Problema de Castillon

Abstract

In this work, our proposal is to introduce a methodology that helps the professor of mathematics at the consolidation of high school students of the contents, since many of them lack the knowledge necessary for learning mathematics. We present a solution to a famous ancient geometric problem, the Castillon problem. We will use the strings of knowledge on the circumference of the secant theorem, tangent theorem, angles between parallel and parallelism between straight for the construction of the solution. With the help of Geogebra dynamic geometry software, we propose a roadmap for the construction of the solution presented in our work. Joining geometry and computer, we present a model for the introduction of the problem in high school math classes as a motivational environment for the study of geometry. Then the application of the method was performed with a group of students, developing the problem and introducing the concepts needed to build the solution of it. At the end of the application, we held a discussion with students in order to verify the e ectiveness of the presented methodological proposal. In the analysis of the discussion, a greater interest in learning the content was diagnosed as the understanding of concepts, according to them, has become clearer with the dynamism of the software. This shows that the junction between mathematics and computational technologies help in teaching and learning geometry in high school.