إستخدام بعض تراكيب كاجان التعاونية في تنمية المفاهيم الفيزيائية لدى طلاب المرحلة الثانوية
The aim of the research is to identify the "effectiveness of using Kagan's cooperative structures in developing Physics concepts, among high school students". The study procedures that are consistent with the quasi- experimental approach were followed, the two-group system, and the study tools were the Physics concepts test for class students Secondary. The study sample was also selected from the students of the second year of Al-Azhar secondary school at Atfih Secondary Institute and Atfih Secondary Girls Institute in Giza Governorate for the academic year (2021-2022 AD). Including (50) male and female students. The results of the study revealed the efficiency of Kagan's cooperative structures used, which are 'Numbered Heads Together", "Team Pair Solo" and "Inside-Outside Circle" in developing Physics concepts, among members of the study group of students. Second grade of secondary school. (Published abstract)