A joint work of Jose Maria Alonso (Universidade de Santiago de Compostela, Spain) and Gabriella Casalino (University of Bari Aldo Moro, Italy) Presented at HELMeTO 2019 - International Workshop on Higher Education Learning Methodologies and Technologies Online, June 6-7, 2019, Novedrate (CO), Italy full text: https://link.springer.com/chapter/10.1007/978-3-030-31284-8_10