Critérios de seleção de tarefas para a sala de aula dos professores de matemática

In this article, we address the task selection criteria that mathematics teachers bring into play during class planning. To do so, we gathered the proposals that, from different perspectives, have been made in the literature on this issue and established a first version of a frame of reference. Based on self-reports from a group of teachers and grounded theory, we complemented the initial framework and proposed a new frame of reference. The new framework includes categories related to motivation, tasks’ difficulty, teachers' professional commitments and temporality.