Anisa UI, Kartini K. Analysis of Student Errors in Solving Relation and Function Problems Based on Kastolan Error Theory Class VIII SMP IT Bangkinang. Universitas Jambi [Internet]. 2023Sep.3 [cited 2024Nov.29];13(2):172-80. Available from: https://online-journal.unja.ac.id/edumatica/article/view/19473