THE EFFECT OF COOPERATIVE LEARNING MODEL TYPE GROUP INVESTIGATION ON STUDENTS ACHIEVEMENT OF STATIC FLUID IN CLASS XI OF SMA NEGERI 1 PERBAUNGAN A.Y. 2013/2014

The objectives of this research is To find out the effect of Cooperative Learning Model Group Investigation Type on students learning outcomes in subject static fluid in class XI SMA Negeri 1 Perbaungan A.Y. 2013/2014.The research method was quasi experimental. The populations were all XI IPA grade students in semester II that consist of 8 classes SMA Negeri 1 Perbaungan. The samples of this research conduct two classes and consist of 62 students, 31 from experiment class and 31 from control class and define by random cluster sampling. The results that were obtained: pre-test mean value of experiment class was 42.26 and 40.16 for control class and then post-test mean value of the experiment class was 80.32 and 62.90 was the mean value for control class. Standard deviation in pre-test were 7.62 in experiment class and 7.80 in control class and standard deviation in post-test for two classes were 6.94 and 8.64. Normality of the test result from the both samples was normal and homogenous. In the testing of hypothesis for pre-test, the criteria is: H0 is accepted if tcount < ttable and H0 is rejected if tcount has another score, where ttable obtained from list of distribution t. From the calculation of test t for concept mastery using &#945; = 0.05, obtained tcount = 1.07, where ttable = 2.00. It means, experiment class and control class have same ability. And for post-test, the criteria is : Ha is accepted if tcount > ttable and is rejected if tcount has another score. From the calculation of t-test one side for &#945; = 0.05, obtained tcount = 8.75, where ttable = 1.67. So, there was the Effect of Cooperative Learning Model Type Group Investigation on Students Achievement of Static Fluid in class XI of SMA Negeri 1 Perbaungan A.Y. 2013/2014. Based on observation that done by observers with using observation sheet of student character, the characters value on last meeting of experiment and control class are 86.73 and 74.55. Its conclude that the character of students in experiment class better than control class.