Stimuli effectiveness of teaching aids in the development of the technical capacity of secondary school students in the technical configuration items: ليلى شويل حسين. jcofarts [Internet]. 2016 Apr. 17 [cited 2024 May 3];(78):107-24. Available from: https://jcofarts.uobaghdad.edu.iq/index.php/jcofarts/article/view/750