Setianingsih, S., Arofah, F. A., Suyono, S., & Pristiani, R. (2026). Concrete-to-Abstract Transitions and Affective Factors in Fourth-Grade Mathematics: A Systematic Review of Pedagogical Challenges and Merdeka Curriculum Implementation. Jurnal Review Pendidikan Dasar : Jurnal Kajian Pendidikan Dan Hasil Penelitian, 12(1), 32–58. https://doi.org/10.26740/jrpd.v12n1.p32-58