INNOVATION IN LEARNING MEDIA: FLASHCARDS FOR THE INDONESIAN NATIONAL ANTHEM: A RELIGIOUS, PHILOSOPHICAL, AND PSYCHOLOGICAL REVIEW IN ELEMENTARY SCHOOLS. Jurnal Merah Putih Sekolah Dasar, The Indonesian Journal of Primary School Education [Internet]. 2025 Sep. 30 [cited 2026 Apr. 22];3(1):30-7. Available from: https://jurnal.unimed.ac.id/2012/index.php/jmpsd/article/view/69325