Fig. 1: Box plots showing the difference between unpaired pre and post-tests for all students who participated in the study in both tranches.

a Tranche 1: pre-test mean = 5.48 ± 2.13, post-test mean = 7.92 ± 2.38; b tranche 2: pre-test mean = 5.72 ± 2.27, post-test mean = 8.09 ± 2.70.