Yuanita, PutriSolfitri, TitiSiregar, Syarifah Nur2015-03-032015-03-032015-03-03wahyu sari yenihttp://repository.unri.ac.id/xmlui/handle/123456789/6784This study aims to observe perception and activity of college students during the taking place of Elementwy Statistics learning on the implementation of lesson study to the students of Mathematics Education on academic year 2011/2012. This study is performed on odd semester 2011/2012. There are 4 cycles in this study, the stages in each cycle are Planning, Doing and Seeing. The outcome which be gotten is the materials of subject, it is the result of input and discussion of team teaching, the perception of college students toward the learning activity is good and the activity of college students is more increased than before.enCoperative learning model technique TSTSPerception student and Activity StudentPersepsi Dan Aktivitas Mahasiswa Terhadap Pembelajaran – Dengan Model Pembelajaran Kooperatif Tematik TSTS Dalam Pelaksanaan Lesson Study Pada Mata Kuliar Statistika Dasar Program St Di Pendidikan Matematika Universitas RiauUR-Scientific Work Lecturer