Biossensor como proposta alternativa para o ensino de eletroquimica

Abstract

We report an investigation directed to the speeches that occurred as the students of the 3rd year of high school in a public school located in the neighborhood of Santo Amaro / Recife-PE, aiming to analyze the biosensor theme as a didactic proposal complementary to the teaching of electrochemistry. For that, a sequence of activities involving diagnosis, expository class, and dialogue, experimentation, contextualization and problematization were elaborated. Results showed that it is possible to work with the biosensor theme in high school to encourage students to use scientific knowledge. The students who presented difficulties in understanding the chemical concepts of oxidation / reduction and pile after didactic strategies used is a result that is acceptable because the contents involve the principles of electrochemistry have often been pointed out by teachers and high school students as one of the issues that represents great difficulties in the teaching-learning process. Due to the good performance of the students who were willing to participate in this research we can consider that the proposal proved to be a useful strategy for the production of answers and explanations about the knowledge of the principles of electrochemistry. Even for the students who did not reach the understanding of this content, the results indicated that actions like this can be a tool that helps the students to become aware of how they understand the difficulties involved in the concepts of electrochemistry issues.