เรียบเรียง ว. A Study of Mathematical Problem Solving Ability and Reasoning Mathematical Ability on the Topic of Probability by Organizing Learning Activities using IMPROVE Method of Mathayomsuksa 3 Students. RMUTT J Hum Soc Sci [internet]. 2018 Dec. 26 [cited 2026 Sep. 3];5(2):72-85. available from: https://so05.tci-thaijo.org/index.php/RMUTI_SS/article/view/189540