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A1 محمد، شرين السيد إبراهيم AB The current research aimed at examining the effectiveness of a strategy based on some principles of TRIZ Theory in developing of achievement and the generative thinking skill among preparatory stage students in Science. The research problem is indicated through the following questions: What is the effectiveness of a strategy based on some principles of (TRIZ) Theory in developing of achievement among preparatory stage students in science? What is the effectiveness of a strategy based on some principles of (TRIZ) Theory in developing generative thinking skills among preparatory stage students in science? The researcher depended on the quasi-experimental design. The research sample was driven from the preparatory first grade students. The research tools included an achievement test in Science, and generative thinking skills test, prepared by the researcher. The research results were as follows: There was a statistical significant difference at level 0.01 between the mean score of the experimental and controlling groups’ students in the post administration of the achievement test in favor of the experimental group students. There was a statistical significant difference at level 0.01 between the mean score of the experimental and controlling groups’ students in the post administration of the generative thinking skills test in favor of the experimental group students. (Published abstract) http://search.shamaa.org/abstract_en.gif OP ص ص. 155-186 T1 فعالية استراتيجية قائمة على بعض مبادئ نظرية تريز (TRIZ) في تنمية التحصيل ومهارات التفكير التوليدي لدى تلاميذ المرحلة الإعدادية في مادة العلوم [مقال] UL http://search.shamaa.org/PDF/Articles/EGAsep/AsepNo53Y2014/asep_2014_n53_155-186.pdf النص الكامل (PDF) 1 http://search.shamaa.org/fulltext.gif