Pichapop Pothisakha และ Jongkol Thamsuan. (2026) Effects of Organizing Mathematics Learning Activities Using IMPROVE Method and ACT Strategy on Mathematical Problem Solving Ability. <i>An Online Journal of Education (OJED)</i>, <i>21</i>(2), 1-19.Pichapop Pothisakha และ Jongkol Thamsuan. "Effects of Organizing Mathematics Learning Activities Using IMPROVE Method and ACT Strategy on Mathematical Problem Solving Ability". An Online Journal of Education (OJED) 21 (2026):1-19.Pichapop Pothisakha และ Jongkol Thamsuan. Effects of Organizing Mathematics Learning Activities Using IMPROVE Method and ACT Strategy on Mathematical Problem Solving Ability. Centre for Education Innovation, Print and Online Media:ม.ป.ท. 2026.