Ahmad AK, Arifin IN, Aries NS, Isnanto, Assel HY. Improving Students’ Learning Outcomes in Non-Numerical Pattern Recognition Through Problem-Based Learning Assisted by a Pictorial Pattern Board in Elementary School. KPD [Internet]. 2026 Jul. 31 [cited 2026 Aug. 5];5(3):373-88. Available from: https://www.kpd.ejournal.unri.ac.id.kinaya.id/index.php/kpd/article/view/619