Astriani, L. and Andini, N. M. (2025) “THE IMPACT OF VIRTUAL GEOBOARD-BASED LEARNING MEDIA ON ELEMENTARY SCHOOL STUDENTS’ SPATIAL THINKING”, Kalamatika: Jurnal Pendidikan Matematika, 10(1), pp. 31-46. doi: 10.22236/KALAMATIKA.vol10no1.2025pp31-46.