Jaijan, Wasukree, and Wipaporn Suttiamporn. “Mathematical Connections of Students in Lesson Study and Open Approach”. RMUTSB ACADEMIC JOURNAL 1, no. 1 (January 1, 2013): 69–82. Accessed May 16, 2024. https://li01.tci-thaijo.org/index.php/rmutsb-sci/article/view/98187.