I work at Universidad Autónoma de Guerrero, Chilpancingo campus, Mexico. I am in the Cimate (Centro de Investigación en Matemática Educativa) of the Academic Unit of Mathematics. | I work at Universidad Autónoma de Guerrero, Chilpancingo campus, Mexico. I am in the Cimate (Centro de Investigación en Matemática Educativa) of the Academic Unit of Mathematics. |