Tersedia online di http://ejournal.iain-tulungagung.ac.id/index.php/jtm Jurnal Tadris Matematika 3(2), November 2020, 195-206 ISSN (Print): 2621-3990 || ISSN (Online): 2621-4008 Diterima: 16-11-2020 Direvisi: 25-12-2020 Disetujui: 28-12-2020 d DOI: http://dx.doi.org/10.21274/jtm.2020.3.2.195-206 Pengaruh Model Pembelajaran Think Pair Share Menggunakan Media Google Classroom terhadap Kemampuan Komunikasi Matematis Mahasiswa IAIN Tulungagung Nadya Alvi Rahma 1 , Masithoh Yessi Rochayati 2 , Muniri 3 1,3 Jurusan Tadris Matematika, IAIN Tulungagung. Jl. Mayor Sujadi Timur No. 46 Tulungagung 2 SMK Negeri 1 Turen-Malang. Jl. Panglima Sudirman No. 41 Turen, Kab. Malang e-mail: nadyaalvirahma@gmail.com 1 , yessi.rochayati@gmail.com 2 , muniri@iain-tulungagung.ac.id 3 ABSTRAK Kemampuan komunikasi matematis sangat penting dimiliki oleh mahasiswa karena melalui komunikasi, mahasiswa dapat menyampaikan gagasan, pengetahuan, dan argumen matematika. Fakta di lapangan menunjukkan bahwa kemampuan komunikasi matematis mahasiswa Jurusan Tadris Matematika di IAIN Tulungagung tergolong rendah. Rendahnya kemampuan komunikasi matematis mahasiswa antara lain masih ditemukan kesalahan dalam penulisan simbol matematika pada suatu persamaan dan belum runtutnya dalam menyelesaikan suatu masalah matematika. Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran Think Pair Share (TPS) menggunakan media Google Classroom untuk meningkatkan kemampuan komunikasi matematis mahasiswa IAIN Tulungagung. Memadukan model pembelajaran TPS dengan media Google Classroom belum pernah diteliti untuk dilihat pengaruhnya terhadap kemampuan komunikasi matematis mahasiswa. Metode penelitian ini adalah kuasi eksperimen dengan jumlah sampel 40 orang mahasiswa semester 5 tahun akademik 2019/2020 Jurusan Tadris Matematika IAIN Tulungagung yang menempuh matakuliah Persamaan Diferensial. Proses pengambilan data dilakukan dengan memberikan pre- test dan post-test sebelum dan setelah melaksanakan pembelajaran yang menggunakan model pembelajaran TPS dengan media Google Classroom. Selanjutnya, data hasil pre-test dan post-test dianalisa dengan uji Wilcoxon karena data tidak bersebaran normal. Hasil penelitian ini menunjukkan bahwa penerapan model pembelajaran TPS dengan menggunakan media Google Classroom dapat meningkatkan kemampuan komunikasi matematis mahasiswa. Kata kunci: komunikasi matematis, Think Pair Share, Google Classroom ABSTRACT Mathematical communication skill is very important for university students because through communication, students can convey their mathematical ideas, knowledge and arguments. However, the facts show that the written mathematical communication skills of students majoring in Mathematics Education at IAIN Tulungagung are classified as low. The low written mathematical communication skill of students is indicated by errors in writing mathematical symbols on an equation and unsystematic writing of the steps to solve mathematical problems. This study aimed to determine the effectiveness of the Think Pair Share (TPS) learning model using Google Classroom media to improve the written mathematical communication skill of IAIN Tulungagung students. Several previous researchers have reviewed the use of Google Classroom in learning, but it was not integrated with the TPS learning model and did not focus on the influence on students' mathematical communication skill. The study sample was 40 students of the 5 th semester in 2019/2020 academic year majoring in Mathematics Education at IAIN Tulungagung who took the Differential Equation course. The data collection was carried out by providing a pretest and posttest before and after implementing the learning using the TPS model with Google Classroom media. Then, the data from the pretest and posttest results were analyzed using the Wilcoxon test because the data were not normally distributed. The results of this study showed that the TPS learning model using Google Classroom media could improve the students' mathematical communication skill. Key words: mathematical communication, Think Pair Share, Google Classroom