Septia, T. and Shofiya 2024. Ethnomathematics Exploration on Calculation of Holy and Purifying Water Tubs at Raudlatul Ulum Islamic Boarding School. Noumerico: Journal of Technology in Mathematics Education. 2, 2 (Aug. 2024), 110–115. DOI:https://doi.org/10.33367/jtme.v2i2.4136.