Sequência didática para o ensino de ácidos e bases: da experimentação ao jogo numa abordagem contextualizada

Abstract

The aim of this research was to evaluate the contribution of a didactic sequence for the learning of students in the teaching of acid functions and bases, in which experimentation and a game in a contextualized approach were used. The methodological approach was qualitative of an interpretative nature, with participant observation, of its applied nature. Twenty-six students participated in the study, from the first grade of high school, of the morning term, of a state school in the Southern Center Region of Paraná, Brazil. The data analysis was carried out, from categories, and subcategories, stratified of the content of the students' answers, in the MAXQDA program. The analysis and interpretation of the data were obtained from the development of the didactic sequence, which integrated different activities, in eight moments, articulated from a problematizing experimentation, to a didactic game, in a contextualized approach. It indicated contributions of problematizing experimental activity, as an efficient strategy, for problematization, contextualization, and the stimulation of research questions. It made possible the accomplishment of discussions, reflection, registers, and hypotheses about the subject, which were fundamental for data generation, regarding the initial conceptions of the students about acids and bases. It aroused the curiosity of the students for the experimental events, causing them to act as protagonists in the construction of their knowledge in the search for answers in a scientific attitude. The development of the elaborated didactic game unanimously stimulated students' motivation, enhanced interest, curiosity and active participation in activities, improving students’ relationships and as consequence a conceptual, social and emotional evolution has arisen. In general, the didactic sequence contributed to the students establishing relationships between the scientific contents of acids and base and their context, being instigated in the search for knowledge. Thus, it was possible to observe contributions in the dimensions of conceptual, procedural, and attitudinal scope, foreseen in educational intentions.