Lian LHL, Yew WT, Idris N. Assessing A Hierarchy of Pre-Service Secondary Mathematics Teachers’ Algebraic Thinking. AJATeL [Internet]. 2011 Dec. 22 [cited 2024 Nov. 22];1:38-51. Available from: https://ejournal.upsi.edu.my/index.php/AJATeL/article/view/1898