Abstrak: Penelitian ini bertujuan mengetahui kemampuan berpikir kreatif dan pemecahan masalah siswa sesudah penerapan model Project based learning dibandingkan dengan sebelum penerapan model tersebut serta korelasi antara kemampuan berpikir kreatif dan pemecahan masalah. Penelitian ini merupakan penelitian eksperimen dengan desain penelitian one-group pretest-postest group design. Populasi penelitian ini adalah siswa Madrasah Tsanawiyah Swasta Darul Ulum Banda Aceh sedangkan sampel penelitian yaitu siswa kelas VIII2 sebanyak 30 siswa. Instrumen dalam penelitian ini terdiri atas tes kemampuan berpikir kreatif dan pemecahan masalah. Analisis data dilakukan secara kuantitatif menggunakan uji t yaitu Paired Samples TTest untuk pengujian perbedaan skor yang diperoleh siswa sebelum pembelajaran (pretes) dan setelah pembelajaran (postes). Hasil penelitian menunjukkan bahwa kemampuan berpikir kreatif dan pemecahan masalah siswa setelah penerapan model Project based learning lebih baik dari sebelum penerapan. Selain itu, terdapat hubungan antara kemampuan berpikir kreatif dan pemecahan masalah siswa yang belajar melalui penerapan model Project based learning. Hubungan kemampuan berpikir kreatif dan pemecahan masalah berada pada kategori cukup. Kata kunci: Berpikir Kreatif; Pemecahan Masalah; Project based learningAbstract: This research aims to understand the students' creative thinking and problem solving ability after implementing project based learning compared to before implementation and correlation between creative thinking and problem solving ability. It is an experiment research with one-group pretest-postest group design. The population is all students in Madrasah Tsanawiyah Swasta Darul Ulum Banda Aceh, 30 students are selected as samples. The instruments used are creative thinking and problem solving test. Data analysis used t-test, i.e. paired samples T-test to examine score difference before the implementation of project based learning (pretest) and after it (posttest). The result shows that creative thinking and problem solving

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AStudents’ skills in expressing mathematical ideas in various ways have not met the expectation. Teachers need to apply the learning providing students’ opportunities to present their mathematical ideas. Utilizing the Brain-Based Learning (BBL) approach with Autograph can help students develop their mathematical communication skills. The purpose of this study was to analyze the development of students’ mathematical communication skills. Twenty-eight 10th grade students in one of the high schools in Banda Aceh participated in the study. The instruments used were a mathematical communication skills test and the activity observation. Data were analyzed using descriptive analysis. The study showed that mathematics learning applying BBL approach with Autograph contribute to developing students’ mathematical communication skills.

Learning can foster students’ character as well as their understanding. Realistic Mathematics Education (RME) is one of learning approach to foster those competences. In this research, the learningbased RME will be supported by using the Geometer's Sketchpad. This study aims to improve the students’ character through Realistic Mathematics Education using Geometer's Sketchpad on proportion topic and analyze the student's learning achievement . The subjects of this research are the 25 eighth grade students in one of public secondary school in Aceh Tamiang, Aceh. Instruments used in the study are character observation sheets and test to assess students’ learning achievement. The data analysis technique used is descriptive analysis. The result of data analysis shows that the implementation of Realistic Mathematics Education using Geometer's Sketchpad in topic of proportion can improve student's critical and creative thinking. In addition student's learning achievement met the minimal mastery criteria.

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