Experimentação com materiais alternativos no ensino e aprendizagem de ligações químicas

Abstract

Experimentation is a relevant teaching and learning strategy in chemistry classes to facilitate the visualization of phenomena and theory in practice, transforming the abstract into concrete. However, experimental activities are little used in chemistry teaching, mainly in public schools, due to factors related to lack of structure and resources. Thus, one of the alternatives to make it possible to carry out experiments in chemistry classes is the use of alternative materials. In this sense, in the present work, a proposal for an experiment with alternative materials for teaching and learning the content of chemical bonds was elaborated and applied, in order to investigate the contributions of the experiment in the students' learning. For this, the research was developed in a class of 1st grade of high school, at the Escola Escolar José Basson school located in the city of Cocal, taking place in three stages: application of a pre-experiment questionnaire; carrying out the experiment; and application of a post-experiment questionnaire. From the analysis of the data, positive contributions were verified in relation to the realization of the experiment for the teaching and learning of the content of chemical bonds. The research results corroborated the validation that experimental activities contribute to students' learning, in addition, the proposed experiment with the use of alternative materials aroused the students' interest, motivating them to actively participate in the construction of knowledge. Therefore, the carried out brings contributions to the area of Chemistry Teaching, especially for works developed within the theme of experimentation