Angganapattarakajorn, V. (2024) “Development of Mathematical Concepts about Statistics Using the Concept Formation Model together with Concept-Rich Instruction and Higher-Order Questions for Undergraduate Students Majoring in Mathematics”, Journal of Research and Curriculum Development , 14(1), pp. 19–30. available at: https://so03.tci-thaijo.org/index.php/jrcd/article/view/272303 (accessed: 12 September 2026).