NOFIRSTKA ARVIARIANI, V.; PUTRI, D. A. A. .; ASTUTIK, L. S. . DAMPAK IMPLEMENTASI PROBLEM BASED LEARNING PADA TINGKAT KEPERCAYAAN DIRI PESERTA DIDIK. Al-Irsyad Journal of Mathematics Education, [S. l.], v. 4, n. 1, p. 19–33, 2025. DOI: 10.58917/ijme.v4i1.146. Disponível em: http://ejurnal.stkipddipinrang.ac.id/index.php/wjme/article/view/146. Acesso em: 22 agu. 2025.