فاعلية الأنشطة داخل الفصل المقلوب في تنمية بعض مهارات إدارة قواعد البيانات لدى طلاب المرحلة الثانوية التجارية المتقدمة
The objective of the research is to develop the skills of database management in the students of the advanced commercial secondary stage - fourth grade - in the advanced technical school - Department of Management - Olive Department of Education - for the academic year 2017/2018, through the practice of activities in the flipped classroom, and to achieve the objectives of the research follow the descriptive approach The study group consisted of (64) students. The research tools were in the cognitive achievement test and the observation card for the practical performance of the database management skills. The results of the study showed that there was a statistically significant difference between the average scores of the students of the control group and the average scores of the experimental group students in favor of the experimental group. (Activities within the flipped classroom). This result emphasizes the importance of educational activities in the development of knowledge and the practical performance of the database management skills of fourth-grade students in high schools in commercial schools. (Author’s abstract)