O uso de materiais manipuláveis no ensino de trigonometria nas aulas de matemática do 9º ano

Abstract

Trigonometry is an area of Mathematics that works with understanding the relationships between angles and sides of triangles, with didactic teaching taught at the end of Elementary School, specifically in the 9th year. This research aims to offer methodological elements that contribute to the teaching and development of Trigonometry in the Mathematics discipline. Furthermore, it seeks to reflect on the importance of teaching Trigonometry at this educational level, analyzing its provision in the National Common Curricular Base (BNCC) and in the Curricular Document for Goiás (DC-GO). Additional emphasis is given to the proposal to use manipulative materials as a teaching strategy for teaching Trigonometry in the 9th year. The research raises the issue of the challenge in teaching Trigonometry, highlighting the difficulties encountered by students when faced with concepts such as trigonometric ratios and trigonometric circle. The study will employ the qualitative research method, using documentary and bibliographic analysis as the main tools to achieve the proposed objectives. The analyzes will focus on official educational documents, such as the BNCC and the DC-GO, aiming to identify and understand how Trigonometry is proposed in these documents for Elementary Education. In addition, a bibliographical survey will be carried out, searching for references and studies that address teaching strategies and teaching materials aimed at the effective understanding of Trigonometry by 9th year students.