Did you know some baby birds take 10 days to hatch, and some can take 80 days! Learn all about these cute creatures and finish your lesson off with a fun maze.

Do you know the functions of the primary organs in the human body? Put your knowledge to the test with this fourth- and fifth-grade crossword!

Earth has many different land and water features—can you recognize them? Test your knowledge with this crossword puzzle for third and fourth graders!

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.

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

Learning about the functions of plant parts doesn’t have to be puzzling! Review the parts of a plant with this crossword for first and second graders.

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

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

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.

Practice geology vocabulary with this challenging crossword puzzle.

Never heard of the planet Pirjute? That's because it's Jupiter, with mixed-up letters! Kids unscramble planet names on this third grade science worksheet.

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

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

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!

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.

If you know what each planet looks like, you'll have no trouble with this intergalactic crossword puzzle.

Invite budding naturalists to sharpen their observation skills with this colorful, printable scavenger hunt.

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

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

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

Children put their science vocabulary to the test with this engaging crossword puzzle!

Which comes first, genus or phylum? To complete this life science crossword, kids need to put the 9 levels of biological classification in the correct order.