Ensino de Trigonometria: uma proposta de atividades online na plataforma Geogebra

Abstract

Trigonometry is a high school subject that students mostly present difficulties. Due to its importance to various fields, strategies have been sought to find approaches that could improve the teaching-learning process of this theme. The main objective of this work is to elaborate a sequence of activities about Trigonometric ratios using software Geogebra, related with difficulties of understanding the transition between Triangle Trigonometry and the Trigonometric Circle. Activities were elaborated in the Geogebra software platform and then assembled in a dynamic book available in Geogebra official site. Two activities were applied in a high school class through emergencial remote class model, gathering two classes from the 2nd year of high school from a public school of Santarém-PA. Dialogues that occurred during the meeting about the activities’ execution were registered and analyzed. It was concluded that the activities elaborated focusing on the construction of concepts, auxiliated by dynamic geometry can produce interesting possibilities to the teaching-learning process of this subject.