All chapters have been updated, some extensively. New chapters include those on programmed instruction, everyday cognition and situated learning, ecological psychology, internet-based learning, library media centres, foreign language labs, microworlds, automated instructional design, cognitive apprenticeship, case-based learning aids, and conversational analysis. All articles are organized around a numerical cross-referencing system that permits the construction of front-end databases, hypertexts, and summaries. The handbook is intended for graduate students, professors, instructional designers and researchers in educational communication and technology.