PENGARUH MODEL PROBLEM BASED LEARNING (PBL) TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS SISWA SMA GAJAH MADA BANDAR LAMPUNG. lentera [Internet]. 2022 Mar. 11 [cited 2026 May 10];12(1):75-84. Available from: https://jurnal.stkippgribl.ac.id/index.php/lentera/article/view/452