Existe ciência na cozinha: uma sequência didática para tratar o ensino de osmose celular

Abstract

The teaching of cytology is complex, challenging and it may cause rejection from students, as it presents them with new terminologies, connections and structures that are not tangible and often unimaginable in the field of optics. However, mastering this content is of fundamental importance, since cells are metabolic structures that make up the bodies of plants, animals, protozoa, bacteria and fungi. This project presents a didactic sequence for the study of cellular osmosis, based on the investigative method, in which students will be the protagonists of their own learning process, questioning, researching and building knowledge in a playful and creative manner. The idea is to investigate the historial context of the eating habits of the tropeiros (cattle drivers), who used to salt their meat for preservation, and have it as their primary source of energy. Based on this theme, students must create hypotheses about ways to desalt meat quickly to prepare their food, and reasons why vegetables could not be preserved in the same way. In addition, students must test these hypotheses and explain the processes adopted. At the end of the tests, students will create a board game, with questions and answers to evaluate their learning. It is expected that this didatic sequence promotes more significant learning about cellular osmosis in animal and plant cells, since the students becomes a subject active and participatory in solving the problem, and consequently acquisitian of knowledge regarding the topic covered.