Invariants opératoires mobilisés en électromagnétisme et schèmes associés : une étude de cas chez les étudiants du premier cycle universitaire
Abstract
This paper deals with the way students in their second year at the university work with the concept of magnetic field and with the associated concepts, in different situations. We present the operational invariants and schemes implemented by the students, referring to the conceptual field theory (Vergnaud 1990)
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