[1] GRIE research group (Interdisciplinary Research Group in Education), University of Andorra(UdA), Plaça de la Germandat, 7, Sant Julià de Lòria
[2] The Open University, Knowledge Media Institute, Walton Hall, Milton Keynes
[3] ARGET (Applied Research Group in Education and Technology), Rovira i Virgili University(URV), Edifici Ventura i Gassol, 3-2, Campus Sescelades, Carretera de Valls, s/n, Tarragona