Alunos surdos e o uso do software Geogebra em matemática: possibilidades para a compreensão das equações de 2º grau

Abstract

The present study has as theme the deaf students and the Geogebra software use. This dissertation was developed in the Mathematical Education Master Program of the Federal University of Pelotas, was constructed from the reflection of the teaching practice with deaf students, after finding of the learning difficulty and of the lack of adequate methodologies for these students in Mathematics; with emphasis on the lack of meaning in the teaching of the second degree equations. The students, members of a deaf culture, use the Brazilian Sign Language (LlBRAS) to communicate. The theoretical contributions used have served as a basis for establishing an ordering of the conceptions of several authors related with deaf education, mathematical learning, meaningful learning, technologies, and other. The methodology used was qualitative directed to a Case Study. The data collection took place through observations; daily notes, photographs, videos, drawings and testimonials. The data collected were treated by dialectical analysis. We tried to analyze the possibility of using GeoGebra software as an auxiliary tool to better understand the concepts and resolutions of the second-degree equations in a bilingual context for deaf students. In order to facilitate the learning of these students, we used tools that contemplated visually, as Visual Pedagogy, with the support of constructivism and significant learning. The work was developed in a deaf school with a class of four students of the ninth grade of the Elementary School during 15 meetings. First, was made the familiarization with the software and the revision of the first-degree equations, followed by a practical contextualization in a sports court to later use the GeoGebra software and the analysis of the graphs of the second-degree equations, in order to understand the coefficients, the concepts of the equations and resolution. Finally, occurred the application of the equations and the development of activities with the participation of the students in the exhibition of school works. The analyzes showed that the methodology can be considered positive, meeting the objectives. This study has evidenced the possibility of using this proposal with groups of deaf people allowing that new studies can be carried out and extended on this theme.