New Perspectives in Science Education

Edition 13

Accepted Abstracts

Virtual Gas Lessons for Medium Chemistry: Use of Interaction Cycles and Multi-Representation

Emerich Sousa, Universidade do Porto (Portugal)

João C. Paiva, Universidade do Porto (Portugal)


The intention is to clarify whether the learning material "Real Gases", in digital format and with use of interaction cycles (C) and multi-representation (M), would enable learning gains and increased representational competence in chemistry students of the 11th year. The interaction cycles are resources that will allow variations in the communicative approach classes, using the dialogical, authority, interactive and non-interactive dimensions. The objective is a progressive transformation of the content of discourse, from everyday ideas to the development of an empirical generalization. With the use of multirepresentation, a strengthening of the representational competences of the students is envisaged, with emphasis on the treatment and conversion of representations. The sample will be divided into four groups of more ou less 32 students each, submitted to the treatments: Web class, web + C, web + M and web + C + M. Pre-test and post-test will be used in all groups, with essay questions in the assessment. The production of text and the use of multiple modes will be analyzed, according to a previously validated script. The research focusses itself on only part of the gas content, which is a limitation. On the other hand, the understanding of some relations between aspects of the construction of discourse in science teaching may contribute, in future studies, to the extension of applicability of research to other contents and a support for future discussions in other sciences and in other levels of schooling, including higher education. Finally, it is hoped that the experience derived from this research in science education may contribute to timely discussions also in the field of science dissemination.

Keywords: Chemistry teachin; Discourse; Semiotics.


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