Sinaga, A.I. and Ananda, L.J. 2024. DEVELOPMENT OF BIG BOOK LEARNING MEDIA TO TRAIN STUDENTS’ THINKING SKILLS IN THEME 1 SUBTHEME 1 FOR FIFTH GRADE ELEMENTARY SCHOOL STUDENTS. Jurnal Merah Putih Sekolah Dasar. 2, 1 (Oct. 2024), 165–171. DOI:https://doi.org/10.24114/jmpsd.v2i1.61307.