“Implementation of STAD Type Cooperative Learning Model Assisted by Pop Up Book Media to Improve Description Writing Skills of Students of Class VC UPT SDN 064025 Medan”. Primary: Jurnal Pendidikan Guru Sekolah Dasar 14, no. 4 (July 31, 2025). Accessed August 28, 2025. https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/176.