“PENGEMBANGAN E-LKPD BERBASIS PROBLEM BASED LEARNING MATERI TUMBUHAN SUMBER KEHIDUPAN DI BUMI PADA PEMBELAJARAN IPAS KELAS IV SEKOLAH DASASR”, widyajaya, vol. 5, no. 2, pp. 298–311, Sep. 2025, Accessed: May 14, 2026. [Online]. Available: https://journal.mpukuturan.ac.id/index.php/widyajaya/article/view/1355