Sánchez Ordoñez, Eruin Alonso. “Ratio , Proportion and Proportionality : From the Anthropological Theory of Didactics Perspective”. Revista Latinoamericana de Investigación en Matemática Educativa 16, no. 1 (July 13, 2023): 65–97. Accessed October 23, 2026. https://www.relime.org/index.php/relime/article/view/227.