MÜLLER, T. .; SCHMALENBACH, C. . Escaleras de aprendizaje: Enseñando con la metodología MultiGradoMultiNivel: Ladders of Learning – Teaching with the MultiGradeMultiLevel-Methodology. Diá-logos, [S. l.], v. 10, n. 18, p. 47–56, 2023. Disponível em: https://www.revistas.udb.edu.sv/ojs/index.php/dl/article/view/140. Acesso em: 30 abr. 2025.