This research was prepared for Promote the ability to think systematically about drawing ladder diagrams in the Mable Logic Control program. The sample consisted of 18 3rd year vocational certificate students. The data collection method was simple random sampling using lots. The experimental research design used in the experiment was a study of a single experimental group. Measured only after the experiment. The single group, posttest-design. The tools used in the research include: Problem-based learning management activities Measurement of systematic thinking ability (after class). Steps for creating it: 1. Study teaching and learning problems in the classroom. 2. Study principles, concepts, and theories. 3. Determine the structure and steps. Teaching and learning innovation. 4. Create innovation. 5. Create measurement tools. Ready to find the quality of the tools. 6. Take the innovation to be evaluated by experts to check the quality. 7. Take the modified innovation and use it to teach with real sample groups. The results of the research found that it has a mean value of (x ̅ = 4.69, S.D. = 0.48) considered consistent with the assumption that it is at the passing level. (Learners passed the criteria of 80 percent or more of all students). The results of the 1st and 2nd systematic thinking ability tests were overall at a better level (with a score of 7 and above). The number of 16 people is 88.88 percent and the number of 15 people is 83.33 percent, which is according to the assumptions made.

Authors:
Priyaporn Ratsame, King Mongkut's University of Technology Thonburi, Thailand
Pakpoom Chansri, King Mongkut's University of Technology Thonburi, Thailand
Chamnan Ratsame, King Mongkut's University of Technology Thonburi, Thailand

About the Presenter(s)
Miss Priyaporn Ratsame is a master's degree student in Industrial Education and Technology at King Mongkut's University of Technology Thonburi.

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