This research is motivated by the child’s (age 4-5 years) ability to know about the geometric shapes in TK Sari Madu that has not developed yet. This research aimed to find out how to increase the ability to know about the geometric shapes through the geometric random cards for children age 4-5 years in TK Sari Madu, and to find out the amount of increasing ability of children age 4-5 years t…