Ethnomathematical Practices of the Tharu Community in Terai, Nepal

Abstract

This study explores the mathematical practices embedded in the cultural traditions of the Tharu community, with a focus on their counting systems, measuring techniques, and modeling patterns. Through ethnographic observations and field interviews, the research reveals how the Tharu people employ a base-20 counting system influenced by the Nepali numbering system and use physical objects for arithmetic operations. Their traditional measuring techniques rely on body-referenced units such as the Haat (hand) and Anguli (finger) for length, along with culturally specific units like the Muthi and Lota for volume. Additionally, the study examines the geometric patterns found in Tharu crafts, highlighting the community’s application of symmetry and ratios. The findings illustrate the significance of these ethnomathematical practices in the daily life of the Tharu people, offering insight into how indigenous mathematical knowledge can enrich the broader understanding of mathematics education. This research contributes to the field of ethnomathematics by documenting and analyzing the ways in which cultural groups integrate mathematical concepts to solve practical problems and preserve their heritage.