Explorando a semelhança de figuras planas com o auxílio do GeoGebra e materiais concretos: uma abordagem didática

Abstract

The similarity of plane figures is a topic of great importance in Geometry, both for its various applications and for its direct relation with the world in which we live. In this sense, the present paper aims to make a study on similarity of plane figures and present didactic proposals and tools that assist in the teaching-learning process. The study was carried out with the Barão do Abiaí Elementary and High School 9th graders. The methodology used for the development of this study, in relation to the objectives, is characterized as exploratory and descriptive. As for the technical means used, it is characterized as a bibliographic research and case study, and in relation to the method of approach, it is characterized as a qualitative and quantitative research. As for the instruments used in the collection of research data, activities were carried out with the aid of the GeoGebra software, OpenBoard, concrete materials and a diagnostic questionnaire. In general, it was verified that the teaching activities proposed in this paper and the processes for the practical application of the similarity content, in addition to raising awareness, attention and motivation of the students, provided a greater interaction between them and the teacher in the classroom. It was also concluded that the discussion of practical issues and the more dynamic methodologies, such as the use of software, are efficient didactic strategies, which, if well used, contribute to meaningful learning.