Transposição didática no ensino de Ciências: qualidade de água e manejo de recursos hídricos

Abstract

Didactic transposition can be an interesting tool for scientific literacy, as it allows the adaptation of real scientific research to the pedagogical environment. The objective of this work is to propose a possible didactic transposition within the theme of water quality and water resources management. To this end, the third largest water supply system of the Metropolitan Region of São Paulo (RMSP) was chosen, responsible for supplying neighborhoods in the south and southwest of the RMSP: the Guarapiranga system. According to the literature, the Guarapiranga dam shows signs of degradation of water quality, with high levels of nitrogen, phosphorus and chlorophyll a. These data point to the need for long-term structural plans aimed at solving the causes of eutrophication, as well as plans for sanitary sewage, housing and awareness. With the use of kits available in the market, students and teachers can analyze limnological variables without the need for expensive equipment and technical expertise, which makes the proposal feasible and attractive for teaching science.