Abstrak. Penelitian ini bertujuan untuk mengetahui perbandingan model pembelajaran problem based learning dan inkuiri terbimbing terhadap kemampuan berpikir kritis peserta didik pada materi listrik dinamis. Penelitian ini adalah penelitian quasi experimental dengan rancangan penelitian post-test only control group design. Data yang diperoleh berupa data hasil kemampuan berpikir kritis. Instrumen yang digunakan berupa instrumen tes kemampuan berpikir kritis. Uji hipotesis dari uji-t sampel berkorelasi menghasilkan nilai thitung sebesar 2,03 dan ttabel sebesar 1,99 dengan keputusan uji thitung > ttabel atau 2,03 > 1,99 maka H0 ditolak sehingga terdapat perbedaan antara model problem based learning dan model inkuiri terbimbing terhadap kemampuan berpikir kritis peserta didik kelas X SMA Negei 8 Bandar Lampung. Perbedaan tersebut dilihat dari nilai rata-rata keseluruhan dari indikator berpikir kritis yang berasal dari nilai rata-rata setiap indikator kemampuan berpikir kritis dari kedua model pembelajaran yaitu nilai rata-rata keseluruhan model problem based learning sebesar 75 dan nilai rata-rata model inkuiri terbimbing sebesar 71. Berdasarkan perbedaan nilai tersebut dapat dinyatakan bahwa model problem based learning lebih baik daripada model inkuiri terbimbing. Kata kunci: Inkuiri Terbimbing, Kemampuan Berpikir Kritis, Problem Based LearningAbstract. The objective of this research was to compare whether there was significant effect of problem based learning model than quided inquiry model upon critical thinking skill. This study belongs to quasy experimental and used this study belongs to quasi experimental and used the posttest only control group design". The collected data was score critical thinking skill. The instrument that was used was in the form of test. Data obtained in the form of data from critical thinking skills. The instrument used in the form of critical thinking skills test instruments. Test the hypothesis of a correlated samples t-test produces a value tcount and ttable 2.03 and 1.99 with testing decision tcount > ttable or 2.03 >1.99, then H0 is rejected so that the conclusions of this study. There is a difference of problem based learning models and guided inquiry models to the critical thinking skills of students of class X SMA Negei 8 Bandar Lampung. The differences are seen from the overall average of the indicators of critical thinking from the average value of each indicator of the ability to think critically of the learning model that is the average value of the whole of the model problem based learning by 75 and the average value model of guided inquiry at 71. It can be concluded that the model problem based learning is better than the model of guided inquiry.
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