Hamdan N, Tze Kiong T, Mei Heong Y, et al. An Effectiveness of High Order Thinking Skills (HOTS) Self-Instructional Manual for Students’ Assignment Achievement. jtet. 2019;11(1). Accessed April 7, 2026. https://penerbit.uthm.edu.my/ojs/index.php/JTET/article/view/3234