IMPACT OF WEB 2.0 TOOLS IN THE MOOC. A CASE STUDY IN HIGHER EDUCATION - Salas Rueda, R A; Pozos Cuellar, R; Roel Ruiz Loredo, C; Calvo Palmerin, U; Castro Busto, R (EDULEARN11: 3RD INTERNATIONAL CONFERENCE ON EDUCATION AND NEW LEARNING TECHNOLOGIES, 2016)