Contribuições do uso de atividades experimentais demonstrativas para as aulas de Física de uma sequência de potência elétrica

Abstract

This dissertation analyzes the contributions of using experimental demonstration activities for learning concepts of physics. The activities were developed within a school on electrical power sequence, and applied for a physics professor in a class of 3rd year of high school in a public school. The lessons of didactic sequence were videotaped and transcribed afterwards. Data analysis is anchored in the three theoretical constructs proposed by Wertsch: situation definition, intersubjectivity and semiotic mediation. Such concepts allow a better understanding of Proximal Development Zone proposed by Vygotsky, providing a framework for teaching practice. We believe that the use of experimental activities in a didactic sequence contributes both to the involvement of students in the classroom and to better students' gaze direction for the relationship between observable data and scientific model.