JARQUÍN MATAMORO, R. F. Blackboard Plan as an active methodology for meaningful and friendly learning in Mathematics for secondary education in Nicaragua. Revista Científica de la FAREM-Estelí, [S. l.], v. 12, n. 45, p. 108–130, 2023. DOI: 10.5377/farem.v12i45.16040. Disponível em: https://camjol.info/index.php/FAREM/article/view/16040. Acesso em: 18 jul. 2024.