Berutu, S.; Sihombing, I.; Gaol, R. L. Pengaruh Model Problem Based Learning Berbantuan Media Visual Terhadap Keterampilan Berpikir Kritis Peserta Didik Kelas IV: The Effect of the Problem-Based Learning Model Assisted by Visual Media on the Critical Thinking Skills of Grade IV Students. Ganec Swara 2026, 20, 821-829.