Um estudo sobre ângulos: uma abordagem didática através de atividades

Abstract

This work is a proposal for the didactic teaching of geometry. In it, we intend to combine theory and practice in teaching mathematics; in particular, in the study of angles, based on a reflection on practical activities used in classroom. The intention is to contribute with material to the teachers’ continuing education, to be applied in their classrooms by creating a proper environment for students, through practice, talk and reflection. The present work is based on an analysis of academic papers addressing the topic of geometry. In particular, it seeks to clarify why the topic of geometry is often not worked out in the classroom during the year. What are the reasons leading teachers of mathematics not teach geometry to their students; knowing the importance of their study in elementary school, which will serve as a basis for their further studies? Practical activities are described in it as well as their evaluation in order to identify its limitations, possibilities, positive and negative factors. It is a material that serves as a support for teachers when working with angles. It displays activities that students like to perform because they are practical ones. It was organized for a program contents to be worked in 7th year of elementary school. It is supported by the socio-historical theory of Vygotsky and Van Hiele’s model on geometric thinking.