There is a need to examine the effect of using discussion cases to enrich students' learning outcomes. A research framework was created to study this multidimensional relationship, via the instruments of interactivity, students' time devotion and students' engagement in order to find which factors could improve learning outcomes, including positive group interaction and individual learning performance. The findings from three cohorts of undergraduate students of the same course indicated that interactivity with peers and with the lecturers during the case discussion in classes improved emotional engagement, which in turn positively influenced positive group interaction and individual learning performance. The study also found that students' emotional engagement was a significant factor in enriching outcomes. Although there was a lack of direct impact of interactivity on learning outcomes, there were many reasons attributed to it. The time that students devoted to the task, as a result of interactivity with the lecturer, was a significant predictor of emotional academic engagement, but it did not predict desirable learning outcomes.