MOLINA JIMÉNEZ, F. E.; CORONEL SÁNCHEZ, M. E.; CASNANZUELA PACHUCHO, I. A. Didactic material in the process of teaching triangles. Espirales Revista Multidisciplinaria de investigación, [S. l.], v. 3, n. 29, p. 1–19, 2019. DOI: 10.31876/er.v3i29.587. Disponível em: https://www.revistaespirales.com/index.php/es/article/view/587. Acesso em: 17 apr. 2026.