Learn all about Alexander Fleming, the man who invented penicillin and the happy accident that brought him to it.

Children match animals to their ecosystems in this life sciences worksheet.

The next time your parents ask you to wash your hands before dinner, read this worksheet about Joseph Lister and take their advice!

Read about the small population of huge moose in Yellowstone National Park.

Test your third grader's biology knowledge with this worksheet, which challenges him to separate invertebrates from animals with a backbone.

Explore the vast ocean with this habitat worksheet for second and third graders!

Identify the life cycle of a butterfly with this hands-on worksheet for second and third graders!

Explore a wetland habitat with this engaging short-answer worksheet for second and third graders!

Explore a tropical rainforest habitat and its inhabitants with this engaging worksheet for third graders!

Uncover the plant life of an icy tundra with this habitat worksheet for second and third graders!

Practice classifying different animals in this engaging life science worksheet, created for second and third graders!

Learn the difference between behavioral and physical adaptations with this cut-and-paste worksheet for second and third graders!

Learn more about a tide pool habitat with this life science worksheet for second and third graders!

Determine if certain animals could live in a temperate deciduous forest with this habitat worksheet for third graders!

What is the purpose of a hard shell or a long neck? Discover different adaptations with this matching worksheet for second and third graders!

Are chickens mammals, fish, or birds? Sort animals by their traits in this informative life science worksheet!

What makes a reptile different from an amphibian?  Learn all about animal classifications in this worksheet for second and third graders!

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

Get to know the residents of the reef with this coral reef-themed crossword, perfect for expanding life science knowledge and working on vocabulary, too!

Learn more about the animals in the swamp food chain, and find out how each living thing in a swamp ecosystem needs another to survive.

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.

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!

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

Pigs, cows, and ducks, oh my! The clues in this animal crossword puzzle worksheet will help you remember what animals there are on a farm.

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.

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.

Stretch your backbones and learn about the creatures that have a spine and those you don't!

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

An energy pyramid is a simple way to graphically show how energy flows in an ecological community; somewhat similar to the food pyramid.

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