Lisfianisa, Syipa, Wily Wandari, and Benny Anggara. “Analysis of Murder Learning on Arithmetic Concepts Based on Retrospective Analysis”. Proceeding International Conference on Lesson Study 1, no. 1 (June 10, 2024): 297–307. Accessed June 7, 2025. https://journal.umg.ac.id/index.php/icls/article/view/7840.