“DEVELOPING POP-UP BOOK WITH THE TOPIC OF HOW LIVING THINGS ADAPT TO ENVIRONMENT IN THE FOURTH GRADE OF ELEMENTARY SCHOOL”. Primary: Jurnal Pendidikan Guru Sekolah Dasar, vol. 9, no. 3, June 2020, pp. 323-3, https://doi.org/10.33578/jpfkip.v9i1.7898.