Opera, Jessy2013-08-282013-08-282013-08-28Nofianti,S.Pdhttp://repository.unri.ac.id:80/handle/123456789/5208Penerapan Model Pembelajaran Kooperatif Tipe Two Stay Two Stray (TSTS) Untuk Meningkatkan Hasil Belajar Matematika Siswa Kelas VIIIThis research aims to improve mathematics learning outcomes VIII a grade students at SMP N 2 Cerenti second semester of academic year 2011/2012 to implement cooperative learning model two stay two stray. This study is a class action consisting of two cycles. Data collected in this study is a teacher and student activity data and student learning outcomes data. Teacher andstudent activity data collected through observation techniques using observation sheets, while the student learning outcomes data gathered through the test (repeat daily) use problems. Results showed that the teacher in the learning activities are more appropriate to the lesson plan, as well as with student activities that can be seen from the first cycle is the percentage of students who achieve KKM 15% of the 20 students, then increased in the second cycle with 70% percentage of completeness, when seen from the results of learning, there is a decrease in the first cycle, the percentage of students at mastery base score is 55%, then on the second cycle after the given measure student mastery percentage increased to 70%. So it can be concluded that by implementing cooperative learning model TSTS can improve student learning outcomes.en-UScooperative learninglearning outcomestwo stay two straystudent Paper Post Degree