Ethnomathematics: Geometry exploration in Rumoh Krong Bade of Nanggroe Aceh Darussalam

Abstract

Education and culture are things that cannot be separated from everyday life. Ethnomathematics appears as a bridge between culture and education, especially mathematics learning. Without realizing it, the community has carried out various activities with basic concepts and mathematical ideas. For example, counting activities include numbers, measuring (length, area, volume, and weight), art, games, trading (calculating change, profit, loss, etc.), and building architecture. This study aims to study and analyze the ethnomathematics exploration of Acehnese traditional houses to obtain basic information on the development of ethnomathematics in learning geometric mathematics, especially in the form of Krong Bade in Aceh. In this research, the type of research used was exploratory with ethnographic methods. Based on the results of the research conducted, some mathematical elements and concepts were used in carrying out the activities of making Rumoh Krong Bade in Aceh. Namely, Concepts of Plane, Solid Figures, lines, similarity, symmetry, and fractals. Without studying this mathematical theory, Aceh's community has applied mathematical concepts in everyday life. It is proven that the ethnomathematical form of the Aceh community can be discovered through the various results of mathematical activities that are owned and developed in the Aceh community, including the building activities of the Rumoh Krong Bade in Aceh.