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م. تغريد خضير هذال, م.م. يوسف حسين محمد. Deep understanding skills of basic education students and their relationship to their ability to solve mathematical problems. cbej [Internet]. 2023 May 21 [cited 2024 May 7];1(SI):299-313. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/10353