MENINGATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIS MELALUI MODEL PROBLEM BASED LEARNING: IMPROVING MATHEMATICAL PROBLEM SOLVING ABILITY THROUGH THE PROBLEM BASED LEARNING MODEL. Abacus: Academic Journal of Mathematics Learning and Education, [S. l.], v. 1, n. 1, p. 25–37, 2020. DOI: 10.59605/abacus.v1i1.383. Disponível em: https://jurnal.upg.ac.id/index.php/abacus/article/view/383.. Acesso em: 3 may. 2024.