“…Clearly, this issue is not new and different authors have proposed alternative ways to solve the problem of heterogeneity of skills. Gamification [1,6], levelling seminars or individualized teaching [4], the use of electronic contents [5], and focusing on the learning process [7] are some examples. Summarizing, we can find alternative ways of the combined process of teaching-learning that can deal with the heterogeneity of skills problem.…”