Use clues to fill in the boxes in this crossword puzzle, and learn more about freshwater fish along the way.

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!

Review the rock cycle with this second-, third-, and fourth-grade crossword puzzle!

Got a little animal lover on your hands? Let him spend some time with his furry friends with this fun animal crossword puzzle.

Review energy terminology with this fun fourth-grade crossword puzzle!

Did you know that invertebrates don't have backbones? Find out some different types of invertebrates with the clues in this crossword 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!

Do you know which animal has two humps? Your child will use clues to determine what animal name fits in the crossword puzzle with this worksheet.

Use the clues in this crossword puzzle to fill in the blanks with different types of snake names. Learn interesting facts about snakes as you go!

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

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

Did you know the surface of the Earth is always changing? Learn about the events that change Earth's surface with this crossword puzzle for second and third graders!

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.

Help your child learn weather words with this climate-themed word search.

Believe it or not, pine trees and ginko trees have different shaped leaves. See the shapes for yourself and match each leaf to its correct tree.

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!

Use your knowledge of sea creatures to fill out this crossword puzzle.

Looking for a worksheet to help your child with science? This printable will help them with their biology vocabulary.

Crossword puzzles are a great way to make life science learning fun. This one's all about natural selection, and it's sure to give your child a fun challenge.

Practice geology vocabulary with this challenging crossword puzzle.

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

What's the animal that swims upstream? Help your child figure this out with this cold-blooded animal crossword puzzle worksheet.

Kids learn important plant and animal cell vocabulary as they plug the words into their correct spots and complete the puzzle.

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

Review the terminology of collisions with this engaging crossword puzzle for fourth graders!

Is your little one into creepy crawlies? Test his bug knowledge with a fun crossword puzzle.

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

Here's a fun way to review photosynthesis with your child! She'll show off her science knowledge as she answers questions to complete the crossword puzzle.

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

Children discover and review the parts of a flower and what they do as they complete this botany-themed crossword puzzle.