Pattawan Narjaikaew และ Rinlaya Manasil. (2025) Promoting the scientific Problem Solving Ability of Grade 6 Students by Using Open Approach Supplemented with Feynmen’s Learning Technique in Force and Electrical Energy. <i>Journal of Science and Science Education</i>, <i>8</i>(1), 92-107.Pattawan Narjaikaew และ Rinlaya Manasil. "Promoting the scientific Problem Solving Ability of Grade 6 Students by Using Open Approach Supplemented with Feynmen’s Learning Technique in Force and Electrical Energy". Journal of Science and Science Education 8 (2025):92-107.Pattawan Narjaikaew และ Rinlaya Manasil. Promoting the scientific Problem Solving Ability of Grade 6 Students by Using Open Approach Supplemented with Feynmen’s Learning Technique in Force and Electrical Energy. Faculty of Science, Ubon Ratchathani University:ม.ป.ท. 2025.