To obtain the students’ perceptions of PBL was administrated four different scales, Peer Evaluation Scale (PES),
Self-Evaluation Scale (SES), Tutor’s Performance Evaluation Scale (TPES), and Students’ Evaluation of PBL Scale
(SEPBLS), respectively (Gurses et al., 2004). Some of them consist of three-point-Likert type items and the scales
include essay-type item for getting students ideas. These scales were done after treatment.
The obtained data was examined by using SPSS 16.0 (Statistical Package for Social Sciences).