Activities designed for a fourth-year college German class involving role-playing and simulation of either real or realistic situations are described and explained. The situations are developed in genuine communicative settings encouraging dynamic exchange of ideas and opinions. Examples of simulations presented include a United Nations Security Council meeting following declaration of Polish martial law, courtroom proceedings in a real case investigating the death of a teenaged West German apartment squatter, and a selection committee for a real award (e.g., the Nobel Prize) or one invented by the instructor. The simulations require substantial preparation on the part of both teacher and students, but once they are under way, the instructor does not comment on conversational errors. However, the entire exercise is later examined in class, using audio tapes, and errors are corrected and discussed. The interactional nature of the exercises promotes exchange of ideas, information, and feelings within the target language. Grading can be done from the actual exchange or from the tapes, and can consider student preparation, communication, number of contributions to the discussion, value and pertinence of contributions, and mechanical errors. (MSE)