Communication ability in a second language (L2) is becoming one of the most important skills in this era of globalization, as it supports cross-cultural interactions and increases opportunities in various professional contexts. Nevertheless, many learners experience difficulties in achieving an adequate level of fluency in L2, mainly due to challenges related to the learning environment and the lack of opportunities for active communication practice. Therefore, this study aims to examine the effectiveness of implementing cooperative learning strategies in an effort to improve second language (L2) communication skills among students. This study used a quasi-experimental method with a quantitative approach, where data were obtained through a series of tests and observations to measure the development of students' abilities. The results of the data analysis showed that the implementation of cooperative learning strategies was significantly able to improve L2 communication skills compared to conventional learning methods which were more individualistic and passive. In addition, this study also highlights the importance of the role of interaction between students in the learning process as a factor that supports the improvement of communication skills more effectively.
                        
                        
                        
                        
                            
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