Siagian, R.P. , Siagian, A.F. and Sijabat, D. 2026. The Influence of the Problem Based Learning (PBL) Learning Model on the Critical Thinking Skills of Grade V . Jurnal Ilmu Sosial dan Humaniora . 4, 1 (Jan. 2026), 347–358. DOI:https://doi.org/10.58540/isihumor.v4i1.1491.