Cosméticos e nanotecnologia: uma proposta para o ensino de química

Abstract

Cosmetics are formulations composed of natural or synthetic substances and intended for external use on the human body. They are widely used by the population with the aim of enhancing beauty and improving appearance, as well as for personal hygiene. With the notable and widespread consumption of cosmetics and personal hygiene products by the population since prehistoric times, it highlights the significant economic growth of this sector today, a result of scientific and technological advances. Given the relevance of this topic in a society where the search for beauty and longevity are striking characteristics, we chose to approach it from the perspective of chemical knowledge. In this work, the themes of Cosmetics and Nanotechnology were explored in relation to chemistry topics (acids, bases, pH and nanomaterials) taught in high school. In order to set up a connection between everyday cosmetics and chemical knowledge, a systematized didactic sequence was carried out in the Three Pedagogical Moments, involving the initial problematization, the organization of knowledge and the application of knowledge. This material was used in the State Education network, with third-year high school students. Data were obtained through activities and a diagnostic assessment carried out by students on the theme explored and the respective approach.