Kania N, Saepudin A, Gürbüz F. Assessing cognitive obstacles in learning number concepts: Insights from preservice mathematics teachers. J.Res.Adv.Math.Educ [Internet]. 2025 Jul. 31 [cited 2025 Nov. 16];10(3):146-6. Available from: https://journals2.ums.ac.id/jramathedu/article/view/8638