Thinking skills, especially critical thinking skills are complex skills currently needed by every individual to analyze personal and social problems that exist in the environment with a broad and detailed format. This study aims to analyze and classify the students’ level in constructing critical thinking. The subjects of the study were 20 students of class VIII B MTs PSM Tanen Rejotangan Tulungagung in academic year 2019/2020. Data were collected through interviews and tests of critical thinking skills. The critical thinking skills test instrument consists of 10 essay questions, including 6 indicators. The test instrument used has been tested as valid and reliable as a measuring instrument. Test was validated by experts and the results of the validity, reliability, difficulty index and discrimination power levels were determined as a good test instrument to use as critical thinking skills test for students. The analysis was conducted on the results of students’ tests and categorized into five categories of critical thinking skills, consisting of very good (VG), good (G), medium (M), less (L) and very less (VL). The results showed that 75% of students had critical thinking skills with very less categories (VL) and 25% of students had less categories (L) in critical thinking. The average score of the highest critical thinking indicators obtained in the explaining indicator is equal to 41.5. The indicators analyzing have the lowest average score of 9. The results show that students’ critical thinking skills still need to be improved for future study.
Critical Thinking Skills (CTS) are the crucial skills required by nowadays generation in dealing with the 21st Century challenges. Yet, the researches focused on higher order thinking skills are still limited. This study aimed to analyze the effect of Alas Kandung-based science learning tools on students’ CTS. The research design was pretest and post-test with non-equivalent control group. The treatment given in experimental class was the implementation of Alas Kandung-based science learning tools, while the control class was taught using common method used by the teachers. The results of this study indicated that the students’ CTS in experimental class was significantly higher than the control class [F(1,47) = 11.672, p = 0.001]. In conclusion, the Alas Kandung-based science learning tools is effective in improving students’ CTS.
Ikan kelabau padi merupakan ikan asli kalimantan yang potensial untuk dikembangkan. Penelitian keragaman genetik ikan kelabau padi bertujuan untuk mengetahui keragaman genetik ikan kelabau padi yang berasal dari perairan umum Kalimantan Barat berdasarkan karakter morfometriknya. Pengukuran morfometrik dilakukan dengan analisis Component Analysis (PCA) atau komponen utama,serta hubungan kekerabatan interpopulasi dianalisis berdasarkan jarak genetik dengan program SPSS versi 17 yang disajikan dalam bentuk dendogram. Hasil analisis dendogram menyebutkan bahwa stok populasi ikan kelabau dapat dibagi menjadi dua yaitu stok populasi asal Danau Sentarum (Kapuas Hulu) dan Sungai Melawi (Melawi) serta stok populasi asal Sungai Sekayam (Sanggau) dan Sungai Kapuas (Kubu Raya). Nilai koefisien keragaman tertinggi di peroleh asal Danau Sentarum (Kapuas Hulu) 10.77%, Sungai Kapuas (Kubu Raya) 10.43%, Sungai Melawi (Melawi) 9,24% dan Sungai Sekayam (Sanggau) 6.89%.Kata kunci: kelabau padi, truss morfometrik, Kalimantan Barat
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