“Peningkatan Hasil Belajar Matematika Melalui Model Pembelajaran Problem Based Learning Berbantuan Media Konkret Siswa Kelas 1 SDN Sawah Besar 01”. Jurnal Pendidikan Guru Profesional, vol. 3, no. 1, June 2025, pp. 1-7, https://doi.org/10.26877/jpgp.v3i1.1690.