The teaching of metals with a CTSA approach in high school.
Teaching Chemistry, Metals, CTSA
We live in the era of globalization, with technology facilitating people's daily lives. However, if on the one hand the machines are available for the most varied purposes, on the other hand, new demands for energy and raw materials arise, and consequently the worsening of environmental issues (RICARDO, 2007, apud FAVILA, ADAIME, 2013, p 2866). The modern world is increasingly artificial, in the sense of human intervention, and there is a growing need for scientific and technological knowledge to make common, individual or collective decisions, although this influence is not always clearly perceived by everyone. Young people, in particular, are constantly interacting with new consumption habits that are direct reflections of current technology. Paradoxically, they do not receive training in science and technology at school that goes beyond information and merely illustrative or motivational relationships between these fields of knowledge. Even when there are innovations, which seek to bring students closer to the functioning of things and technological issues, other dimensions of the artificial world and the understanding of its relationship with daily life are still absent. (RICARDO, 2007) The way in which chemistry contents are “transmitted” in the classroom has contributed almost nothing to the personal and social life of students, as it has often become “important” only for students. those who will compete for a vacancy in the entrance exam, that is, it does not prepare them for a civic life. To change this situation, it is necessary to prioritize, in the teaching of chemistry, the active participation of the student, integrating him during the teaching and learning process (FIGUEIREDO, RODRIGUES, 2014). Seeking to break with the traditionalist model based only on the transmission and reception of contents, a very efficient alternative emerges, which is the use of the CTSA (Science-Technology-Society-Environment) approach in the teaching of Chemistry, which seeks to establish relationships between scientific knowledge, the technology, society and the environment (ROCHA, I. G. et al). Contextualized teaching had its official origin with the Science, Technology and Society Movement - CTSA, in the seventies, due to the growing development of science and technology. More recently in the nineties, the concern with environmental issues and their relationship with Science, Technology and Society gave rise to the movement Science, Technology and Society and Environment - CTSA (MARCONDES, 2009, apud FAVILA, ADAIME, 2013). According to the CTSA, this dissertation addresses the teaching of metals from the perspective of science, technology, society and environment. Proposing knowledge about metals, relating everyday life with the four points, C (science), T (technology), S (society) and A (environment).