Ethnomathematics exploration of traditional games played by primary school students in West Sumatra

This research aims to explore ethnomathematics in two traditional games, cak bur and batu sigagok, played by students at a public elementary school, Nagari Tiku Utara, Tanjung Mutiara District, Agam Regency, West Sumatra Province, Indonesia. This study uses an ethnography approach to explore ethnomathematics in games and their connection to mathematics topics in elementary school. The data were collected through observing students playing the games as well as interviewing a teacher and four students. The results of the study revealed that students have sufficient knowledge regarding game tools and rules. There are different ethnomathematics aspects in the games, including counting, geometry, and probability. Meanwhile, mathematical concepts in the games related to elementary school mathematics include reading numbers, addition and subtraction of whole numbers, multiplication, flat figures, comparison, and probability. These ethnomathematics aspects in the traditional games of the Minangkabau tribe have the potential to be used to support students' mathematical concepts in elementary school.