THOTA MURNI GULTOM; HARDI TAMBUNAN. Analysis Of Students ’ Understanding Of Mathematical Concepts In Class Viii Function Material Smp Negeri Satu Atap Tanjung Balai T.P 2021/2022. International Journal Of Humanities Education and Social Sciences (IJHESS) , [S. l.], v. 2, n. 3, 2022. DOI: 10.55227/ijhess.v2i3.287. Disponível em: https://ijhess.com/index.php/ijhess/article/view/287. Acesso em: 29 aug. 2026.