O Ensino das relações trigonométricas no triângulo retângulo utilizando o teodolito caseiro e a metodologia da engenharia didática no 9º ano do ensino fundamental

Abstract

This work focuses on the teaching of trigonometric relations in the triangle rectangle using the homemade theodolite and didactic engineering methodology in the 9th year of elementary school. The aim of this work is to contribute to the improvement of the teaching and learning of trigonometric relations in the triangle of the rectangle using home theodolite and didactic engineering methodology in the 9th year of elementary school. The specific objectives are: to identify the stages of the teaching and learning process of Mathematics using Didactic Engineering; present the phases of didactic engineering; to relate the use of the homemade theodolite with the teaching of the trigonometric relations in the triangle rectangle. The methodological option used in this work was the qualitative research and the chosen modality was the case study. After studying the methodology of didactic engineering, construction and application of home theodolite and also the analysis of applied questionnaires, positive results were obtained in the teaching of trigonometric relations in the triangle rectangle in the 9th year of elementary school, since it facilitated student learning.