THE EFFECT OF GROUP INVESTIGATION METHOD ON STUDENTS’ ABILITY IN WRITING PROCEDURE TEXT

This study is an experimental design. It was intended to prove that there is a significance effect of using group investigation method on students’ ability in writing procedure text. The population of this study was the eighth grade student of SMP Negeri 2 Lintongnihuta in Academic year 2019/2020 which consisted of six parallel classes. The total number of population was 240 students. Two classes were selected as the sample by using random sampling technique. The total of the sample was 60 students. The samples were divided into two groups namely experimental and control group. The experimental group was taught by using group investigation method while the control group was taught by conventional teaching. Writing test was conducted as instrument for collecting data. The topic of the test was how to operate a computer.The result of the data  analysis showed  that t-calculated was 4.874 at the level of significance p = 0.05 while t-table is 2.00 at the level. It was found that t-calculated was higher than t-table (4.874 > 2.00). Thus, the alternative hypothesis (Ha) is accepted and it means that there is a significance effect of using group investigation method on students’ ability in writing procedure text.