Ethnomathematics on Surabaya Regional song notation

Abstract

Music correlates to mathematics in the form of pattern concepts, formulas, and calculations that can be used as variations of ethnomathematics-based learning. One of the mathematics learning’s goals, according to the National Council of Teachers of Mathematics (NCTM), is a cultural purpose. This research aims to describe the results of mathematical element analysis in Surabaya regional songs. The research method used was qualitatively descriptive. The data sources used in this study were researchers, literatures, and field practitioners. Data collection techniques used were interviews and documentation studies. The documentation study was carried out by making a literature assessment corresponding to the required data. The data analysis technique used was Miles and Huberman’s models encompassing data reduction, data presentation, and conclusion drawing stages. The results of study showed that there is a mathematical element in the regional song from Surabaya. The mathematical elements found in the analysis of block notation scores and number notations are summation of same-number fractions, summation of different fractions, multiplication of fractions, data processing in modes form, as well as data presentation in the form of tables, bar diagrams, and line charts. In addition to finding the mathematical elements in Surabaya regional songs, this study also proves that there is a correlation between music and mathematics.