Papaporn Nongharnpituk และ Piriya Yenjai; Paweena Khansila. (2025) Developing Mathematical Problem-Solving Ability in Fractions Among Grade 5 Students Through Cooperative Learning Using TGT Technique and Bar Model. <i>Journal of Science and Science Education</i>, <i>8</i>(1), 57-66.Papaporn Nongharnpituk และ Piriya Yenjai; Paweena Khansila. "Developing Mathematical Problem-Solving Ability in Fractions Among Grade 5 Students Through Cooperative Learning Using TGT Technique and Bar Model". Journal of Science and Science Education 8 (2025):57-66.Papaporn Nongharnpituk และ Piriya Yenjai; Paweena Khansila. Developing Mathematical Problem-Solving Ability in Fractions Among Grade 5 Students Through Cooperative Learning Using TGT Technique and Bar Model. Faculty of Science, Ubon Ratchathani University:ม.ป.ท. 2025.