1. CIDTFF, Research Centre on Didactics and Technology in the Education of Trainers and CISUC, Centre for Informatics and Systems of the University of Coimbra, Department of Education and Psychology, University of Aveiro, Campus Universitário
de Santiago, 3810-193, Aveiro, PORTUGAL
2. Faculty of Psychology and Educational Sciences of Coimbra, University of Coimbra, PORTUGAL