Dinosaurs and other creatures don't exist anymore! Learn the names of some extinct animals, and look for them in this fun wordsearch puzzle.

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

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

What is the purpose of a narwhal tusk? Explore some interesting new findings about the narwhal, also known as the unicorn whale.

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

Learn all about the different jellyfish and then test your knowledge with the questions at the bottom of the page.

Fifth-grade learners will look at a diagram of a cell, then follow the instructions to label its parts by color.

Kids love squids! This simple squid diagram will help your 5th grader memorize the squid anatomy.

There's not much in the animal kingdom more interesting than tentacles with suckers! Learn about octopus anatomy with this worksheet.

Don't be crabby! This worksheets introduces your child to a fascinating crustacean. Fill in the anatomy of a crab using the numbers in the word bank.

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

Try out this simple worksheet diagramming the anatomy of a shrimp. Big words, small sea creature.

Learn about the animal kingdom with this centipede anatomy worksheet. Fun fact: Centipedes have either 15 or 17 pairs of legs, but never 16!

Meet the beetle! Filling out this simple worksheet can help your 5th grader learn the anatomy of a beetle.

Try this worksheet diagramming a snail anatomy. It takes a snail over two minutes to travel 12 inches, but your 5th grader can finish this worksheet in no time.

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

Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

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!