The main goal of this research is to understand the problem solving activity with everyday digital technologies, within the context of a beyond school mathematical competition, SUB14. Following a qualitative approach, we observed the activity of a young student, Marco, when solving a geometrical problem, aiming at describing and analysing his activity. The results show that the digital
... [Show full abstract] inscriptions presented in the statement trigger his visualization abilities which, in turn, assume a relevant role in understanding the problem, selecting a technological tool, planning and implementing a strategy. Based on the case of this student-with-computer we discuss the role of the everyday digital tools in the activity of solving-and-expressing the problems of the competition.
Keywords: Everyday life technology; Humans-with-media; Mathematical problem solving; Solving-and-expressing; Visualization.