Fina Tazkiya. THE IMPORTANCE OF MASTERING MATHEMATICAL CONCEPTS IN SOLVING MATHEMATICAL PROBLEMS IN ELEMENTARY SCHOOLS. EZRA SCIENCE BULLETIN [Internet]. 2023 Jun. 21 [cited 2026 Mar. 27];1(1):11-7. Available from: https://ezra.krabulletin.com/index.php/ezrascibin/article/view/3