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The Development of Instructional Activities Enhancing their Ability to Statistical Reasoning via Problem Solving Approach for Enrichment Science Classroom Students in Matthayomsuksa III. Sci. Ess. J [Internet]. 2020 Dec. 28 [cited 2026 Oct. 23];36(2):217-46. Available from: https://ejournals.swu.ac.th/sej/article/view/11968