This study aims to determine the difference in geometric ability between children aged 4-5 years who attend public and private kindergartens in Mandah District, Indragiri Hilir Regency. The samples in this study were all children aged 4-5 years in State Kindergarten and Private Kindergarten, Mandah District, Indragiri Hilir Regency, totaling 30 children. The method used is t-test with cooperati…