Sequência didática investigativa: uma atividade experimental sobre vitamina C

Abstract

The main purpose of this study is to understand the contributions of inquiry-based science teaching in the appropriation of an experimental activity about the presence of vitamin C in ready-to-drink juices sold in the market. In order to achieve the proposed objective, a qualitative research was carried out by means of action research. The active methodology, known as rotation by stations, was applied so that the theme of vitamin C could be contextualized and, furthermore, so that the students could understand about its use by the food industry. Moreover, an expository and dialogical class was applied to address the fundamental concepts for the subsequent appropriation of the experimental activity. Finally, the development of the experimental activity through the iodometry technique. This test is based on a chemical reaction that occurs between iodine and ascorbic acid (vitamin C). The activities developed with the proposed theme proved to be successful, because the students were participatory and motivated, which was probably a facilitating agent for the understanding of the content studied.