Adaptive Instructional Systems First International Conference, AIS 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26-31, 2019, Proceedings - Sottilare, Robert A.; Sottilare, Robert A.; Schwarz, Jessica; Schwarz, Jessica (Springer International Publishing : Imprint: Springer, 2019)