“DEVELOPMENT OF INTERACTIVE POWERPOINT LEARNING MEDIA THEME 5 ECOSYSTEM SUBTHEME 1 ECOSYSTEM’S COMPONENT FOR FIFTH GRADE STUDENTS OF SDN 007 TEBING KARIMUN”. Primary: Jurnal Pendidikan Guru Sekolah Dasar, vol. 9, no. 4, Aug. 2020, pp. 421-3, https://doi.org/10.33578/10.33578/jpfkip.v9i4.7953.