Harani Tanjung, S.A. and Amalia, Y. 2019. PENGEMBANGAN BAHAN AJAR PROBLEM BASED LEARNING KEMAMPUAN PEMECAHAN MASALAH MATERI SPLTV. Jurnal Ilmiah Pendidikan Matematika Al Qalasadi. 3, 1 (Jun. 2019), 70-80. DOI:https://doi.org/10.32505/qalasadi.v3i1.894.