“Concrete Teaching Aids For Three Dimensional Geometry Comprehension In Elementary Education: Alat Peraga Konkret Untuk Pemahaman Geometri Tiga Dimensi Pada Pendidikan Dasar” (2026) Indonesian Journal of Education Methods Development, 21(4), p. 10.21070/ijemd.v21i4.1156. doi:10.21070/ijemd.v21i4.1156.