Chusak Chubthaisong และ Ramnaree Nontapa. (2023) Guidelines for Developing Mathematical Understanding and Representation of Fractional Problem-Solving Abilities of Grade Seven Students. <i>Interdisciplinary Academic and Research Journal</i>, <i>3</i>(5), 63-80.Chusak Chubthaisong และ Ramnaree Nontapa. "Guidelines for Developing Mathematical Understanding and Representation of Fractional Problem-Solving Abilities of Grade Seven Students". Interdisciplinary Academic and Research Journal 3 (2023):63-80.Chusak Chubthaisong และ Ramnaree Nontapa. Guidelines for Developing Mathematical Understanding and Representation of Fractional Problem-Solving Abilities of Grade Seven Students. DR.KEN Institute of Academic Development and Promotion:ม.ป.ท. 2023.