<![CDATA[This study aims to test the effectiveness of a learning model as an alternative to overcome BIPA expository writing learning problems. The learning model in question is a collaborative model assisted by series image media. The population of this study is all students of grade XI ESG São Pedro, Comoro for the 2024 school year consisting of seven classes and totaling 314 students. The sample of this study is only one class, namely class 11 CT/A which totals 43 students. The sampling technique used is purposive sampling. The research method used is quantitative with the type of Pre-Experimental research and the design is one group pretest-posttest. The data collection technique used in this study is a test technique, which is using learning test results. The learning test in question is an expository writing skills test before applying collaborative learning assisted by series image media (pretest) and an expository writing skills test after applying collaborative learning assisted by series image media (posttest). The data in this study uses descriptive and inferential statistical calculations by calculating student learning outcomes, improving student learning outcomes, data normality and hypothesis testing. From the results of data analysis and hypothesis testing using paired sample t tests, it can be concluded that the application of collaborative learning assisted by series image media is effective on expository writing skills.]]>
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