Collazo Expósito, L.M. and Geli de Ciurana, A.M. 2017. Advancement in Education for Sustainability. combining methodologies to work on critical and autonomous thinking, reflection and the capacity for transformation of the system. Iberoamerican Journal of Education. 73, (Jan. 2017), 131–154. DOI:https://doi.org/10.35362/rie730295.