Conceptual profiles investigation in an experimental activity on magnetic force in High School
DOI:
https://doi.org/10.5007/2175-7941.2018v35n1p290Abstract
This paper presents the development of a didactic sequence for the teaching and learning of the concept of magnetic force in a structured investigative experimental approach. It describes the design and development of an experimental prototype for measuring the magnetic force and discusses the tested settings. It is proposed a didactic transposition strategy aiming to the conceptual reasoning, using the cognitive conflict as a methodological strategy to instigate the development of conceptual profiles of the students, focused on the issue of symmetry relations of the magnetic interaction. The proposal is based on the epistemology of Bachelard and the Theory of Conceptual Profiles. The results allow us to recognize the effectiveness of the proposed methodology and the need for fostering the conceptual differentiation between the electric and magnetic interactions. The use of the prototype allows you to build concept of the right hand rule and its application in the formalization of the topic from an experimental point of view.
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