Yao, Xiangquan. “Nurturing Structural Thinking through Teacher-Facilitated Problem Solving”. Ohio Journal of School Mathematics 93, no. 1 (February 20, 2023): 27–33. Accessed April 29, 2026. https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/OJSM/article/view/9333.