Mathematics History and Cognitive Values on a Didactic Sequence: Teaching Trigonometry

This article summarizes the preparation and the results of a study, which aimed to evaluate the effectiveness of historical-philosophical approach in teaching trigonometry in association with the detection of cognitive values, as presented by Lacey. On this association lies the theoretical innovation of the work. To conduct the survey, we organized the activities in sequence as proposed by the Didactic Engineering, based on the history of trigonometry. The study was carried out with high school students of a public school in Londrina and it had a qualitative nature. We have concluded that the approach based on historical perspective with the observation of cognitive values expressed by the mathematics showed being effective for the learning of the Trigonometry and its incorporation into the student's knowledge.