I am an Associate Professor of Physical Chemistry at the Universidad de Oviedo (Spain). I have been teaching physical chemistry for more than twenty years and have always been interested in alternative teching methods and involved in different pedagogical innovation projects (some details are available, in spanish, on my website http://www.unioviedo.es/jborge/materiales-didacticos). Since two years ago, I applied the flipped methodology to teach classical thermodynamics in the first course of our Degree in Chemical Engineering: the results are truly good.