Sari, Siska Permata. 2024. “Ethnomathematics: Exploration of The Concept of Geometry and Arithmetics Social at Jam Gadang Bukittinggi in Learning Primary School Mathematics”. Jurnal Pendidikan Tambusai 8 (2):30543-50. http://jptam.org/index.php/jptam/article/view/17914.