Reasoning skill is crucial for students to translate the learning material provided by the teacher in online mode during the COVID-19 pandemic. Many teachers choose analogy-based learning to explain a concept by bringing the concept to facts that are close to students’ daily lives. Analogy-based learning that was carried out face-to-face before the pandemic improved students’ reasoning skills, and now its implementation is tested in online mode. The study aims to analyze differences in reasoning skills in each indicator area and their factors. A significant difference was obtained by involving 72 students and doing a t-test for two data groups in the two sample groups. Students’ skills to identify problems and apply concepts have increased even though it is not as good as the increase in both aspects on face-to-face mode. The other two aspects (exploring the facts and concluding) are very unsatisfactory. There is a striking discrepancy between analogy-based learning during and before the pandemic with an unchanged syntax but different situations. The reduction in each reasoning indicator ranged from 10% to 25%. Signal constraints, a less supportive learning environment, and delayed communication between teachers and students are the main factors. This study provides an overview of discrepancies that can be addressed more wisely by strengthening the function of the media to optimize teacher and students communication and learning innovations that help students’ learning difficulties during the pandemic.
Abstract. Khotimah S, Suharjono, Ardyati T, Nurani Y. 2020. Isolation and identification of cellulolytic bacteria at fibric, hemic, and sapric peat in Teluk Bakung Peatland, Kubu Raya District, Indonesia. Biodiversitas 21: 2103-2112. Cellulose degrading bacteria was one of the microbial removers of organic matter contained in the soil into simpler monomers so that it can be utilized by other organisms. The objective of the research was to obtain cellulose-degrading bacteria found on fibric, hemic, and sapric peat in forest and shrubs (oil palm). The bacteria were isolated by pour plate method on 1% CMC media. Selected isolates were assayed quantitatively based on the activity of cellulase enzyme, identified with 16S rDNA. The density of cellulolytic bacteria in the secondary forest peat of fibric, hemic, sapric were 2.1x103 cfu/g, 5.9x104 cfu/g, and 4.9x104 cfu/g whereas, in the area of shrubs/oil palm peat fibric, hemic and sapric 6.9x104 cfu/g, 8.4x104 cfu/g and 3.4x105 cfu/g respectively. There were 19 bacterial isolates that have clear zones around the colony as degradation of cellulose had highest ability to degrade cellulose with clear zones of 5-7 mm. The strain of SB1.1.1 showed highest activity of cellulase enzyme 11.17 U/mL, followed by HH3.1.1 strain and SB2.3 7.83 U/mL. Based on the phylogeny tree, strain SB1.1.1 and HH3.1.1 have the closest kinship relationship with Bacillus cereus with a kinship relationship of 100%, while SB2.3 has the closest kinship relationship with Bacillus stratosphericus with a relationship of 99.85 %.
Kegiatan yang paling penting dilakukan oleh para perusahaan adalah untuk mendapatkan keuntungan. Di sini peran pemasok / supplier sangat berpengaruh bagi pertumbuhan dan kemajuan suatu perusahaan, khususnya pada Giant Supermarket Pondok Kopi. Salah satu produk yang ada pada supermarket ini adalah Telur yang bermerk. Telur bermerk disini dalam artian telur yang ada didalam kemasan (pack), pemasok telur bermerk sangat penting untuk dilakukan penelitian, karena banyaknya barang yang tidak terjual atau tidak banyak yang diminati oleh konsumen. Sehingga perlu adanya pemilihan supplier yang terbaik untuk telur bermerk ini. Pengelolahan data pada penelitian ini menggunakan metode Simple Additive Weighting (SAW). Selain itu,model yang telah dibuat akan diimplementasikan menajdi suatu Sistem Pendukung Keputusan (SPK). Kriteria yang dapat mempengaruhi pemilihan pemasok adalah ketepatan pengirim, kualitas barang, harga barang, dan fleksibiltas. Penelitanini akan diangkat suatu kasus yaitu mencari alternatif terbaik berdasarkan kriteriakriteria yang telah ditentukan. Guna mencari bobot untuk setiap atribut, kemudian dilakukan peroses perangkingan yang akan menentukan alternatif yang optimal yaitu supplier terbaik.
Kemampuan menyimak dan berbicara menjadi dasar belajar bahasa, dapat memperlancar komunikasi lisan dan menambah pengetahuan. Penelitian ini bertujuan mengetahui pengaruh storytelling berbantu media audio terhadap kemampuan menyimak dan berbicara anak usia dini. Penelitian ini menggunakan metode eksperimen dengan desain Quasi exsperimental Design. Sampel penelitian ini sejumlah 64 siswa. Analisa data menggunakan program SPSS dengan uji statistik cronbach alpha (α). Hasil penelitian menunjukkan (1) terdapat pengaruh signifikan penggunaan media storytelling berbantu audio terhadap kemampuan menyimak anak usia dini; (2) terdapat pengaruh signifikan penggunaan media storytelling berbantu audio terhadap peningkatan kemampuan menyimak anak usia dini; (3) penggunaan media storytelling berbantu audio lebih efektif meningkatkan kemampuan menyimak dan berbicara pada anak usia dini daripada penggunaan media konvensional. Berdasarkan permasalahan, dirumuskan pertanyaan bagaimana pengaruh pembelajaran storytelling berbantu media audio terhadap kemampuan menyimak dan berbicara anak usia dini. Dampak penelitian pembelajaran storytelling berbantu media audio, kemampuan menyimak dan bebicara dapat diaplikasikan dalam kegiatan sehari-hari
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