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All Journal Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Asian Journal of Health and Applied Sciences
Heru Agung Saputra
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Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Education Immunology & microbiology Medicine & Pharmacology Nursing Public Health

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PEMBELAJARAN MENGGUNAKAN PENDEKATAN ILMIAH DALAM MENINGKATKAN KETERAMPILAN MENGEVALUASI PADA MATERI KESETIMBANGAN KIMIA Heru Agung Saputra; Noor Fadiawati; Ratu Betta Rudibyani
Jurnal Pendidikan dan Pembelajaran Kimia Vol 3, No 1 (2014): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (149 KB)

Abstract

The purpose of this research is to describe the effectiveness of scientific approach to the students’ skill in evaluating the chemical equlibrium material.  The subject of this research is all of the students in XI IPA SMA Negeri1 Bangunrejo in odd semester 2013-2014.  In addition, XI IPA 1 and XI IPA 2 act as sample.  The research method is quasi experiment with pretest-posttest control group design.  The effectiveness of this method is measured through significant n-Gain between the control class and experimental class.  The result shows that the n-Gain for evaluating in control class is 0,249 while the score for experimental class is 0,52.  Based on the hypothesis testing, the researcher concludes that,statistically, there is a significant improvement between the class which is taught through traditional way and the class which is taught through scientific approach.  This result shows that the scientific approach is an effective method to be used in the learning of chemical equlibrium material.Penelitian ini bertujuan untuk mendeskripsikan efektivitas pendekatan ilmiah terhadap keterampilan siswa dalam mengevaluasi pada materi kesetimbangan kimia.  Populasi dalam penelitian ini adalah seluruh siswa kelas XI IPA SMA Negeri 1 Bangunrejo semester ganjil Tahun 2013-2014 dengan kelas XI IPA 1 dan XI IPA 2 sebagai sampel.  Metode penelitian ini adalah kuasi eksperimen dengan Pretest-Posttest Control Group Design.  Efektivitas ini diukur berdasarkan perbedaan n-Gain yang signifikan antara kelas kontrol dan kelas eksperimen.  Hasil penelitian menunjukkan nilai rata-rata n-Gain keterampilan mengevaluasi untuk kelas kontrol dan eksperimen masing-masing 0,249 dan 0,52.  Berdasarkan pengujian hipotesis, disimpulkan bahwa secara statistik keterampilan siswa dalam mengevaluasi menunjukkan perbedaan n-Gain yang signifikan antara kelas yang menggunakan pembelajaran konvensional dengan kelas yang menggunakan pendekatan ilmiah.  Hal ini menunjukkan bahwa pembelajaran materi kesetimbangan kimia menggunakan pendekatan ilmiah efektif terhadap keterampilan siswa dalam mengevaluasi.Kata kunci:  kesetimbangan kimia, keterampilan siswa dalam mengevaluasi,pendekatan ilmiah.
Mung beans (Phaseolus radiates L.): Utilization as components of the growth medium Bacillus subtilis Fadhilah, Wasiyah Khusna; Saputra, Heru Agung; Baby, Nimisha
Asian Journal of Health and Applied Sciences Vol. 1 No. 2 (2022): Asian Journal of Health and Applied Sciences (AJHAS)
Publisher : Lighthouse Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53402/ajhas.v1i2.35

Abstract

Bacillus subtilis is a bacterial contaminant widely discovered in laboratories and used in educational needs. Synthetic media are relatively expensive, which makes it difficult for microbiology laboratories to meet large-scale bacterial growth media demands. This has encouraged researchers to find alternative media with cheaper and easily available prices, namely Mung Beans, which are known to contain protein nutrients that are good for bacterial growth, which is as much as 24%. The purpose of this study was to determine the potential of mung beans’ alternative media as a medium for bacterial growth. This research is a descriptive study and the sample used is 1 tube of a pure isolate of Bacillus subtilis. The variable of this research is mung beans as an alternative medium for the growth of Bacillus subtilis. The results were obtained by observed macroscopically and microscopically, followed by a carbohydrate fermentation test and an IMViC test. Then showed that the colonies growing on the alternative medium of mung beans were in accordance with the characteristics of the colonies growing on Nutrient Agar medium (control), which indicated that these characteristics were Bacillus subtilis. Based on the research that has been done, it can be concluded that there is a qualitative growth of Bacillus subtilis in mung beans alternative media, which means that mung beans alternative media has the potential as a growth medium for Bacillus subtilis.
Co-Authors Baby, Nimisha Fadhilah, Wasiyah Khusna Noor Fadiawati Ratu Betta Rudibyani