PENGARUH PENGGUNAAN PROBLEM BASED LEARNING (PBL) TERHADAP HASIL BELAJAR MATERI GEOMETRI SISWA KELAS IV DI SD IT AL-QURANIYYAH. Elementar [Internet]. 2025 Aug. 31 [cited 2026 Jun. 22];5(1):124-32. Available from: https://journal.uinjkt.ac.id/index.php/elementar/article/view/30375