Resumo

LOCATELLI, Solange Wagner. Metacognitive strategy to rethink the representational levels involved in a chemical transformation. Ensino em Re-Vista [online]. 2020, vol.27, n.spe, pp.1590-1613.  Epub 29-Jun-2023. ISSN 1983-1730.  https://doi.org/10.14393/er-v27nea2020-18.

Through this research, it was intended to understand how eight undergraduates of a public university appropriate the representational levels by proposing explanations for the chemical transformation involved in methane combustion. For this, students had to write a text to explain this chemical reaction, as well as answer a questionnaire at the beginning and end of the process. The research was qualitative, based on discursive textual analysis for data organization, in which units of analysis were generated from the texts produced. The results indicated a prevalence of explanations at the macroscopic level, with the submicroscopic level being less considered, as well as the transition between levels, even with more experienced students. This highlights the need for a return to explanations involving the triplet from time to time for a better appropriation of this understanding, since it is not spontaneous.

Palavras-chave : Representational levels; Chemistry teaching; Chemical transformation; Metacognitive strategy; Pre-service training.

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