La gestione di un’attività del tipo PISA per bambini di 8 anni: il ruolo del mediatore semiotico

According to the main cultural aim of the PISA project, mathematics should be used as a tool to model reality and to make inferences. In this work we present an activity based on this cultural idea of mathematics and finalized to the acquirement of the general concept of proportionality in primary schools. We will observe the teacher’s role in managing the activity through the theoretical lens of the Bruner’s dichotomy between narrative and paradigmatic thought. In particular, we will analyze her use of several semiotic mediators in order to integrate the two kinds of thought.