The graphing calculator as an instrument of semiotic mediation in the construction of the function concept

Abstract

UID/CED/02861/2016According to some authors, the graphing calculator facilitates the students' ability to reflect and generalize, when involved in performing exploratory tasks, leading them to the construction of mathematical knowledge (Doorman, Drijvers, Dekker, Heuvel-Panhuizen, Lange e Wijers, 2007). We present the resolution of the task: "My hand", with the graphing calculator, whose purpose was to consolidate the concept of function and to understand when a cartesian graph corresponds to the representation of a function. On the other hand, looking at the artifact, the graphing calculator, as a instrument of semiotic mediation, we intend to analyze how the transition from personal meanings to mathematical meanings (Mariotti, 2018) was developed, in the resolution of the task.publishersversionpublishe