Discusses the best-known examples of slow-scan television; its development; its relationship to other types of visual media; its effectiveness as an instructional method; its use in teleconferencing; slow-scan television systems and their uses; factors of slow-scan picture quality, frame frequency, and bandwidth; origination and display…

Discusses use of computer graphics to enhance instruction presented via audio-teleconferencing in University of Calgary distance education courses. System design is reviewed; instructional roles of the graphics utilized are discussed; and development of two inservice teacher education courses used to assess the system's effectiveness is described.…