PASARIBU, Torop Marombun; SIDABUTAR, Ropinus; TAMBUNAN, Lois Oinike. Pengaruh Pendekatan Open-Ended Terhadap Kemampuan Pemahaman Konsep Matematis Pada Materi Perpangkatan dan Bentuk Akar di Kelas IX SMP Swasta HKI Pulosiborna. Innovative: Journal Of Social Science Research, [S. l.], v. 4, n. 1, p. 3576–3589, 2024. DOI: 10.31004/innovative.v4i1.8304. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/8304. Acesso em: 10 jun. 2026.