Hamapinda, Eryani, Anggriati Ledu Ngaba, and Yuliana Tamu Ina Nuhamara. “Analysis of the Students Mathematics Problem Solving Ability of Grade VII on Integer Operation Material”. Edumatica : Jurnal Pendidikan Matematika 11, no. 02 (August 30, 2021): 46-54. Accessed April 19, 2024. https://online-journal.unja.ac.id/edumatica/article/view/12210.