Rahmawati, Retno, Fathul Niam, and Ahmad saifudin. 2021. “Manajemen Penerapan Model Problem Based Learning Terhadap Hasil Belajar Matematika Materi Diagram Batang Siswa Kelas IV SDN Garum 1”. Patria Educational Journal (PEJ) 1 (2), 1-8. https://doi.org/10.28926/pej.v1i2.97.