The creative thinking-based learning model can develop students' divergent thinking in learning, including learning writing skills. Previous research showed low enthusiasm for learning and incomplete academic results. This research aims to determine the effectiveness of implementing a writing skills learning model based on creative thinking with project-based learning (PJBL) and problem-solving-based learning (PSL). This research used a quantitative approach with 55 students in the fifth semester of the Arabic Language Education Department (PBA) at STIQ Amuntai. This type of research is a quasi-experiment using pre-tests and post-tests in one group. The data test is a paired sample test using t-test statistics with the help of the SPSS application. The result was effectiveness of implementing the learning model, with the difference in academic achievement results for writing skills of 12.26, the results of t -4.801, and the results of significance sig. (2-tailed), namely p-value = 0.000 > ɑ (0.05), which indicates that hypothesis H0 is rejected and hypothesis H1 is accepted.
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