The quality of teacher learning practices currently continues to be improved through various training programs, mentoring, and evaluations from Indonesian government support. The 21st-century teacher's ability to develop learning technology is a cooperative learning approach and multidisciplinary integration of science to solve surrounding problems. This study describes the effectiveness and benefits of Science, Technology, Engineering, and Mathematics (STEM) in the Automotive Engineering Competency with the Engineering Design Process (EDP) approach in the "motorcycle burglary case studies. "This research is a type of pre-experimental design in the form of a pretest-posttest group design. The purposive sampling technique was carried out to find out the sample of students in one of the vocational schools Yogyakarta, Indonesia in 2019. The results showed that (1) the assessment of lesson plan in the form of review and supervision was declared complete; (2) aspects of the STEM-EDP assessment consist of formative tests, the 1st Student Worksheet, the 2nd Student Worksheet, and Products which stated in the seven stages of EDP; (3) Wilcoxon test, Z =-4.86 with significance (p) = 0.00 <0.05, illustrates that STEM-EDP is effective than summative learning, and can improve learning. © 2020 The Authors.
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