Tratamento da água: uma proposta inovadora para abordagem do conteúdo reações químicas

Abstract

The goal of this study was to seek, of a simple and everyday way, a thematic axis that could stimulate the interest and to facilitate student's learning in conception and in the chemical knowledge, trying "to break" this existing version regarding the Chemistry discipline. The educational proposals of the young people and adult should search to address the teaching, for the formation of a subject more participate, critic and acting in the society. A critical education carries to a worthy and just life, that is, prepares itself for life, through of the problems resolutions search of day by day, of the experiences change, building and reconstructing new knowledges through of this inter-activity. Water used to the domestic consumption should introduce characteristics of potability, that is, should be exempt of pathogenic organisms (former. bacteria, virus, parasites, protozoons), and exempt also of toxic substances, which are harmful to the human organism. These diseases transmitted by water can be easily controlled with cleanliness existence adequate basic. The study of the chemical reactions and the treatment of water came to enable a students' reflection, in the sense of seek new ways and improve your dealings regarding conceptions about learnt chemical reactions and to the developed. Of this way, it can adopt new and productive experimental activity demonstrating the how much is joyful to teach and learns chemical.