Ethnomathematics of Nusantara: Bridging Culture, Cognition, and Mathematics Education: An Interdisciplinary Exploration Indigenous Knowledge, Islamic Architecture, Digital Pedagogy

This monograph presents a comprehensive and interdisciplinary investigation into the field of ethnomathematics within the Indonesian archipelago. It argues that mathematics is not merely a universal, abstract discipline but a cultural product shaped by human logical thinking, social practices, and local wisdom. The book is divided into three core parts: Theoretical Foundations: It establishes a robust framework exploring the relationship between human logical thinking and ethnomathematics, demonstrating how cultural practices like weaving (Batak Toba Ulos and Mandailing textiles) and architecture embody sophisticated geometric and logical reasoning. Architectural Case Studies: It provides an in-depth ethnomathematical analysis of the Syahrun Nur Grand Mosque, revealing how Islamic architectural elements such as domes, minarets, and ornamental lattices are embedded with concepts of geometry, symmetry, and proportion. The implications for religious tourism and cultural identity are examined from a sociological perspective. Pedagogical and Technological Integration: It bridges theory and practice by exploring the implementation of ethnomathematics in formal education. This includes a systematic literature review on integrating Nusantara culture through ethnopedagogy and the development of Android-based learning media, demonstrating how technology can preserve and promote local heritage while enhancing student engagement and conceptual understanding. By weaving together cognitive science, cultural sociology, architectural analysis, and modern pedagogy, this collection offers a holistic perspective for educators, researchers, and policymakers seeking to create more contextual, humanistic, and culturally sustaining mathematics education.