Discusses the nature and current state of knowledge-based systems and expert systems. Describes an expert system from the viewpoints of a computer programmer and an applications expert. Addresses concerns related to materials selection and forecasts future developments in the teaching of materials engineering. (ML)

Contends that the major use and promise of computer aided learning (CAL) lies in the provision of secondary teaching support such as simulations, interactive tutorials, and similar activities. Reviews the uses and benefits of CAL in demonstrations, experiments, exercises, and interactive tutorials. (ML)