Understanding mathematical work and mathematical thinking through individuals' actions analyses: a networking approach

International audience ; The theory of Mathematical Working Space (ThMWS) provides theoretical and methodological tools to describe and characterize mathematical work. A particular methodology has been developed to analyse actions produced by subjects when they perform mathematical tasks. In this paper, this methodology is introduced by an example of a geometrical task. Then, we show how two theories on knowledge construction based on actions were combined with ThMWS. Finally, we present the contributions drawn from these networking cases which provide insight into mathematical work as well as the thinking of subjects by articulating their knowledge and actions.