A research has been conducted to develop a physic learning media in form of android-based pocket book. We designed Harmonic Oscillation pocket book and test its feasibility and effectiveness in improving cognitive learning outcomes of students. This study using research and development method adapted from ADDIE model. The results revealed that this software has been successfully developed and is very feasible to be used as a physics learning media. This Android-based Harmonic Oscillation pocket book is effective in enhancing students cognitive learning outcomes and students showed positive tendency response toward the software.
Abstract:The use of starch as the main ingredient in making plastic has great potential especially in Indonesia with various starch-producing plants. To obtain bioplastics, starch is added with glycerol plasticizer, so that the plastic is more flexible and elastic. In this study, cassava starch (Manihot esculenta cranz) was used and the volume of glycerol as plasticizer was varied by 2 ml, 3 ml and 4 ml. The aim to be achieved in this study was to determine the volume variation of glycerol against the tensile strength of environmentally friendly biodegradable plastic films made from cassava starch. In addition, to find out what is the density of environmentally friendly biodegradable plastic films made from cassava starch. Cassava starch was obtained by isolating cassava starch 15 grams and then mixed with 2 ml glycerol (varied 3 ml and 4 ml) and 50 ml of aquades then heated while stirring with magnetic stirrer to form a thick dough. The mixture is then printed on a stainless steel mold. The results obtained in the form of thin sheets of plastic film that has been tested for tensile strength and density. After that followed by morphological analysis. The results of the biodegradable plastic characterization for tensile strength of plastic films with volume variations of glycerol 2 ml, 3 ml and 4 ml respectively as follows: 0.001 Mpa 0.069 Mpa 0.005 Mpa. For the density of biodegradable plastics for variations in volume of glycerol 2 ml, 3 ml and 4 ml respectively 0.0009 g / mm3, 0.0015 g / mm3 and 0.0014 g / mm3.Abstrak:Penggunaan pati sebagai bahan utama pembuatan plastik memiliki potensi yang besar terlebih lagi di Indonesia terdapat berbagai tanaman penghasil pati. Untuk memperoleh bioplastik, pati ditambahkan dengan plastisizer gliserol, sehingga diperoleh plastik yang lebih fleksible dan elastis. Pada penelitian ini digunakan pati ubi kayu (Manihot esculenta cranz) dan volume gliserol sebagai plastisizer divariasikan sebanyak 2 ml, 3 ml dan 4 ml. Tujuan yang ingin dicapai dalam penelitian ini adalah untuk mengetahui variasi volume Gliserol terhadap kuat tarik film plastik biodegradable ramah lingkungan berbahan dasar pati ubi kayu. Selain itu untuk mengetahui berapa densitas film plastik biodegradable ramah lingkungan berbahan dasar pati ubi kayu. Pati ubi kayu diperoleh dengan mengisolasi pati ubi kayu 15 gram kemudian dicampurkan dengan 2 ml gliserol (divariasikan 3 ml dan 4 ml) dan 50 ml aquades kemudian dipanaskan sambil diaduk dengan magnetik stirerr hingga berbentuk adonan yang kental. Campuran tersebut kemudian dicetak pada cetakan stainless steel. Hasil yang diperoleh berupa lembaran tipis film plastik yang telah diuji kekuatan tarik dan densitasnya. Setelah itu dilanjutkan dengan analisa morfologi. Hasil karakterisasi plastik biodegradable untuk kuat tarik film plastik dengan variasi volume gliserol 2 ml, 3 ml dan 4 ml berturut-turut sebagai berikut: 0.001 Mpa 0,069 Mpa 0.005 Mpa. Untuk densitas dari plastik biodegradable untuk variasi volume gliserol 2 ml, 3 ml dan 4 ml berturut-turut adalah 0.0009 g/mm3, 0.0015 g/mm3 dan 0.0014 g/mm3.
Salah satu faktor yang menghambat guru dalam mengusulkan kenaikan pangkat adalah publikasi karya ilmiah. Hal yang sama terjadi pada guru-guru di Kabupaten Sumba Timur. Terkait dengan permasalahan tersebut, maka kegiatan pengabdian masyarakat ini sangat penting dilakukan untuk membantu para guru dalam melakukan Penelitian Tindakan Kelas (PTK) dan publikasi hasil penelitian PTK. Kegiatan ini dilakukan dengan tahapan sosialisasi dan pendampingan dalam penyusunan proposal, laporan PTK dan artikel. Hasil kegiatan menunjukkan bahwa guru-guru telah memahami PTK namun sebagian besar belum mampu untuk menghasilkan proposal PTK. Hanya 3 dari 29 peserta yang sudah mampu mebuat artikel ilmiah hasil PTK. Oleh jarena itu kegiatan ini perlu terus dilakukan untuk membantu para guru agar mereka dapat mengusulkan kenaikan pangkat dan lebih dari itu mereka memiliki kepekaan dalam membaca permasalahan dalam kelas serta mampu melakukan tindakan untuk mengatasi permasalahan yang terjadi.
Penelitian Penelitian Tindakan Kelas (classroom action research). Bertujuan meningkatkan minat dan prestasi belajar siswa SMP Negeri Kabupaten Kupang.Penelitian ini dilaksanakan dalam dua siklus.Penelitian ini dilaksanakan selama proses pembelajaran fisika dengan materi Karakteristik zat.Subyek penelitian ini adalah siswa kelas VII A SMP Negeri 1 Kupang Tengah dengan jumlah siswa 30 orang. Data prestasi belajar siswa diambil dari nilai tes belajar siswa setiap akhir siklus yang diambil selama proses pembelajaran berlangsung. Dari hasil penelitian prestasi belajar siswa pada siklus I diperoleh persentase ketuntasan belajar untuk indikator I sebesar 96,67% sudah mencapai ketuntasan belajar secara klasikal, untuk indikator II sebesar 90% sudah mencapai ketuntasan belajar secara klasikal, untuk indikator III sebesar 86,67% sudah mencapai ketuntasan belajar secara klasikal, dan untuk indikator IV sebesar 60% belum mencapai ketuntasan belajar secara klasikal. Pada siklus II untuk indikator IV sebesar 93,33% sudah mencapai ketuntasan belajar secara klasikal.
This research is motivated by changes in the learning process due to the Covid-19 pandemic where the learning process during the Covid-19 pandemic uses online learning and post-covid-19 learning again uses the face-to-face (offline) learning process, where these two learning processes affect student learning motivation. The purpose of this study is to find out the picture of learning motivation during online learning, offline learning and comparing student learning motivation during online learning and offline learning. This research was conducted on students of Citra Bangsa Kupang Junior High School using a causal-comparative type of research. This research is an ex post facto type of research, which is research on data collected after a fact or event occurs. The population in this study were students of class VIII of SMP Citra Bangsa Kupang. The data sources used in this study are pimer data and secondary data, with data collection techniques using learning motivation questionnaire sheets. After getting all the data, the next step is to draw conclusions from this study by analyzing the data. The technique used to analyze this research is descriptive quantitative. The results of the research obtained are that student learning motivation during online learning during the Covid-19 pandemic is in the moderate category with an average score of 64. Student learning motivation during offline learning after the COVID-19 pandemic is in the high category with an average score of 82.4. There are differences in student learning motivation in participating in the online and offline learning process where student learning motivation during offline learning is higher than student learning motivation during online learning.
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