10.65624 PENGARUH PROBLEM BASED LEARNING BERBASIS ETNOMATEMATIKA SUKU TORAJA TERHADAP HASIL BELAJAR  BANGUN DATAR KELAS V SD. (2026). JOEBAS: Journal of Education, Behavior, and Social Studies, 2(1), 164-172. https://doi.org/10.65624/e2v42e43