AU - صالح، صالح محمد AU - خليل، خليل رضوان AU - يوسف، نجلاء محمود AU - الحسيني، ولاء عبد الحي AB - This study aimed to reveal the effectiveness of proposed unite based on STEM approach in developing problem solving skills professional for industrial secondary students. To achieve the objectives of the study were to draw a list of the most important skills professional availability of the fourth year for Industrial Secondary students, and uses some of STEM approach, and preparation of Worksheets for the students, and teacher's guide, and the preparation of the achievement test, and problems solving skills test .The findings showed the effectiveness of a proposed unite based on STEM approach in developing problems solving skills professional for industrial secondary students. Then according to findings, the researcher presented a set of recommendation and suggestion. (Published abstract) http://search.shamaa.org/abstract_en.gif OP - ص ص. 250-295 T1 - فاعلية وحدة مقترحة قائمة على مدخل STEM في تنمية مهارات حل المشكلات المهنية لدى طلاب التعليم الثانوي الصناعي [مقال] UL - https://foej.journals.ekb.eg/article_238541_aab0790a314d5d2be32073fe56d2c7b0.pdf النص الكامل (PDF) 1 http://search.shamaa.org/fulltext.gif