SARDUY NÁPOLES, Delia; MONTES DE OCA RECIO, Nancy; SOBRADO CÁRDENAS, Estrella. Mathematics in times of covid-19:  challenges and implications to the teaching and learning process. Transformación, [S. l.], v. 16, n. 3, p. 488–501, 2024. Disponível em: https://transformacion.reduc.edu.cu/index.php/transformacion/article/view/346. Acesso em: 20 nov. 2025.