Recebido em 3/5/11; aceito em 19/8/11; publicado na web em 30/9/11 THE EXPERIMENTAL WORK IN THE CHEMISTRY TEACHING. This article deals with conceptions of the experimental work in the Chemistry teaching, developed among teachers and students. The research was carried out using qualitative methodology, based on Gaston Bachelard's thoughts. The results showed dispersion of conceptions among both students and teachers. This dispersion, interpreted as a profile of conceptions, was discussed based on the notions of Bachelard's epistemological profile and Mortimer's conceptual profile. This work points out the need to rethinking and finding new directions for experimental activities in the training courses for Chemistry teachers, in order to meet Chemistry educators' social goals.
Resumo: Apresentam-se alguns elementos da epistemologia histórica do filósofo Gaston Bachelard para a discussão de aspectos relativos ao ensino de Química e à formação do educador químico. Com base em alguns aspectos relativos ao processo de produção da ciência Química, procura-se mostrar como determinadas concepções epistemológicas, como o realismo ingênuo, o substancialismo e o racionalismo clássico, foram historicamente superadas e, no entanto, ainda estão presentes no ensino de Química. Nesta perspectiva, o artigo apresenta alguns conceitos da epistemologia bachelardiana, como o de polaridade epistemológica, vigilância epistemológica e perfil epistemológico e os insere em questões que têm sido, atualmente, discutidas para o ensino e a formação do professor, com destaque para a noção de perfil conceitual de Mortimer e sua utilização como recurso didático no ensino de ciências.Palavras-chave: Ensino de Química. Formação do professor de ciências. Concepções epistemológicas. Abstract:In the present article some elements of Gaston Bachelard's historical epistemology are presented in order to discuss some aspects regarding chemistry teaching and chemistry teacher education. Based on some aspects related to the production process in chemical science, we aim to show how specific epistemological conceptions such as naive realism, substantialism, and classical rationalism were historically overcome; however, they are still present in textbooks and chemistry manuals. With this in mind, this article presents some concepts of bachelardian epistemology, such as epistemological polarity, epistemological surveillance and epistemological profiles and inserts them into questions which have been recently discussed for teaching and teacher education, emphasizing Mortimer's conceptual teaching profile and its usage as a didactic resource in science teaching.
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