Effect of PBL Learning Model on Critical Thinking Skills Students Learning Course Design of Geography

Problem Based Learning (PBL) model used to teach students to think critically. The main advantages of this model lies in the phases directing students on actual issues that can improve critical thinking skills. The purpose of this study is to test the influence of the PBL learning model on students' critical thinking skills. This study is a quasi-experimental research using non-equivalent control group design. The research subject is determined based on the similarity of the average value of midterms students and measurement instruments using essay test. The results of measurements of critical thinking in the form of data and analyzed using t-test using SPSS 16.0 for Windows. Based on the data analysis, average gain score critical thinking skills in the classroom experiment that is equal to 32.3, while the control class at 14.2. The results of t-test analysis independent sample t-test shows that the PBL learning model ph-level gained 0.00 less than 0.05. This means that Ho refused and Hi accepted so there is the influence of PBL learning model on critical thinking skills.