Siti Rahayu Lubis and Khairuddin 2026. Development of a Challenge-Based Match The Cups Game Media to Train Interpersonal Communication Skills of Students at SMP Muhammadiyah 7 Medan. International Journal of Education, Vocational and Social Science . 5, 03 (Aug. 2026), 8468-8499. DOI:https://doi.org/10.63922/ijevss.v5i03.6211.