Group Investigation Learning Model Influence on Critical Thinking Skills of MAN 6 Students Jakarta

Abstract

This study aims to examine whether the model of study group investigation has an effect on the critical thinking
skills of MAN 6 Jakarta students. This research uses quasi experiment approach with pre test and post test
control group design. Subjects in this study consisted of two classes, namely experimental class and control
class, homogeneous based on the value of report cards semester 1. The result of students' critical ability is
measured by using essay questions. The critical thinking skills score is determined based on the results of the
pretest and posttest scores (gainscore). The result of the research shows that the group investigation model
influences students' critical thinking ability. This can be seen from the data analysis t value = 3,432 and
significance of two tail 0.01 smaller than α = 0,05. It can be seen that the average of students' critical thinking
ability of experiment class is 25,64, higher than control class 19,88.