consisted of 21–24 students. The students were enrolled in a chemistry course and had received chemistry preparation in the previous year. Students in the control group covered the same material using pedagogical methods in which the games were not employed and they were also taught by the same teacher that taught the experimental group.
At the end of the unit, these students filled out the identical survey of perceptions used to assess the games (Table 3), where the term “educational game” was changed to
“ task ” The aim was to compare the views of students in the control group in relation to the activities proposed in the classroom with those obtained for the experiment group in relation to the games. In this case, the value of the reliability coefficient Cronbach’s alpha was 0.82, which is very similar to that obtained for the experimental group. The data for a comparative analysis of the results for the experimental and control groups are given in Table 6.