Prapaporn Nongharnpituk และ Pranpreeya Thongmee; Paweena Khansila. (2025) The Development of Problem-Solving Ability in Addition and Subtraction of Whole Numbers Not Exceeding 100,000 Using KWDL Technique Combined with Educational Games for Grade 3 Students. <i>Journal of Science and Science Education</i>, <i>8</i>(1), 81-91.Prapaporn Nongharnpituk และ Pranpreeya Thongmee; Paweena Khansila. "The Development of Problem-Solving Ability in Addition and Subtraction of Whole Numbers Not Exceeding 100,000 Using KWDL Technique Combined with Educational Games for Grade 3 Students". Journal of Science and Science Education 8 (2025):81-91.Prapaporn Nongharnpituk และ Pranpreeya Thongmee; Paweena Khansila. The Development of Problem-Solving Ability in Addition and Subtraction of Whole Numbers Not Exceeding 100,000 Using KWDL Technique Combined with Educational Games for Grade 3 Students. Faculty of Science, Ubon Ratchathani University:ม.ป.ท. 2025.