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All Journal Jurnal Biologi Tropis Journal of Classroom Action Research
Miftahul Janah
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Other

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Prestasi Belajar Ditinjau dari Kemampuan Representasi Matematis Siswa dalam Menyelesaikan Soal Statistika Miftahul Janah; Sripatmi; Syahrul Azmi; Nani Kurniati
Journal of Classroom Action Research Vol. 5 No. 4 (2023): November
Publisher : Program Studi Magister Pendidikan IPA, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcar.v5i4.5701

Abstract

Penelitian ini bertujuan untuk mendeskripsikan prestasi belajar ditinjau dari kemampuan representasi matematis siswa kelas XI MAN 2 Mataram dalam menyelesaikan soal statistika. Jenis penelitian yang digunakan adalah penelitian deskriptif kuantitatif dan kualitatif. Teknik penarikan sampel pada penelitian ini adalah Purposive Sampling, diperoleh kelas XI MIPA 5 sebanyak 32 orang dengan subjek wawancara sebanyak 6 orang. Metode pengumpulan data menggunakan tes prestasi belajar, tes kemampuan representasi matematis dan wawancara. Teknik analisis data yang digunakan adalah analisis data kuantitatif dan kualitatif. Hasil penelitian menunjukkan bahwa: (1) Tidak ada siswa yang memiliki prestasi belajar dengan kategori tinggi, prestasi belajar kategori sedang hanya 1 orang dan sisa lainnya berada pada prestasi belajar kategori rendah sebanyak 31 orang. Siswa dengan kemampuan representasi matematis kategori tinggi terdapat 10 orang, kategori sedang terdapat 17 orang siswa dan kategori rendah terdapat 5 orang siswa. (2) Kemampuan representasi matematis kategori tinggi hanya terdapat 1 orang siswa yang berada pada prestasi belajar kategori sedang dan sisa lainnya berada pada prestasi belajar kategori rendah. Siswa yang memiliki kemampuan representasi matematis kategori sedang dan kategori rendah juga berada pada prestasi belajar kategori rendah.
Shallot (Allium cepa L.) Growth and Yield under Nitrogen and Phosphorus Fertilization in Former Long Bean Fields Miftahul Janah; Anjar Pranggawan Azhari; Afifah Farida Jufri
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
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.v26i3.12685

Abstract

Shallot (Allium cepa L.) is a high-value horticultural crop whose productivity depends on adequate nutrient availability and fertilizer management. Former yardlong bean land has the potential to improve fertilizer efficiency through residual nitrogen derived from biological nitrogen fixation. This study aimed to evaluate the effects of nitrogen (N) and phosphorus (P) fertilizer rates and their interaction on the growth and yield of shallot cultivated on former yardlong bean land. Four nitrogen rates (25%, 50%, 75%, and 100% of the recommended dose) and two phosphorus rates (50% and 100% of the recommended dose), each replicated three times, were used in the factorial Randomized Complete Block Design experiment, which was carried out in Rembige Village, Mataram City, between February and April of 2026. Analysis of variance and the Honestly Significant Difference test at the 5% significance level were used to evaluate the data. At 42 and 49 days following planting, nitrogen had a substantial impact on both the number of bulbs per clump and plant height. While the interplay between nitrogen and phosphorus had a substantial impact on leaf chlorophyll content, phosphorus had a considerable impact on bulb number, bulb diameter, and fresh bulb weight. The combination of 75–100% recommended nitrogen and 100% recommended phosphorus produced the best growth and yield, indicating that former yardlong bean land can enhance fertilizer use efficiency in shallot cultivation.
Co-Authors Anjar Pranggawan Azhari Jufri, Afifah Farida Nani Kurniati Sripatmi Syahrul Azmi