Solving and investigating: possibilities for the teaching of exponential functions

• Autor(a) principal: Cardozo, Dionei
• Data de Publicação: 2019
• Outros Autores: Possamai, Janaína Poffo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ensino de Ciências e Matemática - REnCiMa
• Texto Completo: https://revistapos.cruzeirodosul.edu.br/rencima/article/view/1875
• topic: Resolução de Problemas; Investigação Matemática; Função exponencial; Problem Solving; Mathematical Investigation; Exponential Function

This research is part of the master's dissertation entitled "From the Carbon Atom to the Great Populations: Teaching Exponential Functions under the Perspective of Problem Solving" of the Post-Graduate Program in Teaching Natural Sciences and Mathematics of the Regional University of Blumenau (FURB). The aim of this study is to analyze a problem-solving practice from the perspective of an investigative approach to the teaching of exponential functions in a first-year high school class. For that, the history of Problem Solving is discussed, as well as the differences and approximations to the context of Mathematical Research. A practice, involving the planting of a bean seed and the search for a corresponding function, is described and analyzed in order to show how a mathematical problem can be structured with questions that lead to an investigative process. As a result, a pedagogical practice in this context allows students to feel part of doing mathematics, exploring patterns, testing hypotheses, validating results and searching for new paths, as well as increasing confidence in mathematics as they expose and discuss their ideas with classmates and with the school community itself.