Umasugi, Sitti Mutia, Sugiman Sugiman, Padrul Jana, and Pornphirom Kraiviset. “Realistic Mathematics Education (RME)-Based Learning Trajectory for Arithmetic Social Using Culinary Context of Yogyakarta”. Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran 8, no. 4 (December 4, 2022): 985–996. Accessed August 16, 2025. https://e-journal3.undikma.ac.id/index.php/jurnalkependidikan/article/view/6176.