Abstract
The teaching of procedural skills is a fruitful area of intelligent tutoring system research. Students often learn such skills most effectively by computer when a guided discovery mode is employed. So far, no general aids to developing associated software have emerged. A domain and task representation scheme is proposed that facilitates a cognitive modelling approach to the development of discovery learning systems. It is based on a classical formalism used in AI planning and utilizes recent modifications to the technique to allow hierarchical feedback to be included, efficiency to be improved, the important distinction between domain and task to be made, and task representation to be simplified.
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