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A1 الشمري، فرح عبود صالح. A2 المرشدي، عماد حسين عبيد A2 الشمري، محمد هادي شنين AB This research paper aims to identify to the effect of flippd classroom on first class girl students' marks of chemistry retaining the information first class girl students of chemistry For identification of this the aim of this research paper, To check the validity of the two hypotheses, the researcher has set an experiment lasted full course and according to the following procedures: An experimental design (partial seizure) for two valent groups one of them experimental and the other is control for distance test in chemistry. This paper is limited to first class girl students in one of schools in Karbala. For processing data statistically, the following statistical means used: (T test for two equal independent samples, difficulty equations, strength of item discrimination, activity of wrong alternatives, Kjord Richardson equation -20, and Chisquare) and the following results had been found Thers is no statistical difference at level (50.0) between the average of experimental group's marks who study chemistry according to the strategy of inverted class and the average of control group's marks who study the same material according to the traditional way of achievement. and set the following recommendations: The Effect of the Strategy of Fillibed classroom in Developing the creative thinking for the secondary second class students Chmstry, the Efficiency of Fillibed classroom in Acquiring the Biological Concepts and Environmental Awareness of the Fourth SCIENTIFIC Grade in Chmstry ،Also the researcher suggested setting similar papers of this one on other stages and subjects to check the activity of educational groups' way in teaching in other variables other than achievements and retaining. (Published Abstract) http://search.shamaa.org/abstract_en.gif ID 127365 OP ص ص. 1043-1057 T1 أثر استراتيجية الصف المقلوب في تحصيل طالبات الصف الأول المتوسط في مادة الكيمياء واستبقاء المعلومات لديهن [مقال] UL 1 http://search.shamaa.org/fulltext.gif https://www.iasj.net/iasj/article/141218 النص الكامل (PDF)