Rojas Bello RR, Marysol del Rosario E. Application of Pólya’s problem solving to the study of angles in fourth grade high school students. rev.perspect [Internet]. 1 de julio de 2020 [citado 3 de julio de 2024];5(2):6-12. Disponible en: https://revistas.ufps.edu.co/index.php/perspectivas/article/view/2823