Gutiérrez M, Silguian, and Eugenio López Mairena. “Teaching of Geometry to Second Year High School Students under the Competences Approach”. Science and Interculturality 6, no. 1 (July 1, 2010): 110-119. Accessed May 19, 2024. http://ceimm.uraccan.edu.ni/index.php/Interculturalidad/article/view/122.