Work in progress - computational and cognitive representation of the knowledge during computer- based training

This paper presents a work in progress whose purpose is to model the handled, acquired, correct and erroneous knowledge of individual learners engaged in learning activities through virtual learning environments. This knowledge is represented according to a cognitive-computational model which also serves to represent the domain knowledge via an authoring tool. The latter generates structures that allow the tutor to provide an effective feedback to improve significantly the cognitive level of the learner