Ethnomathematics: Mathematical Concept in the Local Game of Tong Tong Galitong Ji for High School

Authors : Elly SUSANTİ

Pages : 219-231

Doi:10.17275/per.21.12.8.1

View : 10 | Download : 5

Publication Date : 2021-01-01

Article Type : Research Paper

Abstract :The aim of this research was to describe the results of the exploration of mathematical concepts in Malang City’s traditional game Tong Tong Galitong Ji or Nasi Goreng Kecap. This research is a qualitative study with an ethnographic approach. Data were collected through field observations, documentation insert ignore into journalissuearticles values(photographing and video recording);, and in-depth interviews. Data analysis to explore the internal structure of mathematical concepts in the five stages of the game Tong Tong Galitong Ji was performed by taxonomic analysis. Exploration of the concept of basic mathematical operations insert ignore into journalissuearticles values(addition, subtraction, and multiplication); occurs in stages one through five, exploration of the concept of arithmetic modulo 6 and 3 operations in stages two through four, and exploration of the concepts of arithmetic sequence and probability in stage five of the game Tong Tong Galitong Ji. Stage five features basic mathematic operations of addition, subtraction, and multiplication insert ignore into journalissuearticles values(division excluded);, as well as the concept of arithmetic sequence during the determination of punishment quantity. Punishment quantity is determined by operating any one of the numbers 10, 4, and 7 decided on in stage three with a natural number insert ignore into journalissuearticles values(ji, ro, lu, …, n); in stage five. The concept of probability also appears in stage five during simultaneous finger showing.
Keywords : ethnomathematics, mathematical concept, tong tong galitong ji