Trigonometria no triângulo retângulo com a mandala trigonométrica: uma proposta lúdica e interativa

Abstract

In the current educational context, it is evident that high school students face difficulties in learning trigonometry, especially in understanding concepts such as arcs, angles, sine, cosine, and tangent in the trigonometric circle. Therefore, the objective was to evaluate the impact of a didactic intervention based on the use of the Trigonometric Mandala game in the teaching of trigonometry. This is a study with both quantitative and qualitative approaches. The Trigonometric Mandala game was presented by students from the Institutional Program of Teaching Initiation Scholarships (PIBID), linked to the Mathematics Degree Program at the Federal Institute of Piauí (IFPI), Floriano Campus. The research was carried out at the same campus, with the participation of 50 students from two second-year classes of the Integrated High School with a technical course in Building Construction. The procedures were developed from a short course on Trigonometry, and data collection techniques included a pre-test and a post-test. The analysis of the results was presented in graphs and tables and discussed according to relevant literature. The pre-test revealed low grades, indicating the need for strategies to improve learning. With the implementation of the short course, an increase in the participants’ averages was observed, indicating that the use of the game positively influenced academic performance. In the final questionnaire, 52% of students reported a considerable improvement in understanding the content, while 42% indicated partial improvement. The results were positive, showing a significant enhancement in the understanding of trigonometry concepts.