How to gamify learning systems?: an experience report using the design sprint method and a taxonomy for gamification elements in education - Toda, Armando Maciel; Palomino, Paula Toledo; Santos, Wilk Oliveira dos; Rodrigues, Luiz; Klock, Ana Carolina Tomé; Gasparini, Isabela; Cristea, Alexandra I; Isotani, Seiji (Educational Technology & Society, 2019)