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