“THE EFFECTOF MIND MAPPING TO IMPROVETHE ABILITY TO DOTHE OPERATION OF SUMMING DOWNWARD ROWSOF DYSCALCULIASTUDENTS” (2021) Primary: Jurnal Pendidikan Guru Sekolah Dasar, 10(3), pp. 494–500. doi:10.33578/10.33578/jpfkip.v10i3.8066.