n addition, the studies on critical thinking were mostly done in mathematical field [21]. The studies that investigated the link between PBL and critical thinking in across disciplines and populations reveal a scarcity, especially studies in a control and experimental condition. Therefore, the main purpose of this paper is to investigate the effect of PBL on students’ critical thinking ability, as compared to conventional approach in the electrical engineering course. This study uses a special design of PBL procedures from existing literature that focuses on three aspects, namely, the problem orientation, the method of facilitation, and the strategy of assessment. First, this paper presents a little introduction to critical thinking. Then, this paper presents and discusses the result of the experimental research on critical thinking, as compared to conventional approach. The result indicated PBL had not significantly enhanced students’ critical thinking ability, as compared to conventional approach in an electrical engineering module.