Letícia RangelVictor GiraldoNelson Maculan2026-03-222026-03-22201410.21711/2319023x2014/pmo21https://doi.org/10.21711/2319023x2014/pmo21https://andeanlibrary.org/handle/123456789/67791This work aims to investigate the identification of elementary parts of Mathematics (in Klein's sense, [9], [10], The research was developed from a collective study with a group of teachers, around the theme of rational numbers.ptPhilosophyarticle