This paper deepens in the educational methodology of the e-learning experience conducted by the University Network for Architecture and Sustainability (UNAUS) in its online courses which are focussed on: Repair and Restoration for Sustainable Architecture, Building and Sustainability and GIS Techniques for Sustainable Development. This paper describes one of the learning tools that characterize them, a transversal debate organized in each edition of the courses, and the benefits it provides. Thus, we describe and analyze the basic methodological criteria adopted for the organization of the debate: the role of the moderator, conducted by an invited expert, the choice of a theme that cuts across the three courses and the open access to the debate, which are extremely enriching facts. The integrated and cross reflection on such a teaching experience and the results obtained allow important conclusions that expand the horizons of specific technical issues focused online courses.
