Nasir Dakhel Sultan AL-Zarkani L. The Effect of the Contradiction-Based Motivation Strategy on the Science Achievement and Educational Engagement of Fifth Grade Primary School Students. lark [Internet]. 2026 Jan. 1 [cited 2026 Apr. 4];18(1):892-71. Available from: https://lark.uowasit.edu.iq/index.php/lark/article/view/4899