Ethnomathematics learning is learning that connects cultural and mathematical concepts by looking at mathematics as a cultural product. Material reduction of natural numbers can be learned using Indonesian children's games, namely Sundanese culture. Mathematical learning activities that can be done is to understand the basic facts of addition to a collection and reduction that is presented with the technique of discarding. The subject of this study uses 82 teachers, 1 teacher guides 1 until 9 elementary school students with a total of elementary school students used 273. Students learn mathematics with ethnomathematics learning endog-endogan game. After the data are collected, the researcher processes the data using a qualitative descriptive method, which describes the documentation of the data with the students' responses.Benefits in this learning students will play together with other students so that fun, 163 happy, 49 student enthusiastic in learning mathematics, 49 students says learning mathematics is easy and 12 students eliminate misconceptions in reduction operations. Mathematical abstracts can be reduced and promote Indonesian cultural products in the development of mathematical learning innovations.
Ethnomathematics Learning , Sundanese Culture