E. A. Cardoso et al., "Learning scorecard: Monitor and foster student learning through gamification", in Proc. of the 2nd Int. Workshop on Educational Knowledge Management (EKM 2016), Matta, N., Zablith, F., Lahoud, I., and Ventura, S., Ed., Bologna, CEUR-WS, 2016, vol. 1780, pp. 39-50