Prasetyo, R., Handayani, L., Kusumaningrum, S. R., & Dewi, R. S. I. (2022). DEVELOPMENT OF LIGHT TEST BOARD (LTB) MEDIA TO IMPROVE STUDENTS’ LEARNING OUTCOMES IN PRIMARY SCHOOL. SENTRI: Jurnal Riset Ilmiah, 1(3), 787–794. https://doi.org/10.55681/sentri.v1i3.289