Roeth A.O.Najoan, Dwi Andriani Pamase, & Mozes Yustus Legi. (2026). Implementation of the Problem-Based Learning (PBL) Model to Improve Mathematics Learning Outcomes of Third-Grade Students . ARMADA : Jurnal Penelitian Multidisiplin, 4(6), 1311–1316. https://doi.org/10.55681/armada.v4i6.2255