Artita, A.D. et al. 2026. The Effect of the Deep Learning Approach on Eighth-Grade Students’ Mathematical Problem-Solving Ability. Postulat : Jurnal Inovasi Pendidikan Matematika. 7, 1 (Jul. 2026), 18–29. DOI:https://doi.org/10.30587/postulat.v7i1.12072.