Chopaiad C, Janjaruporn R, Ugsonkid S. The Development of Instructional Activities Enhancing their Ability to Statistical Reasoning via Problem Solving Approach for Enrichment Science Classroom Students in Matthayomsuksa III. SEJ [Internet]. 2020 Dec. 28 [cited 2024 Oct. 7];36(2):217-46. Available from: https://ejournals.swu.ac.th/index.php/sej/article/view/11968