Enlargement and reduction: a homothetic vision of similarity

Authors

  • Aline Nogueira Rocha
  • Ana Mary Fonseca Barreto de Almeida
  • Karine Calil da Cruz
  • Luana de Sousa Vieira
  • Márcia Valéria Azevedo de Almeida Ribeiro

Keywords:

Enlargement, Reduction, Similarity, Homothetic transformation

Abstract

This mini-course aims at developing a homothetic vision of similarity. With the focus on the teaching and learning of Geometry, considering the numerous difficulties and obstacles found while teaching such a discipline, motivational activities with the use of various resources such as textbooks will be proposed: rubberized material, straws, tacks, ruler, compasses, drawing paper and graph paper. In this mini-course, participants will have the opportunity to zoom in and out several pictures by using two methods: first, the grid and, then, the homothetic transformation, developing, intuitively, the idea of similarity of polygons.

Author Biographies

  • Aline Nogueira Rocha
    Professora de Matemáticado Colégio João Paulo II.
  • Ana Mary Fonseca Barreto de Almeida
    Especialista em Matemática Superior pela USS. Professora do CEFET Campos. Professora da UNIFLU/FAFIC. Professora da Escola Municipal Ângelo Faez.
  • Karine Calil da Cruz
    Professora de Matemáticado Centro Educacional de Cultura Afro-Brasileira (CECAB).
  • Luana de Sousa Vieira
    Professora de Matemática do Colégio Paulo VI.
  • Márcia Valéria Azevedo de Almeida Ribeiro
    Mestre em Educação Matemática. Professora do CEFET Campos, da UNIFLU/FAFIC/FDC, da UCAM Campos, e do C. E. Julião Nogueira.

Issue

Section

Minicourses