RULE-BASED FLEXIBLE CONTROL OF TUTORING PROCESS IN SCENE-ORIENTED CAI SYSTEMS.

Working from current omputer-aided instruction (CAI) systems, the authors developed the MASTERS intelligent CAI system with a general-purpose CAI control method using a production system. Two objectives were sought: (a) enabling scene display controls flexible enough to be matched to the level of understanding and characteristics of the individual student; and (b) mounting all the teaching material on a database and simplifying reuse of the scenes. In order to achieve these objectives in MASTERS, the required teaching knowledge was established as production rules and used to control scene display. Various solutions discovered to a number of problems occuring with this approach are discussed.