Concept-Flow Diagrams: Method for Design of Computer-Aided Instruction

摘要

Current software design techniques are organized around either datatransformation or stimulus-response control flow abstractions. Neither of these approaches apply to the flow of presentation and answer analysis that characterizes computer-aided instruction. This thesis introduces a new design abstraction, concept-flow, and technique that exploits it in the design of tutorial software. The design technique uses concept-flow diagrams, which highlight presentation of information and verification of user comprehension. The technique is explained through application to a tutorial on the physics of underwater sound. The design and implementation of a prototype concept-flow interpreter are presented. This design technique and the associated interpreter allow for rapid construction of highly flexible computer-based tutorial strategies, useful for both traditional CAI applications and for more efficient help-sequence design in interactive systems.