Mista, Widia, Zulfitri Aima, and Dewi Fitri. “Validitas E-LKPD Berbasis Problem Based Learning (PBL) Pada Materi Eksponen”. Jurnal Cendekia : Jurnal Pendidikan Matematika 8, no. 3 (November 23, 2024): 2373-2385. Accessed August 8, 2026. https://www.j-cup.org/index.php/cendekia/article/view/3508.