<![CDATA[This study aims to develop ethnomathematics-based teaching materials that are valid, practical, and effective in improving third-grade elementary school students' motivation and mathematics learning outcomes in fractions. The teaching materials integrate Kediri’s traditional foods, Gethuk Pisang and Tahu Takwa, as contextual ethnomathematics content relevant to students’ daily lives. The study employed the ADDIE development model, consisting of Analysis, Design, Development, Implementation, and Evaluation. The trial was conducted at SDN Sepawon 1 and SD Negeri Sepawon 2, Kediri Regency, involving 26 students in the initial trial and 51 students in the main trial, divided into experimental and control groups. Data were collected through observation, interviews, questionnaires, and tests and analyzed using qualitative and quantitative methods. The results showed that the teaching materials were valid based on material expert (79.51%) and media expert (82.62%) assessments, practical based on teacher responses (80.5%), and very practical based on student responses (91.1%). Statistical tests indicated significant differences in learning outcomes (p = 0.026) and motivation (p = 0.007) between the groups. The developed materials are feasible and effective for elementary mathematics learning. Further research may develop more multimodal ethnomathematics materials to accommodate diverse learning styles.]]>
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