Atcharaporn Assawaphum และ Nongluk Viriyapong. (2024) Development of Mathematical Problem-Solving Ability in Addition, Subtraction, Multiplication and Division Using Problem-Based Learning (PBL) with Board Games for Prathomsuksa 2 Students. <i>Journal of Science and Science Education</i>, <i>7</i>(1), 104-115.Atcharaporn Assawaphum และ Nongluk Viriyapong. "Development of Mathematical Problem-Solving Ability in Addition, Subtraction, Multiplication and Division Using Problem-Based Learning (PBL) with Board Games for Prathomsuksa 2 Students". Journal of Science and Science Education 7 (2024):104-115.Atcharaporn Assawaphum และ Nongluk Viriyapong. Development of Mathematical Problem-Solving Ability in Addition, Subtraction, Multiplication and Division Using Problem-Based Learning (PBL) with Board Games for Prathomsuksa 2 Students. Faculty of Science, Ubon Ratchathani University:ม.ป.ท. 2024.