<![CDATA[This study applies the Problem Based Learning (PBL) model assisted by MATLAB in mathematics learning to develop critical thinking skills of grade X high school students. The purpose of this study is to determine the effectiveness of the application of the PBL model assisted by MATLAB in improving the critical thinking skills of grade X students of SMA Negeri 1 Mutiara. The population in this study were all grade X students of SMA Negeri 1 Mutiara, totaling 210 students, so that two classes were taken as samples, namely the experimental class and the control class with a total of 60 students. The type of research used was a quasi-experimental study with data collection through initial and final tests, while data analysis used the t-test. The results showed that the average value of the experimental class was higher, namely 82.83 compared to the control class, namely 72.67. The results of the hypothesis test obtained t-count> t-table, namely 5.597> 2.002, so it can be concluded that the application of the Problem Based Learning model assisted by MATLAB can improve students' mathematical critical thinking skills. Theoretically, this research strengthens the study of digital technology integration in mathematics learning, while practically it provides an innovative, interactive learning alternative and encourages student learning activity for high school teachers.]]>
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