Earliand, A.R. et al. 2026. The Effect of GeoGebra-Based Instruction on Students’ Conceptual Understanding of Exponential Functions. Vygotsky: Jurnal Pendidikan Matematika dan Matematika. 8, 1 (Feb. 2026), 65–76. DOI:https://doi.org/10.30736/voj.v8i1.1333.