Barberán-Mendoza, Maura Leonela, and Eddie José Alcívar-Castro. “The Understanding of Mathematical Notions for the Cognitive Development of Students”. International journal of health sciences 6, no. S5 (June 9, 2022): 657–665. Accessed November 6, 2024. https://sciencescholar.us/journal/index.php/ijhs/article/view/8695.