Abstract This study aimed to determine the students' creative thinking ability through the Auditory Intellectually Repetition (AIR) cooperative learning model in the Arithmetic Series material in the X Science class of Public Senior High School 2 PEUSANGAN. The population in this study were all students of class X Science at Public senior High School 2 PEUSANGAN, Bireuen Regency with research samples was class X IPA 4 as experimental class I, and X IPA 3 as experimental class II, with the total number of students, were 35 for each class which was selected by using purposive sampling. Data analysis was carried out through a quantitative descriptive. To find out the difference in the average, it was used two-sample- t-test. The results of the study by testing the hypothesis using the t-test at a significant level of α = 0.05 obtained t_count> t table, namely 1.70> 1.67, so it was concluded that students' creative thinking ability through Auditory Intellectually Repetition (AIR) cooperative learning model was better rather than students' creative thinking skills through Expository learning models. Keywords: Creative Thinking Ability; AIR Cooperative Model; Expository Learning Abstrak Penelitian ini bertujuan untuk mengetahui kemampuan berpikir kreatif siswa melalui model pembelajaran kooperatif Auditory Intellectually Repetition (AIR) pada materi Barisan dan Deret Aritmetika di kelas X IPA SMA Negeri 2 Peusangan. Populasi dalam penelitian ini adalah seluruh siswa kelas X IPA SMA Negeri 2 Peusangan Kabupaten Bireuen dengan sampel penelitian kelas X IPA 4 sebagai kelas eksperimen I, dan X IPA 3 sebagai kelas eksperimen II, dengan jumlah 35 siswa untuk masing-masing kelas yang dipilih secara purposive sampling. Analisis data dilakukan secara kuantitatif deskriptif. Untuk mengetahui perbedaan rerata digunakan uji t dua sampel. Hasil penelitian dengan pengujian hipotesis menggunakan uji t pada taraf signifikan α=0,05 diperoleh , yaitu sehingga diperoleh kesimpulan bahwa kemampuan berpikir kreatif siswa melalui model pembelajaran kooperatif Auditory Intellectually Repetition (AIR) lebih baik daripada kemampuan berpikir kreatif siswa melalui model pembelajaran ekspositori. Kata Kunci: Kemampuan Berpikir Kreatif; Model Kooperatif AIR; Model Ekspositori
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