Nr, Yusuf Devan, Lilis Marina Angraini, Astri Wahyuni, and Putri Wahyuni. 2026. “Students’ Mathematical Problem-Solving Ability in Solving Quadratic Function Problems”. Kognitif: Jurnal Riset HOTS Pendidikan Matematika 6 (2):486-97. https://doi.org/10.51574/kognitif.v6i2.3450.