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…

Effective use of visual illustration entails consideration of specific instructional purposes, method of presentation, student characteristics, type of objectives, and cuing techniques. (LS)

Describes a series of studies of fourth graders that investigated the cueing effectiveness of seven variables for use with visual information. Contrasting cueing strategies that were tested are described, cueing effects on average and below average learners are discussed, and tentative guidelines for instructional designers are suggested. (35…