Karo-karo, Luter. “UPAYA PENINGKATAN HASIL BELAJAR MATEMATIKA MELALUI MODEL KOOPERATIF TIPE STAD KELAS IX-5 SMP NEGERI 1 NAMORAMBE”. JURNAL HANDAYANI PGSD FIP UNIMED 6, no. 2 (July 2, 2017): 75–81. Accessed January 31, 2025. http://103.242.233.34/index.php/handayani/article/view/6520.