Ma, Xin, and Laureen McIntyre. “Exploring Differential Effects of Mathematics Courses on Mathematics Achievement”. Canadian Journal of Education/Revue canadienne de l’éducation 28, no. 4 (December 2, 2005): 827‐852. Accessed May 5, 2026. https://www.cje-rce.ca/index.php/cje-rce/article/view/2881.