Reskina, Reskina, and Kartini Kartini. “Analysis of Student’s Errors in Solving Social Arithmetic Problems Based on Newman’s Theory”. Edumatica : Jurnal Pendidikan Matematika 12, no. 3 (December 31, 2022): 238–248. Accessed April 22, 2026. https://www.online-journal.unja.ac.id/edumatica/article/view/19589.