The teacher of library science can use case studies, simulations, and role playing to acquaint future librarians with the realities of library management. By using models, contextual statements, incident materials, and course management materials, the students can be involved in specific library problems which will later have broad on-the-job application. In order to most effectively use this method, the instructor must change from the traditional teacher-centered model to a facilitator model where he initiates and evaluates exercises, but is no longer the focus of class attention. Sample exercises, a bibliography, and hints on the design of simulation materials are provided in this textbook. (EMH)