Haikal F. Penerapan Model Pembelajaran Problem Based Learning (PBL) Untuk Meningkatkan Hasil Belajar Matematika Siswa Kelas 1 SD. jtp [Internet]. 2023 Sep. 18 [cited 2026 May 9];2(4):97-107. Available from: https://jurnal.sainsglobal.com/index.php/gpp/article/view/1078