1.
Contento Minga NE, Aguilar Gordón F del R. Metodology strategy for the development of preoperational thinking in the teaching of oral and written comprehension and expression in pre-school children. RSU [Internet]. 2025 Jan. 6 [cited 2026 Aug. 3];8(1):27-58. Available from: https://publishing.fgu-edu.com/ojs/index.php/RSU/article/view/560