“Cartularies and Understanding Projects: An Educational Innovation Proposal for Learning about the Evolution of Feudalism in Compulsory Secondary Education” (2025) Educación y Futuro: Revista de Investigación Aplicada y Experiencias Educativas, (51), pp. 133–161. Available at: https://educacionyfuturo.com/educacionyfuturo/article/view/7650 (Accessed: 21 May 2026).