Anis Cholis, Ribut Margo Mulyanto, Achmad Yusuf, Sari Cahya Putri, and Tuti Mutia. 2026. “Evaluating the Effectiveness of The Smarts Didi Model in Enhancing Teacher Competency for Differentiated Instruction in Indonesia: A Confirmatory Factor Analysis Approach”. International Journal of Geography, Social, and Multicultural Education 3 (3):1-13. https://doi.org/10.26740/ijgsme.v3n3.p1-13.