A emissão de poluentes oriundos da queima do carvão mineral: um estudo de caso para o ensino de química contextualizado

Abstract

The following Completion of Course Work aims to describe an application of case study resolution methodology, approaching the issue of environmental chemistry in the class room. This intervention occurred in two classes of 2nd year of public high school in the cities of Bagé and Candiota, located in the state of Rio Grande do Sul. The activity occurred through the application of a case study related to questions about the emission of pollutants because of the burning of coal of a thermoelectric power plant present in the region, with emphasis on pollutant sulfur dioxide (SO2). Our work used tools that have enabled the construction of knowledge by the students in the process of resolution of this case study, such as the use of investigative questionnaires, experimentation, local reporting and presentation of a seminar. We know that is very important to promote the use of investigative cases in the class room, bringing social, cultural, economic and environmental issues, which were covered with the use of our main issue. As a result, we believe that this methodological proposal has contributed to the development of a critical positioning in our students, awareness development and the ability to integrate scientific knowledge forward to real problems, favoring the teaching-learning process.