Repensando o ensino de análise: reações, impressões e modificações nas imagens de conceito de alunos frente a atividades de ensino sobre sequências de números reais

Abstract

This paper introduces a debate about the way the subject Analysis has been developed for some time now, using researches involving the teaching and learning process to make this discussion. Studies about the theory of Concept Imagens and Concept Definition, both found in the Advanced Mathematical Thinking line of research, will be used as theoretical background. A field work will be also presented, aiming to verify and analyze the changes in the concept images of Licentiateship in Mathematics students, during an application of teaching activities over sequences of real numbers, on the Analysis perspective. Through a qualitative analysis, a reflection on the implementation of educational activities could be performed, considering the whole process and even the attitude of students at facing the activities. Other points discussed in this study were the reactions and impressions of students when facing this subject and how they deal with the formalization of contents, which is perhaps the main purpose of it and what distincts Analysis from the Calculus subject. The principal proposal aimed is to let students think about the issues involved and build results on their own. The interventions made by the researcher intended to guide them in the resolution process or in an extreme point, after having already exhausted their discussions and orientations, to present them the results. Thus, we intend to explore the various representations that a mathematical object can take. Therefore, we seek during the realization of activities suggest to students and encourage them to use the graphical representations (number line or coordinate plane), so they could relate them to algebraic representations. In addition to this previous objective, we strive to provide a favorable environment for the understanding of formal statements, which is usually memorized by the students.