Penerapan Model Pembelajaran Kooperatif Tipe Snowball Throwing Pada Pembelajaran Segiempat Untuk Meningkatkan Aktivitas Dan Prestasi Belajar Siswa SMPN 1 Lingsar Kelas Vii-1 Tahun Pelajaran 2012/2013

: This research aims to improve the activity and student learning outcomes SMPN 1 Lingsar class VII-1 on the rectangular material through the implementation of cooperative learning model type thowing Snowball. This research is a classroom action research conducted in two cycles. The results showed that the application of the learning model can improve the activity and student learning outcomes. This is demonstrated by the student activity score relatively high on the first cycle and very high in the second cycle. While the average score on the evaluation of student learning has increased in each cycle, namely in the first cycle an average score of 58.2 on the evaluation study with classical completeness 50% and the second cycle the average score on the evaluation study reached 85.74 with classical completeness 89%. These achievements show that the application of cooperative learning model type Snowball Throwing on the rectangular material can increase the activity of learning and student achievement SMP Negeri 1 Lingsar class VII-1 of the school year 2012/2013