Ethnomathematics of The Hamalau Ketupat Monument

Abstract

Mathematics is the most basic and general learning within the school environment. There are many cultural potentials that can be used for mathematics learning. Ethnomatematics can be content that makes it easier for students to learn mathematics. With the existence of ethnomathematics research, not only are cultures increasingly recognized but they can also be used for learning mathematics which can be applied in various media or ways to make it more interesting and easy to understand. This study uses a qualitative approach with ethnographic research. Data collection techniques used are observation, interviews, and documentation. The data analysis technique used is data reduction, data presentation, and drawing conclusions. To test the validity of the data, the researcher chose technical triangulation, namely comparing or checking the results of observational data collection techniques, interviews, and documentation that had been obtained. The results of this study indicate that the structure of the Hamalau ketupat monument in Hulu Sungai Selatan Regency contains mathematical elements, namely geometric concepts in the form of (1) parallel lines and intersecting lines, (2) acute angles, obtuse angles, and right angles, (3) construct isosceles triangles, squares, rectangles, rhombuses, trapeziums, and circles, (4) construct rectangular pyramids, rectangular prisms, and cylinders.