Studentsâ learning achievement of SMP N 5 Metro heavenât been accomplished thoroughly. Students were not active in learning process because the model of learning process is teacher centered, so students will be passive and it causes studentsâ learning achievement havenât accomplished KKM (Criteria of Thoroughness Minimum) in school. The purpose of the research that is to improve learning achievement of nature science of seventh greade in SMP N 5 Metro academic year 2011/2012. Based on research data can be concluded that the impelementation of cooperative learning method by snowball throwing type can improve studentsâ learning achievement of seventh grade in SMP N 5 Metro academic year 2011/2012. The increasing of studentsâ learning achievement that be obtained from pra-PTK until second cycle is 34,04%. Based on that result, the researcher suggests to teacher to use this learning method in learning process. Kata Kunci: Snowball Throwing, Hasil Belajar.
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