The use of learning groups in the introductory psychology classroom at the University of Minnesota, General College, is discussed. Learning groups are used to get students to work together on tasks that teach them concepts or skills. It allows an active discovery process to take place as students use their own and other's resources while working through problems or review exercises. The key to success is tight structure and organization. An explicit and comprehensive course outline, criterion grading, a student workbook, laboratory exercises, frequent quizzes, and extensive feedback are central concepts of the course model. These are necessary features when a class of 270 is divided into groups of four. Teaching assistants and tutors are also used and a training program for them has been designed. Evaluations of the class demonstrate its effectiveness in maintaining student performance, encouraging appropriate study behaviors, and eliciting student's approval of their learning experience. Learning groups provide the social exchange that improves students' educational experience, and avoids modes by which students only listen to lectures or relate to other students competitively. The organization of class sessions on each day of the week is described. (Author/SW)