Andiani, Dini, Siti Dwi Rahayu, and Cecep Suwanda. “Geogebra-Assisted Teaching Experiment On Students’ Conceptual Change In Multivariable Calculus ”. Koordinat Jurnal MIPA 6, no. 2 (December 12, 2025): 125-139. Accessed July 27, 2026. http://jurnalkoordinat.org/index.php/koordinat/article/view/181.