PATN is a design for a machine problem solver which uses an augmented transition network (ATN) to represent planning knowledge. In order to explore PATN's potential as a theory of human problem solving, a linguistic approach to protocol analysis is presented. An interpretation of a protocol is taken to be a parse tree supplemented by semantic and…

This report describes the operation of a computer monitor called MYCROFT, a system which can debug elementary programs for drawing pictures. The basic skills which are fundamental to debugging skill (description, plan, linearity, insertions, global knowledge, and imperative semantics) are examined. These programs are written for LOGO turtles.…

The application of artificial intelligence (AI) techniques to the design of personal learning environments is an enterprise of both theoretical and practical interest. In the short term, the process of developing and testing intelligent tutoring programs serves as a new experimental vehicle for exploring alternative cognitive and pedagogical…