Yacob, Rosliza, and Roslinda Rosli. “Comparison of the Cognitive Level of the Topic Of Mixed Operations in Mathematics Year 5 Primary Schools in Malaysia and Brunei: Perbandingan Aras Kognitif Topik Operasi Bercampur Matematik Tahun 5 Sekolah Rendah Malaysia Dan Brunei”. Jurnal Pendidikan Sains dan Matematik Malaysia 13, no. 1 (May 28, 2023): 79–98. Accessed November 22, 2024. https://ojs.upsi.edu.my/index.php/JPSMM/article/view/7614.