Uma contribuição ao ensino de geometria espacial.

Abstract

This work aims to contribute to the spatial geometry teaching and learning. We begin by analyzing two math textbooks for high school adopted by public schools. The analyzes of these give us a sample of how the books are about the spatial geometry. After the analysis we try to give our assistance to teachers and students, proposing the use of educational software, a plethora of polyhedra, a feature that complements the teaching and textbook aimed at making the geometry teaching more dynamic and appealing to teachers and students. We also propose, calculating the volume of two Platonic solids that are not normally found in mathematics textbooks, the dodecahedron and the icosahedron, with the use of mathematical concepts known to the students of grades of high school. We suggest and apply two lists of activities in which we used the educational software plethora polyhedra, orthogonal projections and trip-lets, which provided a very effective participation of students who responded to a questionnaire regarding the use of mathematical software in the classes that there is a time gain and a better understanding of the figures, assisting in understanding the concepts involved. Finally, in concluding report with the answers given by the students to activities, we conclude that it was valid the use of educational software as a teaching resource, presenting a very positive result.