DEMSON; MANIK, Wanda Fitri Katarina; SIMANJUNTAK, Sinta Dameria. Application of the Problem Based Learning (PBL) Learning Model to Improve Mathematics Learning Outcomes in Rational Numbers . INTERNATIONAL JOURNAL OF ADVANCED ACADEMIC , [S. l.], v. 1, n. 05, p. 124–130, 2025. DOI: 10.3951.vol1iss5no6pp124. Disponível em: https://ejournal.pustakakaryamandiri.com/ojs/index.php/ijaa/article/view/75. Acesso em: 9 sep. 2025.