Alfa Yoga Winarta , Y., Sulianto, J. and Purnamasari, I. 2026. Article Effects of Kosifacay Media-Assisted Problem-Based Learning on Fifth-Grade Students’ Learning Interest and Conceptual Understanding of Light: A Quasi-Experimental Study. Jurnal Pendidikan Terapan. 4, 4 (Sep. 2026), 684–697. DOI:https://doi.org/10.61255/jupiter.v4i4.2115.