Ten lessons are included in this interdisciplinary unit on navigation, designed to supplement fifth and sixth grade social studies and science curricula. Each lesson includes: (1) lesson concepts; (2) competency goals; (3) objectives; (4) materials; (5) list of key vocabulary words; (6) background information; (7) teacher preparation; (8) list of student activities; (9) questions for students to answer; and (10) a short bibliography. Activities are designed to foster inquiry, manipulative, creative organizational, communicative, and measurement skills and to enable students to develop a better understanding of: (1) their maritime heritage; (2) some problems navigators faced in the 16th and 17th centuries; (3) the history and development of navigational instruments; and (4) the importance of celestial navigation. A packet of materials to be duplicated for student use is included. (JN)