Curriculum developers must work hard to avoid the "what errors" of curriculum development. They must avoid failing to teach what should be taught and teaching what is no longer relevant and needed. Curriculum "what errors" are likely to occur when teachers design courses so as to teach what they know best, what they were…

Reviews problems with research in determining the effectiveness of distance education, and presents a systems model to be used as a framework upon which researchers can build. The telecommunications in instruction model incorporates learner variables, instructor variables, presentational elements, course content elements, and distance education…