5. Then the ‘mill’ is introduced as a tool to characterise and label all the
‘operations’ performed by teachers during the previous tasks (Fig. 6). The
selection and transformation of the pieces of the story would correspond to
model-based observations. The introduced inferential structure could be
considered a model-based explanation. The possible ending hypothesised when demanded would be the model-based prediction. Finally, the courses of action suggested by the teachers in order to ‘prove that they are right’ about the ending could be seen as model-based interventions.