Yen, C. C., & Tajudin, N. M. (2015). Assessing First Year Pre-service Teachers’ Geometric Reasoning Ability on Two-Dimensional Shapes (1 - 12). EDUCATUM Journal of Science, Mathematics and Technology, 2(1), 1-12. https://ejournal.upsi.edu.my/index.php/EJSMT/article/view/24