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All Journal Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Jurnal Fisika Unand Jurnal KALANDRA
Desi Indriani, Desi
Jurusan Fisika, FMIPA, Universitas Andalas
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Other

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PENERAPAN MODEL KOOPERATIF NHT DISERTAI FLASH CARD TERHADAP HASIL BELAJAR SUBMATERI SEL DAN JARINGAN Indriani, Desi; Hardigaluh, Basuki; Marlina, Reni
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 5, No 8 (2016): Agustus 2016
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (87.261 KB)

Abstract

Abstrak: Penelitian ini bertujuan untuk mengetahui penerapan model kooperatif tipe Numbered Heads Together (NHT) disertai media flash card terhadap hasil belajar siswa pada sub materi sel dan jaringan di kelas VII SMP Negeri 7 Pontianak. Bentuk penelitian ini adalah Quasi Experimental Design dengan rancangan Nonequivalent Control Group Design. Sampel penelitian ini adalah kelas VII B (kelas eksperimen) dan kelas VII A (kelas kontrol). Teknik pengambilan sampel dengan cara intact group. Instrumen yang digunakan berupa tes pilihan ganda berjumlah 20 butir. Rata-rata skor hasil belajar kelas eksperimen 16,36 sedangkan kelas kontrol 13,32. Hasil uji U Mann-Whitney diperoleh Z hitung < - Ztabel (-4,93 < -1,96), hal ini menunjukkan terdapat perbedaan hasil belajar siswa yang diajarkan dengan model pembelajaran kooperatif tipe Numbered Heads Together (NHT) disertai media flash card dengan yang diajarkan menggunakan model pembelajaran konvensional. Kata Kunci: Numbered Heads Together, Media Flash Card, Hasil Belajar Abstract: This study aimed to determine the application of the cooperative model type Numbered Heads Together accompanied flash card media of the learning outcomes at the cell and tissues sub material in class VII SMPN 7 Pontianak. This research forms are Quasi Experimental with Nonequivalent Control Group Design. The sample of this research are VII B (experiment class) and VII A (control class). The sampling technique was intact group. The instruments used were 20 multiple choice questions. The average score of the experimental group?s learning outcome was 16,36 while that of control group?s learning outcome was 13,32. The test result of U Mann-Whitney showed Zcount < -Ztable (-4,93 < -1,96), which means that there is a discrepancy in learning outcomes of students who were taught with cooperative model type Numbered Heads Together accompanied flash card media by using conventional learning. Keywords: Numbered Heads Together, Flash Card Media, Learning Outcome
ANALISIS PERBANDINGAN ANOMALI FREKUENSI KRITIS LAPISAN ES DAN F2 IONOSFIR YANG MERUPAKAN PREKURSOR GEMPA ACEH PADA TANGGAL 07 APRIL 2010 Indriani, Desi; Pujiastuti, Dwi; -, Ednofri
Jurnal Fisika Unand Vol 4 No 3: Juli 2015
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.4.3.%p.2015

Abstract

ABSTRAKTelah dilakukan analisis kualitatif untuk melihat perbandingan anomali frekuensi kritis lapisan Es dan F2 ionosfir saat terjadinya gempa Aceh pada tanggal 07 April 2010.Data ionosfir yang digunakan berasal dari hasil rekaman ionosonda FMCW, LAPAN Kototabang, Sumatera Barat berupa ionogram pada tanggal 24 Maret – 14 April 2010. Proses scaling ionogram dilakukan terlebih dahulu untuk mendapatkan nilai harian fo pada masing-masing lapisan.  Dari hasil scaling didapatkan nilai median untuk menentukan nilai batas atas dan batas bawah.  Prekursor akan terlihat apabila nilai median melebihi batas atas atau batas bawah.  Hasil penelitian menunjukkan bahwa prekursor mulai muncul pada 14 hari sebelum gempa pada lapisan foF2. Total kemunculan prekursor pada lapisan foEs adalah 4 kali dan pada lapisan foF2 sebanyak 8 kali. Dari analisis yang telah dilakukan, terdapat ketidaksamaan respon yang terjadi pada masing-masing lapisan ionosfir. Penyebab terjadinya ketidaksamaan respon diduga karena jarak masing-masing lapisan ionosfir terhadap matahari berbeda sehingga radioaktifitas yang dihasilkan juga berbeda.Kata kunci : frekuensi kritis, ionosfir, prekursor gempa.AbstractA qualitative analysis has been conducted to compare the anomaly of critical frequency of Es and F2 layer of ionospheric during Aceh earthquake on April 7th, 2010. The records of ionosonda FMCW of LAPAN Kototabang West Sumatra was used as ionospheric data in ionogram form. The scalling process of ionogram was done in advance to get the daily point of fo for each layer.  From scaling founded median to determine up boundary and down boundary. When the median bigger than up boundary or down boundary, precursor will be seen. Resault show that the precursor firstly appear at 14 days before the earthquake on layer foF2. Total appearence of precursor on layer foEs is 4 times and on layer foF2 is 8 times. Based on the analysis, it was found that inequality response was happened in each layer of ionosphere. Expectedly, the cause of inequality response was happened because of the distance differences for each ionosphere layer to the sun so resulted different radioactivity.Keywords: critical frequency, ionosphere, earthquake precursors.
Aplikasi Bioteknologi untuk Pengolahan Tandan Kelapa Sawit dan Sampah Organik Menuju Kemandirian Pupuk di Desa Kampung Tengah, Siak Isda, Mayta Novaliza; Fitmawati; Sujarwati; Titrawani; Lestari, Wahyu; Afrilliani, Aneka; Yovita, Cici; Stefani, Dea; Indriani, Desi; Sari, Dwi Retno; Sari, Fajrika; Zulva, Naya Septia; Fahira, Nidia; Ramadhan, Wahyu; Sirait, Yudhistio Artia Perdamaian
KALANDRA Jurnal Pengabdian Kepada Masyarakat Vol 3 No 6 (2024): November
Publisher : Yayasan Kajian Riset Dan Pengembangan Radisi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55266/jurnalkalandra.v3i6.452

Abstract

Empty oil palm bunches (OPEFB) contain important nutrients such as nitrogen (N), phosphorus (P), potassium (K), and micronutrients such as boron (B), copper (Cu), zinc (Zn), iron (Fe), and manganese (Mn). These nutrients can be released into the soil and are available for plant growth with empty oil palm bunches. Composting is a natural recycling method and returns organic matter to the biological cycle. OPEFB as an organic fertilizer has great potential to help increase soil fertility and productivity. Utilization of organic waste in the form of liquid compost can be done using a composter. Processing waste into compost can have quite high economic value. This community service activity received a positive response from the Kampung Tengah village community because it increased knowledge related to the processing of OPEFB waste and also organic waste so that it becomes useful and economically valuable compost.
Co-Authors Afrilliani, Aneka Basuki Hardigaluh Dwi Pujiastuti Dwi Retno Sari, Dwi Retno Ednofri - Fahira, Nidia Fitmawati Fitmawati Mayta Novaliza Isda Sari, Fajrika Sirait, Yudhistio Artia Perdamaian Stefani, Dea Sujarwati Titrawani Wahyu Lestari Wahyu Ramadhan Yovita, Cici Zulva, Naya Septia