KESULITAN BELAJAR SISWA DALAM MATA PELAJARAN MATEMATIKA KELAS 9 MTS JARIYATUL ISLAMIYAH. Abacus: Acad. J. Math. Learn. Educ. [Internet]. 2022 Aug. 11 [cited 2024 May 15];2(2):48-56. Available from: https://jurnal.upg.ac.id/index.php/abacus/article/view/226