“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, The Indonesian Journal of Primary School Education, vol. 2, no. 1, pp. 165–171, Oct. 2024, doi: 10.24114/jmpsd.v2i1.61307.