Discusses the process of designing a series of case-based interactive videodiscs to be used within a constructivist learning environment for elementary school science. Topics include assumptions about learners and learning; implications for learning materials; and implications for the instructional design process, including process-based versus…

Reviews case study that was conducted at the University of Florida to determine the effectiveness of a model for designing televised instruction. The use of focus groups to analyze and compare televised instruction is described, and quantitative and qualitative evaluations of the experimental and control videotapes are discussed. (LRW)