1. Advances in Intelligent Tutoring Systems: Problem-solving Modes and Model of Hints
2. Arnab, S., Berta, R., Earp, J., de Freitas, S., Popesci, M., Romero, M., … Usart, M. (2012). Framing the adoption of serious games in formal education. Electronic Journal of e-Learning, 10(2), 159-171.
3. Barab, S. A., Gresalfi, M., & Arici, A. (2009). Why educators should care about games. Teaching for the 21st Century, 67(1), 76-80.
4. Assessment in and of Serious Games: An Overview
5. Detecting student engagement: human versus machine.;N.Bosch;Proceedings of the 2016 Conference on User Modeling Adaptation and Personalization,2016