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All Journal Jurnal Biologi Tropis Journal of Classroom Action Research
Arifin, Rizki Dewi Sativa Lestari
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Other

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Penerapan Model Pembelajaran Berbasis Teori Gagne Dalam Meningkatkan Disposisi Kritis Dan Berpikir Kritis Biologi Siswa SMA Arifin, Rizki Dewi Sativa Lestari; Sukarso, AA; Kusmiyati; Setiadi, Dadi
Journal of Classroom Action Research Vol. 6 No. 3 (2024): Agustus 2024
Publisher : Program Studi Magister Pendidikan IPA, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcar.v6i3.8995

Abstract

Penelitian ini bertujuan untuk mengetahui penerapan model Problem Based Learning berbasis Teori Gagne dalam meningkatkan disposisi kritis dan berpikir kritis biologi siswa SMA. Penelitian ini dilakukan dengan metode desain Non-equivalent Pre-test & Post-test Control Group Designs. Data kemampuan disposisi kritis dikumpulkan menggunakan angket dan berpikir kritis dikumpulkan menggunakan tes pilihan ganda. Subyek penelitian ini adalah 72 siswa yang terbagi dalam 2 kelas (kelas X A dan X C), yang diambil dari populasi seluruh siswa SMAN 1 Narmada dengan menggunakan teknik non probabilty sampling yaitu sampling jenuh. Analisis data menggunakan uji t dan uji N-gain. Hasil penelitian menunjukkan adanya peningkatan disposisi kritis dan berpikir kritis pada kelas eksperimen dibandingkan kelas kontrol yang ditunjukkan oleh hasil uji t sebesar 0,000<0,05. Peningkatan disposisi kritis untuk kelas eksperimen tergolong pada kategori sedang (N-gain = 0,61) dan kelas kontrol dalam kategori sedang (N-gain = 0,40). Peningkatan berpikir kritis untuk eksperimen tergolong sedang (N-gain =0,61) dan di kelas kontrol dalam kategori sedang (N=gain =0,42). Kesimpulan dari penelitian ini adalah terdapat pengaruh terhadap penerapan model pembelajaran berbasis Teori Gagne berorientasi Problem Based Learning (PBL) yang dapat membangun disposisi kritis dan keterampilan berpikir kritis siswa dalam pembelajaran Biologi.
Vegetation Structure and Diversity of Mangrove Species in The Bagek Kembar Natural Forest, Sekotong, West Lombok Hidayat, XZardht Alex; Arifin, Rizki Dewi Sativa Lestari; Syukur, Abdul
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.7120

Abstract

Mangroves are a community or individual plants that live with special adaptations and form vegetation structures at the tide lines. This research aims to analyze the composition and structure of natural mangrove vegetation in the Bagek Kembar mangrove forest, Sekotong, West Lombok. Data collection used line transect and quadratic methods. The structure and composition of mangrove forest vegetation were analyzed based on density, frequency, dominance, importance value index, Shannon-Wiener diversity index (H'), species richness index (R), and evenness index (S). The research results show that the structure and composition of the natural Bagek Kembar mangrove consists of 10 species and 4 families. The highest importance index value was obtained for the Avicennia marina species with a value of 151.52 for the tree category, 172.16 for the sapling category, and 99.59 for the seedling category. The mangrove diversity index at all growth levels is included in the medium category. The species richness index at the tree growth and sampling levels is in the medium category, but at the seedling growth level it is in the low category. The evenness index at all growth levels is in the fairly even category. Furthermore, the highest density at all growth levels was obtained from the seedling level, followed by saplings and trees. The diameter class density shows an inverted “J” curve which indicates that the forest is in natural condition. Based on the research results, it can be concluded that the structure and composition of mangroves in the Bagek Kembar natural forest has a fairly stable ecosystem condition. Conservation efforts need to be increased to improve environmental sustainability.
Co-Authors Abdul Syukur Dadi Setiadi Hidayat, XZardht Alex Kusmiyati Sukarso, Aa