Transforming Learning with Meaningful Technologies 14th European Conference on Technology Enhanced Learning, EC-TEL 2019, Delft, The Netherlands, September 16-19, 2019, Proceedings - Scheffel, Maren; Scheffel, Maren; Broisin, Julien; Broisin, Julien; Pammer-Schindler, Viktoria; Pammer-Schindler, Viktoria; Ioannou, Andri; Ioannou, Andri; Schneider, Jan; Schneider, Jan (Springer International Publishing : Imprint: Springer, 2019)