Publication Details (including relevant citation information):
BUENO FILHO, M. A.; NAVARRO, D. N.; LOPES, E. C. D.; NASCIMENTO, M. G.
10th biannual Conference of the European Science Educ. Research Assoc., 2013, Nicosia, Cyprus
The construction of submicroscopic representation has been pointed as a source of alternative conceptions by college students as well as basic education. Besides the algorithmic procedures, the difficulties are related mainly to the nature of submicroscopic events that require conceptual abstraction. This paper aims to access details about the construction of submicroscopic representation in undergraduate students based on Conceptual Fields Theory Gerard Verganud. We prepared an instrument that students should position themselves in relation written about Chemical Equilibrium and Electrochemical Processing. In a second time, were invited to present their arguments orally freely. Data were recorded on video and submitted to Textual Analysis Discursive with the help of software Transana. Were extrapolated six operational invariants for the chemical-equilibrium state without three shared with the situation that was about electrochemistry. The data suggest that good performance at this level of representation should not be understood as disconnected nature of the topics in question - chemical or electrochemical balance - but the operative quality of the justifications used by the subjects. We understand how those justifications operative associated with the concepts-in-action within the meaning of Vergnaud.
Address (URL): http://pesquisa.ufabc.edu.br/pecq/wp-content/uploads/2014/01/ESERA-3-Electrochem istry-and-chemical-equilibrium-the-dynamics-of-submicroscopic-representation-dur ing-the-action-of-subjects.doc