Sapoetra BP, Hardini ATA. Efektivitas Model Pembelajaran Problem Based Learning ditinjau dari Kemampuan Pemecahan Masalah Matematika di Sekolah Dasar. basicedu [Internet]. 2020 Aug. 13 [cited 2025 Aug. 20];4(4):1044-51. Available from: https://jbasic.org/index.php/basicedu/article/view/503