Djatmiko. “Meningkatkan Penguasan Materi Program Linear Dua Variabel Melalui Metode Student Teams Achievement Divisions (STAD) Dengan Media Geogebra ”. Jurnal Didactical Mathematics 4, no. 1 (April 30, 2022): 253–266. Accessed June 20, 2026. https://www.ejournal.unma.ac.id/index.php/dm/article/view/2411.