| Summary: | Nesta dissertação apresentamos o relato de uma proposta de inovação na abordagem da Física para o Curso Técnico em Radiologia Médica – Radiodiagnóstico, do Colégio Cenecista São Roque, localizado em Bento Gonçalves/RS. Motivados pela carência de trabalhos direcionados ao ensino técnico e pela necessidade em tratar a Física Moderna de modo mais conceitual, nos propusemos a elaborar uma página na internet como instrumento de apoio à disciplina de Proteção Radiológica. Considerando como marco teórico a teoria sóciointeracionista de Lev Semenovich Vygotsky e visando uma maior conscientização dos alunos quanto aos efeitos biológicos das radiações, adotamos como conceito central a dualidade onda-partícula. Tal referencial teórico considera como elemento fundamental para a aprendizagem a interação em sala de aula e dessa forma procuramos direcionar nossas aulas de modo a incentivar o debate. Os materiais didáticos desenvolvidos e adaptados para nossa prática constam de roteiros exploratórios, simulações computacionais de fenômenos físicos e leitura de textos de divulgação científica. Utilizando como ferramenta simuladores Java Applets disponíveis na internet, foram explorados os efeitos fotoelétrico e Compton. Através de um software educacional, desenvolvido no Instituto de Física, que simula o interferômetro de Mach-Zehnder abordamos o caráter dual das radiações. Este modo de abordar a Física despertou o interesse dos alunos levando-os a participar mais das aulas e a fazerem relações dos conteúdos estudados em sala de aula com os fenômenos físicos que regem o radiodiagnóstico. === In this dissertation we report an innovative approach in teaching Concepts of Quantum Physics to a technical level course in Medical Radiology, namely Radiodiagnostic at Colégio Cenecista São Roque in Bento Gonçalves/RS. The main reasons for this work are twofold: first, there is a small number of papers in the literature concerned to technical teaching and even less in this field specifically. Second, the students are required to get some conceptual understanding of Quantum Physics - an abstract subject most of them has never heard before. We have chosen the wave-particle duality as a central concept to introduce Quantum Physics given that analogies with classical wave mechanics could be more easily recovered. The dual character of electromagnetic radiation and the probabilistic nature of Quantum Physics were then emphasized since these concepts are fundamental for a better understanding of biological effects of radiation. It is also important to clarify Physics is part of our everyday and that even many of the norms that will rule their professional lives are based on the actual scientific knowledge. We believe better prepared technicians will be professionals more conscious of the importance of their own role in society. Working within Lev Semenovich Vygotsky framework we have fomented and motivated the learning through interaction among students in the classroom and through the debate among them. We have also elaborated a homepage during the semestre as a support tool to the discipline of Radiological Protection. Texts, interesting links, related news from newspaper have been continuously added as the students were suggesting or asking for. Besides the homepage, we have elaborated specific didactic material like exploratory scripts to guide the students through virtual simulations as for the Wave-particle duality in the Virtual Mach-Zehnder Interferometer and for the Photoelectric Effect. The students in general showed themselves very receptive to the innovations since they could be more active during the classes. Their final comments are interesting and they can give hints where this approach can be still improved and what they like it most.
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