SALSABILA, Zahrina; PERMATASARI, Dian. Single Subject Research: Can a Contextual Approach to Ratio Material Facilitate Understanding of Concepts for Mentally Retarded Students?. 12 Waiheru, [S. l.], v. 10, n. 1, p. 28–41, 2024. DOI: 10.47655/12waiheru.v10i1.200. Disponível em: https://12waiheru.kemenag.go.id/index.php/journal/article/view/200.. Acesso em: 21 nov. 2024.