Rahmawati, S. et al. 2026. Improving Students’ Mathematical Reasoning Ability through the Use of the Joyful Learning Model Assisted by GeoGebra. Kognitif: Jurnal Riset HOTS Pendidikan Matematika. 6, 1 (Jan. 2026), 33–43. DOI:https://doi.org/10.51574/kognitif.v6i1.1755.