Abstract
This paper describes an investigation of how children in primary schools can start to build their own models on a computer and what skills are inherent in this modelling process. The study focused on qualitative modelling using a rule-based expert system shell, Expert Builder, which made the knowledge structure and inference mechanism clearly visible to and manipulable by the user through a graphical user interface. The study was conducted within typical classroom contexts where pupils worked in groups on various activities.
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