Tangram: uma proposta pedagógica para o ensino de área e perímetro de figuras poligonais planas

Abstract

There is a consensus among most students that Mathematics is seen as a “bogeyman”, especially in the subject of Geometry. Using Tangram as a teaching material this Master Dissertation aims to demystify this vision and propose a playful way of consolidating the concepts for the calculation of area and perimeter of flat polygonal figures. It also proposes the expansion and consolidation of concepts and properties of triangles and quadrilaterals, and trace the way to na specific mathematical vocabulary, particularly within the area of flat Euclidean Geometry. We discuss that it is possible to bring the student closer to the flat polygonal figure study, through the handling of concrete material. The theoretical basis for this work is driven on the use of games as an interesting route to awake in learning Mathematics. The Didactic Engineering methodology was used in the research, presenting and applying its four stages: preliminary analysis, construction of the experiment, experimentation and validation, in the practical experiment with students. The project and experimentation were developed with ninth grade classes, from Elementary School , from Dr. Galdino do Valle Filho State Public School, from the Rio de Janeiro State Education System, located in the city of Nova Friburgo.