: The Bilingual Teaching and Learning in Electronics Engineering Department. This study was carried out to obtain information on the bilingual teaching and learning process using the effective contextual approach. This was an action research study conducted in three cycles. Each cycle consisted of three meetings. There were two groups of students involved in this study. Each of group comprised 42 students. The results showed that the students' achievement in the last cycle was categorized as good (mean = 72.48 compared to the targeted mean of 70). There was an improvement in the students' activity and motivation in the teaching and learning process. There was also an improvement on the students' use of English in the last two cycles. However, the improvement was not as high as targeted value. At the end of the last cycle, the students' learning activity, motivation, and the use of English were in sufficient category. The target was not achieved possibly because of the class size (too big) and the uncomfortable classroom