In this North American animal tracks worksheet, students hone their observation skills by matching tracks to animals.

Read about Alexander Graham Bell, the man who made it possible for us to stay connected all day long, in this biography that comes with a science experiment.

In this worksheet, children practice identifying animals of North America by their tracks.

Space enthusiasts will love learning about Freedom 7, the first manned American space mission.

Get the facts on the beautiful elk, an American treasure and a symbol of Yellowstone National Park.

The horned lizard has a scary exterior but a gentle personality. Your little student can learn about this North American lizard with this worksheet.

Guglielmo Marconi was a man who made waves in radio and sound. Learn about his life and work, then answer a short essay question in this science worksheet.

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

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

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

Learn about the great horned owl of Yellowstone National Park, a bird so big and mean that it has the nickname, "tiger owl."

Children learn to identify the tracks of a pine marten, chipmunk, mountain lion, mountain goat, and grizzly bear in this matching worksheet.