The small-group process is discussed in relation to its use as a teaching method; the objections to and advantages of small groups are enumerated, and numerous group interaction diagrams are listed. Also, various exercises and guidelines for successful group application are presented. A final section is devoted to the different kinds of groups and their special application to certain teaching methods and subject matter. Groups listed are the open-discussion group, the tutorial group, the assigned-roles group, the research group, the task flexibility group, the investigative group, the heuristic mode, the group talk model, the brainstorming group, the socratic-analysis group, the value-clarifying group, and the colloquium. A small group bibliography is included. (JB)