biography that comes with a science experiment.

What's the difference between renewable and non-renewable energy? Help your student discover the various forms of energy we use each day.

What is the Earth? Here is a reading passage and a word search to help your kid get acquainted with Earth science.

Test your knowledge of electrical energy with this third- and fourth-grade worksheet!

Learn to read a standard thermometer in both Fahrenheit and Celsius in this informative second- and third-grade worksheet!