Glasserman Morales, Leonardo David, and María Soledad Ramírez Montoya. “Use of Open Educational Resources (OER) and Learning Objects (LO) in k12 Instruction”. Education in The Knowledge Society 15, no. 2 (July 2, 2014): 86–107. Accessed April 18, 2025. https://revistas.usal.es/tres/index.php/eks/article/view/11888.