Since the 2012-2013 academic year, the Departament d'Ensenyament de la Generalitat de Catalunya started an upgrade program about Science, Technology and Mathematics (CTM) for secondary school STEM teachers with the collaboration of the Instituts de Ciències de l'Educació (ICE) of several Universities (UPC,UdG,UdL, URV), in order to foster science, technology and mathematical teachers' updated knowledge and didactics with the overall objective of facilitating the transfer of this training to their classrooms and to improve both their teaching and the development of students' competences and learning outcomes.