This digest discusses the nature of interactive videodiscs and their educational applications, provides information about educational uses of videodisc technology, and presents lists of videodisc-related organizations, books, and periodicals. A general description of a reflective optical laser videodisc is presented, as well as the equipment necessary to use a videodisc program. The categorization of videodisc systems according to their level of interactivity is explained: (1) Level 1--a stand-alone videodisc player which may allow dual audio and random access of frames but has no memory or processing power; (2) Level 2--a stand-alone educational/industrial player allowing disc control through an internal programmable microprocessor; (3) Level 3--a system which adds the power of an external computer through the connection of an interface device; and (4) more sophisticated systems which have capabilities far beyond those of the original Level 3 system. Educational uses of videodiscs are also discussed, including simulating expensive or dangerous procedures or human interactions; teaching standardized procedures; storing audiovisual databases; showing visual details and reviewing and comparing visual materials; and using the two audio tracks to store different information for foreign language instruction, or for adapting materials for varied ability levels. Finally, several educational projects that are experimenting with the principles of interactive video are described, and resources for learning more about videodiscs in education are presented, including three organizations, three books, and several periodicals. A list of references is also provided. (JB)