RIANTO, Bambang Adi; WARDANI, Naniek Sulistya. Upaya Peningkatan Hasil Belajar Matematika Melalui Problem Based Learning Peserta Didik Kelas II SD. Innovative: Journal Of Social Science Research, [S. l.], v. 4, n. 1, p. 5932–5941, 2024. DOI: 10.31004/innovative.v4i1.8196. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/8196. Acesso em: 14 may. 2026.