This study aims to determine the effect of Brunner’s theory on the ability to calculate addition operations in group B children at RA Ummatan Wahidah. This study uses a quantitative research appr…
Jusuf, Amir Abadi - Baker, Richard E. - King, Thomas E. - Jeffrey, Cynthia G. - Wulandari, Etty Retno - Lambke, Valdean C.. - Veronika NPS, Sylvia - Martini, Dwi