Pastrán Calles, Félix Reinaldo, Argenis Montilla, and Antonelly Castillo Gutiérrez. 2018. “Didactic Resources from Constructivism for General Geography Teaching”. Revista Electrónica REDINE 9 (1): 28-39. https://mail.revistas.uclave.org/index.php/redine/article/view/834.