Djatmiko. “Meningkatkan Penguasan Materi Program Linear Dua Variabel Melalui Metode Student Teams Achievement Divisions (STAD) Dengan Media Geogebra ”. Didactical Mathematics 4, no. 1 (April 30, 2022): 253–266. Accessed April 28, 2025. https://ejournal.unma.ac.id/index.php/dm/article/view/2411.