An interactive multimedia tutorial system that focuses on the "why" aspect of user interface design is described. The system contains a design exercise, three experts for guidance, and a user group that comments on the usability of the design. Testing results indicate that learners consider more possible solutions to design issues. (Author/AEF)

Proposes a model for intelligent computer-aided education systems that is based on cooperative learning, constructive problem-solving, object-oriented programming, interactive user interfaces, and expert system techniques. Future research is discussed, and a prototype for teaching mathematics to 10- to 12-year-old students is appended. (LRW)