Resumo Por se tratar de uma ciência amplamente aplicada nos ramos tecnológicos, é essencial que a física seja ensinada a partir de demonstrações dos fenômenos e com relações entre teoria e prática. No entanto, por diversos motivos, os professores optam por aulas puramente expositivas. De maneira geral, verifica-se que, dessa forma, os alunos não se interessam pela disciplina e absorvem o conhecimento de forma mecânica. O presente estudo objetivou a construção de um produto educacional de baixo custo, utilizando a plataforma Arduino, para demonstrar a relação entre as variáveis de estado de um gás ideal em aulas do Ensino Médio. Os resultados demonstraram que, mesmo com materiais simples, é possível a construção de um aparato experimental capaz de extrair dados quantitativos e sua utilização em aula pode contribuir na construção do conhecimento de forma potencialmente significativa.
Chemistry and Physics teachers often deal with lack of interest from the students in the classroom. This fact is frequently related to the way the classes are taught since, there are many difficulties, teachers set aside the contextualization and they do not do the relation between theory and practice. In the present study, it was checked the teachers' practice in the high school, involving thermodynamics having as an educational tool a simulation experiment of a steam engine. All the approach was contextualized with the Ausubel's Theory. The proposed methodology was applied in 2017, in Tubarão, Santa Catarina, in a private school. Tests and surveys were made with the stundants in order to verify the study's impact into de learners. The results achieved demonstrated that, because they are applied sciences, chemistry and physics must be worked through an active teaching methodology. Therefore, teaching of thermochemistry in an interdisciplinary way with the study of steam engines presents a gain, in terms of interest and performance on the part of the students, in relation to the traditional method of purely expositive classes.
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