Robertus Daya. “ANALYSIS OF ABILITY IN UNDERSTANDING MATHEMATICS CONCEPTS ON THE CIRCULAR MATERIAL OF STUDENTS OF CLASS VIII OF SMP NEGERI 2 BAY IN THE 2020/2021 STUDY YEAR”. Afore : Jurnal Pendidikan Matematika 1, no. 2 (February 15, 2023): 78-87. Accessed July 5, 2025. https://jurnal.uniraya.ac.id/index.php/Afore/article/view/725.