Abbas Fadhil Kadhim APD. 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 [Internet]. 2026 Apr. 1 [cited 2026 Apr. 30];18(2):422-394. Available from: https://lark.uowasit.edu.iq/index.php/lark/article/view/4952