Yuliani, Dewi, Atma Murni, and Nahor Murani Hutapea. “Development of a Contextual Student Worksheet on Relations and Functions to Facilitate students’ Mathematical Conceptual Understanding”. Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika 7, no. 2 (December 30, 2024): 341–349. Accessed December 17, 2025. https://ojs-staging.upp.ac.id/index.php/absis/article/view/2645.