Foundations and Trends in Smart Learning Proceedings of 2019 International Conference on Smart Learning Environments - Chang, Maiga; Chang, Maiga; Popescu, Elvira; Popescu, Elvira; Kinshuk; Kinshuk; Chen, Nian-Shing; Chen, Nian-Shing; Jemni, Mohamed; Jemni, Mohamed; Huang, Ronghuai; Huang, Ronghuai; et al. (Springer Singapore : Imprint: Springer, 2019)