Accordingly a student can get1 point for the 1st level, 3 for the 2nd, 7 for the 3rd, 15 for the 4th, and 31 for the 5th level maximum. Since the obtained data did not show normal distribution, the pretest scores were analyzed with Mann-Whitney U-Test and Wilcoxon Signed Rank Test applied on SPSS 16.0 statistical pack.