Tarefas para o estudo de funções seno e cosseno: uma análise de livro sob a lente do mecanismo atencional top-down e da TAD

The objective of this study is to analyze mathematical tasks related to the study of sine and cosine functions from the perspective of the top-down cerebral attentional mechanism, articulated with the Anthropological Theory of Didactics (TAD). The analysis is based on tasks from a New High School textbook in order to understand the attentional mechanisms mobilized and the mathematical praxeologies evoked in the resolution of activities involving sine and cosine functions. The theoretical and methodological framework adopted is the Anthropological Theory of Didactics (TAD), along with the minimum requirements for the development of trigonometric tasks and Cognitive Neuroscience, aiming to activate the top-down attentional mechanism. The results indicate that integrating requirements related to the attention of the top-down attentional mechanism in mathematical tasks can enhance the teaching and learning of sine and cosine functions.