THE EFFECT OF COOPERATIVE LEARNING MODEL GROUP INVESTIGATION TYPE TOWARD STUDENTS LEARNING OUTCOME ON VIBRATION AND WAVESUBJECT GRADE VIII SMP NEGERI 1 LUBUK PAKAMACADEMIC YEAR 2013/2014

The purpose of this research was: to know the students learning outcome; and to know the effect of cooperative learning model group investigation type toward students learning outcome on vibration and wave subject grade viii SMP Negeri 1 Lubuk Pakam Academic Year 2013/2014. The research method was quasi experiment. The population was all students at class VIII SMP N 1 Lubuk Pakam semester II consist of 8 classes. The sample of this research conduct two classes and consist of 38 students, class VIII-A as experimental class and class VIII-D as control class and define by cluster random sampling. The data was normal distribution and homogeneity. The result that was obtained: The average value in experimental class after given treatment is 6.750 and the average value in control class after given treatment is 5.697. So it can be concluded that the students learning outcome using cooperative learning model group investigation type is better than conventional learning on vibration and wave subject grade VIII SMP Negeri 1 Lubuk Pakam academic year 2013/2014.