<![CDATA[mathematical instruction often lacks relevance to students’ real-life contexts, necessitating more meaningful and contextualized approaches. This study aims to integrate geometric concepts and ethnomathematics through the utilization of ketupat a traditional Indonesian cultural artifact as a culturally grounded instructional medium. A descriptive qualitative method was employed, using literature review and contextual observation of the geometric structure of ketupat. The findings reveal that ketupat encompasses geometric elements such as symmetry, three-dimensional forms, woven patterns, and calculations of volume and surface area. Moreover, ketupat holds significant symbolic meaning within Indonesian culture, making it a relevant bridge between mathematical concepts and local values. The study concludes that using ketupat as a contextual medium enhances students’ conceptual understanding of geometry and strengthens the integration of cultural values within mathematics education.]]>
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