“UPAYA MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR MATEMATIKA SISWA KELAS VII MELALUI MODEL PEMBELAJARAN GROUP TO GROUP EXCHANGE (GGE)”, epsilon, vol. 2, no. 2, Mar. 2022, Accessed: May 10, 2026. [Online]. Available: https://jurnal.stkippgribl.ac.id/index.php/epsilon/article/view/542