Meri, Efendi and Risma Margaretha, Sinaga and Erlina, Rufaidah (2020) The Effectiveness of Multicultural- Based Social Sciences Teaching Materials for Optimizing Nationality Character of Students in Junior High School One Natar South Lampung Regency. International Journal of Research and Innovation in Social Science (IJRISS), 4 (7). pp. 469-473. ISSN 2454-6186