Aprillia Putri Pradinar, Wiryanto, and Endah Budi Rahaju, “DEVELOPMENT OF ETHNOMATHEMATICS-BASED TEACHING MATERIALS USING KUE LUMPUR (MUD CAKE) ON FRACTION TOPICS TO IMPROVE NUMERACY AND SELF-EFFICACY OF FOURTH-GRADE STUDENTS”, SJIIPS, vol. 15, no. 2, pp. 1469–1480, May 2026.