This seven part teacher's guide is designed to accompany the Public Broadcasting System (PBS) television series, "Columbus and the Age of Discovery," and also may be used without viewing the programs. The guide features seven units that reflect the themes of the television series. The units are: (1) "Columbus's World"; (2) "An Idea Takes Shape"; (3) "The Crossing"; (4) "Worlds Found and Lost"; (5) "The Sword and the Cross"; (6) "The Columbian Exchange"; and (7) "In Search of Columbus". The focus of the units is on activities that are related to the subjects covered in the programs. The activities are designed to help students understand the world that produced Christopher Columbus, the cultures that existed in the Western Hemisphere before he arrived, the motivations behind his voyages, the resulting exchange, and the legacy of his encounter. In addition to the seven units and seven activities, the guide offers extensive reading and resource lists and student handouts that support the activities. The National Council for the Social Studies Position Statement on the Columbian Quincentenary also is included. (DB)