General information
SD
Initially, there were 100 (73%) out of 137 undergraduate 1st year dental students from regular and international class who filled out the informed consent for their participation in the study. Students were randomly assigned into 2 groups (A and B). During the trial, a total of twenty-six students did not complete a minimum of 10 missions per topic within the designated time frame, and were excluded from the analyses. The reasons for students not being able to complete the required missions were high study load and Before the intervention, students were given pre-tests, and the scores revealed no statistically significant difference of student cognitive skills in group A and B for both oral histology topics (Table 
General Information of Study ParticipantsPre-test score(mean ± SD)