Maya Purwanti
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Lembar Kerja Siswa Berbasis Pendekatan Saintifik dengan Materi Struktur dan Fungsi Tumbuhan untuk Kelas VIII SMP Purwanti, Maya; Ristiono, Ristiono
Jurnal Penelitian dan Pengembangan Pendidikan Vol 5, No 3 (2021): Oktober
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jppp.v5i3.34850

Abstract

Siswa cenderung pasif dan hanya menerima informasi dari guru. Dengan demikian, kegiatan pembelajaran berpusat pada guru. Maka penelitian ini bertujuan untuk menciptakan bahan ajar lembar kerja siswa (LKPD) berbasis pendekatan saintifik dengan materi struktur dan fungsi tumbuhan untuk Kelas VIII SMP. Jenis penelitian ini yaitu pengembangan dengan menggunakan model 4-D. Metode pengumpulan data menggunakan metode nontes berupa angket yang diberikan kepada ahli desain, ahli materi, ahli bahasa untuk menguji kelayakan, serta respon guru dan peserta didik untuk menguji kemenarikan. Jenis data yang diperoleh dari hasil penelitian adalah data kualitatif yang dianalisis menggunakan data kuantitatif berupa data angka dan diinterpretasikan dengan pedoman kriteria kategori penilaian untuk menentukan kualitas produk. Hasil dari penelitian ini diperoleh rata-rata nilai validasi LKPD berbasis pendekatan saintifik adalah 93,56 %. LKPD sudah valid dan dapat digunakan dalam proses pembelajaran. Nilai rata-rata uji praktikalitas oleh guru adalah praktis dengan kriteria sangat praktis dan hasil uji praktikalitas oleh siswa adalah sangat praktis. Maka lembar kerja siswa (LKPD) berbasis pendekatan saintifik tentang materi struktur dan fungsi tumbuhan untuk Kelas VIII SMP sudah layak digunakan dalam proses pembelajaran.
Through a nutritional improvement project, Bogor District had donated powdered milk formula (PMF) for severe malnutrition children under five years.  Powdered milk formula was assumed as an unsterilized product, because it might contain spore forming bacteria.  To evaluate the bacterial contaminant of home prepared milk formula, fourty eight samples of PMF, and 50 samples of reconstitution formula, drinking water, drinking equipment, and hand were taken proporsionally from the mothers in 10 Heal Maya Purwanti; Mirnawati Sudarwanto; Winiati P. Rahayu; A. Winny Sanjaya
Forum Pasca Sarjana Vol. 31 No. 4 (2008): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Through a nutritional improvement project, Bogor District had donated powdered milk formula (PMF) for severe malnutrition children under five years.  Powdered milk formula was assumed as an unsterilized product, because it might contain spore forming bacteria.  To evaluate the bacterial contaminant of home prepared milk formula, fourty eight samples of PMF, and 50 samples of reconstitution formula, drinking water, drinking equipment, and hand were taken proporsionally from the mothers in 10 Health Community Centre around Bogor District.  Samples were analyzed for aerobic microbe, Bacillus cereus, Clostridium perfringens, and the potential of enterotoxins production.  All of the donated PMF samples exhibiting a total aerobic count of <104 CFU/g (mean 1.2 x 102 CFU/g) and B. cereus count of <103 CFU/g (mean 3.0 x 102 CFU/g for PMF containing this bacterium).  Improper home storage promote the growth of aerobic microbe and B. cereus.  Improper preparation promote the growth of B. cereus which present initially at low level (mean 7.8 x 10 CFU/g) and became 1.6 x 103 CFU/ml after the reconstitution.  Clostridium perfringens emerge at 4 samples (mean 1.5 x 10 CFU/ml) after the reconstitution.  Several isolate of B. cereus (4 from PMF, 13 from opened PMF, and 2 from reconstution formula) showed a possibility to produce diarrheagenic enterotoxin while the isolate of C. perfringens did not shown it.   Keywords: powdered milk formula, B. cereus, C. perfringens, diarrheagenic enterotoxin, preparation and storage