Kania, Nia, Aep Saepudin, and Ferit Gürbüz. 2025. “Assessing Cognitive Obstacles in Learning Number Concepts: Insights from Preservice Mathematics Teachers”. JRAMathEdu (Journal of Research and Advances in Mathematics Education) 10 (3):146-66. https://doi.org/10.23917/jramathedu.v10i3.8638.