ABSTRACT
Research in case-based design has demonstrated some capability to retrieve relevant designs and to adapt them automatically to satisfy new design constraints. However, some domains are less amenable to automated adaptation, particularly when the cases are very complex and when relationships among the design components are difficult to express formally. The design of interactive learning environments is one such domain. We describe a case-based approach to instructional software design which utilizes interactive, model-driven case adaptation. Our model for computer-based instruction is Goal-Based Scenarios. We describe a tool. Goal-Based Scenario Builder, which supports interactive adaptation of instructional software using the model, and illustrate its use in adapting an example case of a successful instructional software program, Sickle Cell Counselor.
