This paper brings together and examines several of the better known developments in the field of simulation as an instructional alternative in teacher education. Six examples of simulation in preservice and inservice teacher education are described. Each description includes information on the purpose and form of the simulation, how to use it, its specific advantages and drawbacks, and whom to contact for further information. The six examples are 1) classroom simulator, 2) teaching problems laboratory, 3) Project Insite, 4) low-cost instructional simulation, 5) human relations: one dimension of teaching, and 6) inner-city simulation laboratory. The booklet discusses the general advantages of simulation and the specific advantages of using it in conjunction with student teaching, as part of the college-based teacher education program, and in inservice and graduate education. The report also outlines briefly several questions which should be considered in deciding whether or not to use a particular simulation. (RT)