ArsaMuhammad Falik, Sugand Dede, and Somantri Lili. 2020. “The Influence of GIS Learning Material on Spatial Thinking of Students in SMA/MAN Banda Aceh ”. International Conference on Elementary Education 2 (1). Bandung, Indonesia, 480-85. http://proceedings.upi.edu/index.php/icee/article/view/653.