“I want a triangle of type...”: mathematics teachers' learning in a lesson study with GeoGebra

• Autor(a) principal: Cordeiro Batista, Carolina
• Data de Publicação: 2023
• Outros Autores: Monteiro Paulo, Rosa
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Educação Matemática em Revista
• Texto Completo: https://www.sbembrasil.org.br/periodicos/index.php/emr/article/view/3352
• topic: Educación Matemática; Fenomenología; Formación de Profesores; Tecnologías Digitales; Educação Matemática; Fenomenologia; Formação de Professores; Tecnologias Digitais; Mathematics Education; Phenomenology; Teacher Formation; Digital Technologies

This text explains the learning of mathematics teachers who were willing to analyze classes in which they worked on triangle content with the GeoGebra software. The data discussed are an excerpt from a doctoral research and were produced in a group of three mathematics teachers from a public school. This group was constituted for the research, and the actions were carried out following the stages of the lesson study, which provides for the definition of themes, planning, implementation and discussion of classes. This clipping, it is exposed what was shown in the discussion of classes on classification of triangles and metric relations in the right triangle. The conduction of the research and the analysis of the data took place in a phenomenological posture. The results indicate that participation in the formation process led teachers to learn aspects related to communication in the classroom, their own practice and students' reasoning.