The purposes of this research are to describes the process and the results of the use of the ethnomathematics play in improving the number sense of childrens in groups BII TKK Santa Clara Ruteng in 2017. Respondents of the research involved of 21 children from groups BII at TKK Santa Clara Ruteng in 2017. The research method used is spiral action research model Kemmis & Taggart are consisting o…