Pengaruh Model Case Based Learning Berbantuan Padlet Terhadap Keterampilan Berpikir Kritis Siswa Kelas XI Fase F Pada Materi Pelestarian Keanekaragaman Hayati di SMA Negeri 21 Surabaya

Model Case Based Learning merupakan model pembelajaran yang berfokus pada analisis pemecahan masalah sehingga keterampilan berpikir kritis siswa dapat ditingkatkan Tujuan Penelitian ini adalah : 1) Untuk menganalisis respon siswa terhadap model Case Based Learning berbantuan padlet terhadap keterampilan berpikir kritis siswa kelas XI Fase F di SMA Negeri 21 Surabaya, 2) Untuk menganalisis hubungan model Case Based Learning berbantuan padlet terhadap keterampilan berpikir kritis siswa kelas XI Fase F di SMA Negeri 21 Surabaya.

Jenis penelitian ini menggunakan Quasi Experiment. Teknik pengambilan sampling menggunakan teknik Purposive Sampling karena  dipilih berdasarkan rata-rata hasil belajar kognitif yang cenderung sama. Teknik pengumpulan data menggunakan instrument tes berupa soal HOTS (High Order Thinking Skills) untuk menguji keterampilan berpikir kritis siswa dan menggunakan instrument non-tes berupa lembar observasi keterlaksanaan pembelajaran Case Based Learning dan angket untuk menganalisis respon siswa terhadap model Case Based Learning. Teknik analisis data menggunakan Uji Normalitas, Uji Homogenitas, dan Uji Non Parametrik Mann Whitney. Hasil penelitian menunjukkan respon siswa kelas kontrol sebesar 1.539 dan kelas eksperimen sebesar 1.527 sehingga tingkat respon siswa berada dalam kategori sangat baik. Hasil analisis Uji Non Parametrik Mann Whitney menunjukkan bahwa nilai Sig (2-tailed)  0,311 > 0,05 sehingga tidak ada perbedaan nilai rata-rata antara kelas kontrol dan kelas eksperimen dalam menerapkan model Case Based Learning terhadap keterampilan berpikir kritis siswa. 

Kata kunci: Case Based Learning, keterampilan berpikir kritis, pelestarian keanekaragaman hayati

Case Based Learning is a learning model that focuses on analyzing problem solving so that students' critical thinking skills can be improved. The purpose of this research are: 1) To analyze student responses to the Case Based Learning model assisted by padlet on critical thinking skills of students in class XI Phase F at SMA Negeri 21 Surabaya, 2) To analyze the relationship of Case Based Learning model assisted by padlet to critical thinking skills of students in class XI Phase F at SMA Negeri 21 Surabaya.

This type of research uses Quasi Experiment. The sampling technique used Purposive Sampling technique because it was selected based on the average cognitive learning outcomes that tend to be the same. The data collection technique uses a test instrument in the form of HOTS (High Order Thinking Skills) questions to test students' critical thinking skills and uses a non-test instrument in the form of an observation sheet for the implementation of Case Based Learning and a questionnaire to analyze students' responses to the Case Based Learning model. Data analysis techniques used Normality Test, Homogeneity Test, and Mann Whitney Non-Parametric Test. The results showed that the response of control class students was 1.539 and the experimental class was 1.527 so that the level of student response was in the very good category. The results of the Mann Whitney Non Parametric. Test analysis show that the Sig (2-tailed) value is 0.311> 0.05 so that there is no difference in the average value between the control class and the experimental class in applying the Case Based Learning model to students' critical thinking skills. 

Keywords: Case Based Learning, critical thinking skills, biodiversity conservation