Jesada Buphasang และ Umaporn Kassanuka;Supaporn Sankul;Supakrit Thiplueng;Mongkon Phiapeng;Watthana Kunnu. (2025) A Study on Learning Achievement through Knowledge Construction Techniques using an Instructional Package on Standardized Welding Positions. <i>Journal of Research and Innovation in Industrial Education</i>, <i>1</i>(1), 57-70.Jesada Buphasang และ Umaporn Kassanuka;Supaporn Sankul;Supakrit Thiplueng;Mongkon Phiapeng;Watthana Kunnu. "A Study on Learning Achievement through Knowledge Construction Techniques using an Instructional Package on Standardized Welding Positions". Journal of Research and Innovation in Industrial Education 1 (2025):57-70.Jesada Buphasang และ Umaporn Kassanuka;Supaporn Sankul;Supakrit Thiplueng;Mongkon Phiapeng;Watthana Kunnu. A Study on Learning Achievement through Knowledge Construction Techniques using an Instructional Package on Standardized Welding Positions. Faculty of Technical Education, Rajamangala University of Technology Isan, Khonkaen Campus:ม.ป.ท. 2025.