On a clear night, you should be able to see the stars. But we cannot always see them. Light pollution prevents us from seeing the stars and causes other problem

Stars light up the sky on a clear night. They may look the same from Earth, but they come in many sizes and colors. Students will launch into learning about the

Ancient Polynesians were some of the best navigators in history. They sailed double-hulled outrigger canoes across great distances and settled in all the major

Learn about the world of optics, where light bends to help us see the sights! Most of us rely on our eyes to see and understand the world. Yet, human eyes are f

Explore the story behind the American national anthem! This 6-pack of nonfiction readers will teach second grade students the history of “The Star-Spangled Ba