Hakim, Abdur Rahman, Hasanuddin, Firza Mufti Aulia, and Jung Won Lee. 2025. “The A Meta-Analysis of Project-Based Learning’s Effect on Mathematical Communication Skills Across Educational Levels and Group Sizes ”. Reforma: Jurnal Pendidikan Dan Pembelajaran 15 (2):124-40. https://doi.org/10.30736/reforma.v15i2.1250.