Chaljub-Hasbún J, Medina D, Pozo Úrsula. Extended School Day Development in Primary Level Evaluation. Rev. Electr. Educare [Internet]. 2021 Mar. 18 [cited 2026 Feb. 10];25(2):1-14. Available from: https://www.revistas.una.ac.cr/index.php/EDUCARE/article/view/14973