Harani Tanjung, Sri Ayu, and Yuli Amalia. “PENGEMBANGAN BAHAN AJAR PROBLEM BASED LEARNING KEMAMPUAN PEMECAHAN MASALAH MATERI SPLTV”. Jurnal Ilmiah Pendidikan Matematika Al Qalasadi 3, no. 1 (June 24, 2019): 70-80. Accessed January 18, 2026. https://journal.iainlangsa.ac.id/index.php/qalasadi/article/view/894.