The development of motion visual instructional messages should proceed according to systems principles. This would permit the creation of more effective visual messages, allow educators to use more effectively the various media as communication tools, and assist in the refinement of the instructional development process. Like any system, a system…

Proposes a framework to help course developers design criteria for optimal media deployment. The merits of radio, television, audio, video, and print are briefly compared with computer-based media and analyzed in light of six types of media characteristics: symbol system, access, controllability, student reactivity, interactivity, and adaptivity.…