The Effect of Problem Based Learning Models and Interest to Learn Physics on Students Critical Thinking Skills of Class XI Students at SMA Negeri 1 Selayar

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This research is a true-experiment research using a 2x2 factorial design which aims to find the influence of the problem-based learning model and interest in learning physics on students' critical thinking skills. Sampling in this study used a simple random sampling technique to obtain a sample of 60 students in the experimental class and 60 students in the control class. This research was carried out by providing treatment in the form of a problem-based learning model on static fluid and dynamic fluid material. Data on interest in learning physics was collected using a questionnaire, while data on critical thinking skills used tests. Research data was analyzed using the Two Way Anova statistical test. The results of the first study showed that There are differences in critical thinking skills between students who are taught using the problem-based learning model and students who are taught using the discovery learning model. Second, it states that there is no interaction between the learning model and interest in learning physics on critical thinking skills. Third, stating that for high interest in learning, there are differences in critical thinking skills between students who are taught using the problem-based learning model and students who are taught using the discovery learning model. Then the results of the fourth research show that for low interest in learning, there are differences in critical thinking skills between students who are taught using the problem-based learning model and students who are taught using the discovery learning model.