“Learning Sets Theory Using Gaple Cards: A Study of East Java Ethnomathematics ”. Jurnal Pengembangan Pembelajaran Matematika (JPPM) 5, no. 2 (August 31, 2023): 153–163. Accessed February 7, 2026. https://ejournal.uin-suka.ac.id/tarbiyah/jppm/article/view/7190.