This paper aimed at discovering the effect of critical thinking skills after the Ethno science-based Direct Instruction learning model was implemented in physics learning. It was conducted in High School 3 of Bengkulu City. This paper used the Quasi Experiment. The sample was gained using sampling purposive technique that was XI Natural Science 2 as experiment class and XI Natural Science 4 as control class. The results obtained indicated that the post-test average score of critical thinking skills acquired in the class using the Ethno science-based Direct Instruction learning model and the class using a conventional learning model. Based on the data analysis result using a t-test, it showed that the Ethno science-based Direct Instruction learning model influenced the students' critical thinking skills. The post-test average score of experiment class using the Ethno science-based Direct Instruction learning model and the post-test score of control class using the conventional model showed that there was a significant difference. Based on the hypothesis test, it was found that the alternative hypothesis (Ha) could significantly be accepted. This paper concluded that the students' critical skill raised effectively when using Ethno science-based Direct Instructional Learning Model especially for Physics Learning and the paper suggests not to use conventional model.

Penelitian ini bertujuan untuk mengetahui peningkatan kemampuan berpikir kritis setelah diterapkan Model Direct Instruction berbasis etnosains dalam pembelajaran fisika. Jenis penelitian ini adalah Quasi Experiment. Hasil penelitian menunjukkan bahwa rata-rata posttest dan N-gain kemampuan berpikir kritis yang diperoleh kelas eksperimen dengan pembelajaran Model Direct Instruction berbasis etnosains lebih tinggi daripada kelas kontrol dengan perlakuan pembelajaran konvensional. Berdasarkan hasil analisis data, kelas eksperimen dan kelas kontrol mengalami perbedaan peningkatan skor N-gain yang signifikan dengan kelas eksperimen memperoleh skor N-gain sebesar 0.73 (kategori tinggi) dan kelas kontrol memperoleh skor N-gain sebesar 0.37 (kategori sedang) sehingga dapat disimpulkan terdapat peningkatan kemampuan berpikir kritis dengan penggunaan Model Direct Instruction berbasis etnosains dalam pembelajaran fisika.Kata Kunci: Etnosains, Model Direct Instruction, Kemampuan Berpikir KritisThis research was aimed to determine the improvement of critical thinking skills after applied the model Direct Instruction with ethno-science-based learning in physics learning. This type of research was Quasi Experiment. The results of the study showed that the average posttest and N-gain critical thinking skills were obtained in the class with the model Direct Instruction with ethno-science-based learning and the class with conventional learning treatments. Based on the results of data analysis, the experimental class and the control class experienced a significant increase in the N-gain score with the experimental class obtained an N-gain score of 0.73 (high category) and the control class obtained an N-gain score of 0.37 (medium category) so it can be concluded that there are the increase in critical thinking skills using the Model Direct Instruction with ethno-science-based learning in physics learning.Keywords: Ethno-science, Direct Instruction Model, Critical Thinking Ability

The problem examined in this study was how students respond to learning with the Direct Instruction. Ethnoscience-based that connected the intensity and intensity of material with Bengkulu’s dol music in teaching and learning activities. The aim of the researchers was to analyze students’ responses to learning with the model Direct Instruction based on ethnoscience to find out whether the responses given by students were positive or negative. An analysis data using Rasch Model Approach. Student responses are said to be positive if students feel happy about the learning component used, the learning component used is new, students are interested in implementing the same learning in subsequent learning and students are interested in the learning components used. The results of the research obtained were 92% of students gave a positive response to learning with the model Direct Instruction based on ethnosains. In other words, students are happy with the components of learning that are applied.