Ensino de química: a teoria aliada a experimentação no 2º ano do ensino médio de uma escola pública em Goioerê-PR

Abstract

Chemistry is an instrument of human development being considered a means to interpret reality and interact with it, but is stigmatized by society because of the degree of difficulty. Facilitating the teaching-learning process can be aided through teaching tools, which include techniques for greater understanding of the contents, among them we can highlight the laboratory experimentation. The objective of this work is to emphasize the importance of practical activities linked theoretical activities in the discipline of chemistry, evaluating the vision of students as the level of learning. The study was conducted between the months of June and July 2015, in one of the public schools in the municipality of Goioerê-PR. Activities included the use of lecture and practice to the 2nd year of high school students, addressing the topic of acidic and basic substances, where theoretically it is expounded the contents and then practically ranked commercial substances in acid and base by colorimetry provided by red cabbage indicator. The results were satisfactory, as demonstrated the need to combine teaching techniques in order to stimulate the learning process. We conclude that in disciplines of science area is necessary to use different teaching techniques, so as to bring students from reality and implement an effective knowledge.