Muñoz Serrano, Encarnación, Concepción Cabezas Torres, and José Ramón Ruiz Suárez. “Proposals to Improve Mathematical Competencies”. Avances en Supervisión Educativa, no. 7 (November 1, 2007). Accessed August 14, 2025. https://avances.adide.org/index.php/ase/article/view/293.