Abbas Fadhil Kadhim, Assistant Professor Dr. “The Inability of The Learner and Difficulties in Solving Chemical Problems and Their Relationship to Academic Achievement Among Sixth-Grade Science Students in Chemistry”. lark 18, no. 2 (April 1, 2026): 422–394. Accessed April 30, 2026. https://lark.uowasit.edu.iq/index.php/lark/article/view/4952.