Crustal Evolution Education Project (CEEP) modules were designed to: (1) provide students with the methods and results of continuing investigations into the composition, history, and processes of the earth's crust and the application of this knowledge to man's activities and (2) to be used by teachers with little or no previous background in the modern theories of sea-floor spreading, continental drift, and plate tectonics. Each module consists of two booklets: a teacher's guide and student investigation. The teacher's guide contains all of the information present in the student investigation booklet as well as: (1) a general introduction; (2) prerequisite student background; (3) objectives; (4) list of required materials; (5) background information; (6) suggested approach; (7) procedure, including number of 45-minute class periods suggested; (8) summary questions (with answers); (9) extension activities; and (10) list of references. During the two-three recommended class periods, students determine rate of crustal plate movement during periods of geologic time, interpret areas representing flooding and draining of continents using a graph of sea level changes, determine effects of sea level change on evolution and extinction, and describe relative amount of stress and former environmental conditions that existed at the time sediments were deposited. (Author/JN)