Química forense na escola: uma proposta de ensino contextualizado de química orgânica no ensino médio

Abstract

The present work presents a proposal for teaching contextualized with in chemistry classes. The objective was to develop a contextualized teaching proposal using the theme "Forensic Science" through an active methodology that promotes motivation and streamlines the learning of the organic chemistry contents of high school. The methodology chosen was qualitative and quantitative of the field research type, which was following the pedagogical moments with initial problematization, organization of knowledge and application of knowledge. At the first moment, the initial questionnaire was applied in order to identify the previous knowledge. Then, in the knowledge organization stage, a class on forensic science and an organic chemistry review class was given. In the knowledge application stage, an experiment with iodine vapor was applied for the development of fingerprints and the detective work: resolution of the fictitious case "Expert for a day". Finally, the final questionnaire was applied to analyze and understand the contents covered. It was possible to note that the fictitious case "Expert for a day" and the expository class with experimental practice can complement learning satisfactorily by making chemistry classes more interactive, dynamic and effective for students.