A aprendizagem da geometria analítica do ensino médio e suas representações semióticas no GrafEq

Abstract

This thesis presents the design of a master's research involving students of the third year of high school, which has as its objective understanding the concepts and properties of Analytic Geometry using GrafEq software in high school. It is a qualitative research, and the methodology adopted for teaching and research is the Didactic Engineering, which allows the systemization research in theoretical and experimental fields. The activities deal with the straight, circumference and parabola objects, and were made with a group of students from a school in the city of Santa Maria / RS. As a theoretical framework, the Theory of Semiotics Representation Registers from Raymond Duval has been adopted due to the important role of representations in the understanding of mathematical concepts. Aiming to facilitate the coordination between the graphic and algebraic representation registers of Analytic Geometry, activities in the teaching sequence were designed using the GrafEq software, allowing the student to perform many activities involving these records. In some activities, GeoGebra software was used in order to formalize properties and mathematical results. The main results emphasize the recognition of the covered objects in their different registers of semiotic representation, considered a priority condition for their understanding. The activities in the sequence contributed for the recognition and understanding of relevant visual variables of algebraic records objects. It has been found that, in general, the development of students beem found along the dynamics of the didactic sequence, it means an improvement in the mathematical objets understanding approach. The engagement of students in solving activities has been emphasized along the activities.