Proposição de sequência didática focada em nanotecnologia sob a perspectiva de educação ciência, tecnologia, sociedade e ambiente

Abstract

The present work aims to discuss the proposal of a didactic sequence focusing on nanotechnology/nanoparticles from the perspective of Science, Technology, Society, and Environment (STSE) education, in order to stimulate students’ interest in science and promote critical thinking about new technologies that emphasize Modern and Contemporary Physics. To develop the didactic sequence, the main concepts, methodologies, and didactic resources were mapped from two literature reviews: the first from a broader perspective, and the second focused on nanotechnology. Following the review, the proposed didactic sequence incorporates the key aspects found, such as experimentation, use of information technologies, problematization of the theme (nanopollution and access to nanotechnology), connections to daily life, questionnaires, critical perspective on new technology, interdisciplinarity, and alignment with official documents. The didactic sequence introduced the topic of nanotechnology with a focus on silver nanoparticles, including their production through chemical synthesis, and two experiments: observation of the photothermal effect and evaluation of the absorption and transmission spectra of the nanoparticle solution. Through these demonstrations, it is possible to qualitatively show the visible light spectrum. The work also includes alternatives for potential issues related to materials and chemical compounds used in the experimental activities.