., Masdalilah. “MENINGKATKAN HASIL BELAJAR MATEMATIKA DENGAN MODEL STAD DI KELAS VI SD NEGERI NO. 028 LUMBAN DOLOK”. JURNAL HANDAYANI PGSD FIP UNIMED 6, no. 1 (December 19, 2016). Accessed January 31, 2025. http://103.242.233.34/index.php/handayani/article/view/5044.