PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SISWA PADA MATERI INDEKS HARGA DIKELAS XI.1 SMA NEGERI 11 PALEMBANG. AL-MUQADDIMAH . 2026;2(1):52-59. Accessed May 25, 2026. https://jurnal-muqaddimah.or.id/index.php/Al-Muqaddimah/article/view/45