THE EFFECT OF GROUP INVESTIGATION TECHNIQUE ON STUDENTS ACHIEVEMENT IN WRITING ANALYTICAL EXPOSITION TEXT

This study aims to discover the effect of Group Investigation technique on students’ achievement in writing analytical exposition text. It was conducted by using experimental research design. The population of this study was the second (XI) grade students of SMAN 1 Galang. There were sixty-four students involved as the sample of the study. This study was conducted with two randomized groups namely experimental and control groups. The result was class XI IPA 2 consisted of 32 students became the experimental group and class XI IPA 1 consisted of 32 students became the control group. The experimental group was taught by using Group Investigation technique while the control group was taught by using Conventional technique. The instrument of collecting the data was writing test. The data were analyzed by using t-test formula. The result shows that the value of t¬-observed (3.18) is higher than the value of t-table (2.000) (α = 0.05) with the degree of freedom (df) = 62. Thus, the null hypothesis (Ho) is rejected and alternative hypothesis (Ha) is accepted. It means that Group Investigation technique significantly affects students’ achievement in writing analytical exposition text.