Ethnomathematics: Mathematical Concepts in Sigale-Gale Statues

This study aims to investigate the mathematical concept of Sigale-gale statue so that it can be utilized as an instructional resource in mathematics. The employs qualitative approaches using ethnographic approach. researcher served data collector for study, and informants were Batak people. Primary data-gathering methods include observation, interviews, documentation, comprehensive literature reviews. analysis technique is descriptive form reduction, presentation, conclusion drawing. results revealed Sculpture contains concepts such plane geometry, spatial reflection transformation, dilation angles. Ethnomathematics innovation well a breath fresh air classroom learning process used are not monotonous, ethnomathematics-based models, student worksheets, visual videos illustrate on Statue used, thereby increasing motivation interest, outcomes also increasing.