Fadilah, M. et al. 2025. DEVELOPMENT OF FLASH CARD LEARNING MEDIA ON THE MATERIAL OF THE BODY’S DEFENSE SYSTEM FOR 11TH GRADE HIGH SCHOOL STUDENTS. Algebra : Jurnal Pendidikan, Sosial dan Sains. 5, 4 (Dec. 2025), 1308–1315. DOI:https://doi.org/10.58432/39wwvc25.