The current research aims to know the effect of teaching with the competition strategy on the achievement of social studies and lateral thinking among the students of the second intermediate grade The researcher adopted the experimental approach and chose the experimental design with partial control, and promised the achievement test and the lateral thinking test, and identified the research community as second-grade intermediate students in the governmental daytime intermediate and secondary schools affiliated to the Directorate of Education of Al-Qadisiyah / Center, and then she chose Benghazi School for Basic Education intentionally because of the cooperation of the staff. And the administration and the female teachers with the researcher, as the second stage consisted of an average of six divisions, and using the random drawing method, the selection was made on Division (C) to represent the experimental group, and it consisted (31) female students and class (B) to represent the control group, and it consisted of 33 students who studied class (C) according to the competition strategy. As for class (B), according to the traditional method, and after the control procedures, the students who failed were excluded statistically, and thus the total number of students who underwent the experiment became (61) female students in the two research groups, The results showed the following: 1- The students of the experimental group who study according to the competition strategy outperformed the students of the control group who studied according to the usual method in the achievement variable. 2- The students of the experimental group who studied according to the strategy of competitions outperformed the students of the control group who studied according to the usual method in the lateral thinking variable. Accordingly, the researcher presented a set of conclusions, recommendations and suggestions. Keywords: competition strategy, lateral thinking.