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!

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

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

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!

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

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.

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.

Where do flower babies come from? Find the answers in this word search about plant reproduction!

If your child is fascinated by outer space, he'll love this solar system word search! While reviewing planet names, he'll ponder the mysteries of the universe.

There are a lot of structures that make up a new plant, called a seedling. Your child will learn what they're called with this life science 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.

Fossils have a lot to teach us about life on earth, but they can also be used to help teach kids the scientific method.