Um recorte do ensino de geometria espacial em uma perspectiva sócio-crítica utilizando a temática embalagens de leite

Abstract

This paper presents the report of an experience developed with students of the third year of High School in a public school of Canoas, located in the metropolitan region of Rio Grande do Sul state. The purpose of this practice was to establish relations between the elementary concepts and characterizations of polyhedral surfaces, so as to connect theory and different types of packaging of the same product, the study of spatial geometry. It was built a didactic sequence contemplating the investigation of the advantages and disadvantages of changes in milk packaging, analyzing and critically reflecting these changes. The methodology used in the research was the Mathematical Modeling for it allowed a learning environment in which students had the opportunity to carry out investigative work which established the relationship between mathematics and reality. It is understood that, based on the investigation and reflection, it was possible to build on with students the concepts of area and volume of prismatic solids in a contextualized way, making them express their thoughts on this research and its reflection. It is believed that students established relations between the shape of the packing and the final cost and thus acquire necessary support for decisions, while customers when purchasing products in relation to the choice of packaging.