Aulina Prayoga Ardhana and Ike Yuli Mustika Dewi (2025) “OPTIMALISASI PROBLEM BASED LEARNING PADA MATA PEMBELAJARAN MATEMATIKA SEKOLAH DASAR”, JURNAL ILMIAH PENELITIAN MAHASISWA, 3(1), pp. 568–576. doi: 10.61722/jipm.v3i`1.755.