Naja, Finsensius, and Sofia Sao. 2024. “Peningkatan Berpikir Matematis Siswa Sekolah Dasar Melalui Implementasi Model Problem Based Learning”. Jurnal Cendekia : Jurnal Pendidikan Matematika 8 (2), 1049-59. https://doi.org/10.31004/cendekia.v8i2.3124.