Andiani D, Dwi Rahayu S, Suwanda C. Geogebra-Assisted Teaching Experiment On Students’ Conceptual Change In Multivariable Calculus . Koordinat [Internet]. 2025Dec.12 [cited 2026Apr.19];6(2):125-39. Available from: https://jurnalkoordinat.org/index.php/koordinat/article/view/181