Raios X no ensino médio via acesso remoto na perspectiva da aprendizagem significativa

Abstract

Advances in Information and Communication Technologies (ICT s) associated to outdated curriculum of the high school have led young students to lose their interest in scientific knowledge. In this sense, the lack of strategies teaching in the classes of Modern and Contemporary Physics (MCP), giving little or no emphasis on subjects such as X-rays, also contributes to this disinterest in science. The goal of this work is to apply a didactic sequence in a class of third year students of a public high school about X-rays. The students of the high school have made an X-rays diffraction experiment manipulated by remote access in partnership with Laboratório de Acesso Remoto Interdisciplinar (LARI) of the Universidade Estadual de Maringá associated to LIFE/CAPES project. This theme was chosen because it involves the students with a real experience in the context of modern physics in the perspective of meaningful learning of Ausubel and Novak concept maps. The sample investigated was Lithium Fluoride (LiF) and the filters were Copper (Cu), Tin (Sn), Nickel (Ni) and Plumbum (Pb). In order to analyze the experimental spectrums of the diffraction and absorption of the used materials, the students were instructed to made graphics. In this way, in our view, this work is justified due to verification of the incorporation of physical and technological concepts that facilitated the understanding of the students about subjects such as X-rays by using a real experimental set up.