نشریه بین المللی روانشناسی ، علوم اجتماعی و آموزشی 1 1 Developing Critical Thinking in Classroom Developing Critical Thinking in Classroom 22 28 10.22051/jera.2021.31891.2698 FA saeed Educational Management department, Firoozabad Branch, Islamic Azad University, Firoozabad Iran In the modern world there are different opinions and ideas, and each individual should be able to choose the best of them to criticize and analyze. This requires critical thinking. As such, its significance in every individual\'s life is beyond doubt. Critical thinking is so important through its effect on the society that the great educational specialists consider its development as the main purpose of education. In this study, through the use of conceptual analysis research, it is dealt with the analysis of the nature and the scale of critical thinking and its training in classroom. On the whole, it is concluded that it is possible to develop the students\' critical thinking skills through encouraging them and providing them with thinking behavioral models. The kind of attempt is worthy in which the individual can think critically to solve the real world\'s problems. Critical thinking does not develop by itself but should be taught theoretically and practically in educational communities In the modern world there are different opinions and ideas, and each individual should be able to choose the best of them to criticize and analyze. This requires critical thinking. As such, its significance in every individual\'s life is beyond doubt. Critical thinking is so important through its effect on the society that the great educational specialists consider its development as the main purpose of education. In this study, through the use of conceptual analysis research, it is dealt with the analysis of the nature and the scale of critical thinking and its training in classroom. On the whole, it is concluded that it is possible to develop the students\' critical thinking skills through encouraging them and providing them with thinking behavioral models. The kind of attempt is worthy in which the individual can think critically to solve the real world\'s problems. Critical thinking does not develop by itself but should be taught theoretically and practically in educational communities /downloadfilepdf/51403