Transformações geométricas: uma abordagem através do App GeoGebra e do site Khan Academy

Abstract

Geometry is one of the most present areas of mathematics in our daily lives, hence the importance of studying and teaching it in schools. However, this research has shown that his teaching has been neglected for years. There are indications that this situation is being reversed positively, mainly with the advent of technologies and their toolsthat collaborate a lot in the process of teaching and learning geometry. In this direction, we set as a general objective of this work the one of analyzing the performance of the students of the 9th year of Elementary School on geometric transformations in the Cartesian plane, namely, rotation and reflection, using the GeoGebra APP and the Khan Academy website. To theoretically base this research, we discussed the teaching of geometry in Brazil, in the textbooks, the relationship of the BNCC proposal with the UFPB Mathematics degree course, in addition to the discussion on the use of technologies in the teaching of geometry, highlighting the use of the GeoGebra APP and the Khan Academy website. We emphasize that the research took place in a private school in João Pessoa, where the methodology used was that of the Inverted Classroom. Two classes of 9th grade of elementary school were investigated. With this research, we conclude that the use of technologies, in the specific case of this research, the APP GeoGebra and the Khan Academy website, favored student performance and teaching mediation about geometric transformations, in addition to provoking an interest in content and the development of their autonomy.