Fauni AM. Peningkatan hasil belajar matematika melalui model Problem Based Learning (PBL) berbantuan card sort siswa kelas lima. Math Didactic [Internet]. 30 April 2019 [dikutip 12 Juli 2025];5(1):52-4. Tersedia pada: https://jurnal.stkipbjm.ac.id/index.php/math/article/view/518