O plástico que virou comida: uma sequência didática utilizando estudo de caso para o ensino de química

Abstract

The case entitled “the plastic that became food” has as a socio-scientific approach the environmental impacts caused by plastic waste in the seas and its consequences for human health. The didactic sequence that involves a case study was developed from narratives, with problem situations experienced by society, having as solutions the students' socio-scientific knowledge, which promoted the correlation of everyday facts with the chemistry content learned in classroom. This didactic sequence was applied in 3 classes of the third year of high school, with the participation of about 50 students from the ECIT school in the city of João Pessoa-PB. For elaboration, the stages of case conception, lesson planning, activity elaboration, execution and evaluation were carried out, with the objective of proposing and applying a Didactic Sequence that involves a Case Study for teaching polymers linked to environmental problems caused by microplastics. The activities took place in five meetings and throughout the interventions at the school, there was a greater engagement and participation of the students and positive comments by the Teachers, which leads us to reflect on the strength of the methodology employed, in addition to providing meaningful experiences for the teacher training.