ABTRACTStudents in elementary schools enter a concrete operational stage, so that they need a media to be able to grasp various existing concepts. One of the subjects that seems abstract is mathematics. Mathematics learning requires concrete objects and explanations. The existence of this corona virus outbreak makes learning must be completely online, math is no exception. The purpose of this study is to describe the process of learning mathematics during the corona virus pandemic takes place and explain the impact of being online during the corona virus. This research method is a qualitative method using interviews and literature study. The results of this study are the process of learning mathematics conducted online in various schools and some are still requiring parents to take their children's assignments to school. Various impacts are felt during online learning in the midst of this pandemic, there are positive and negative ones.Keywords: corona virus, the impact of mathematics learning, the process of learning mathematics. ABSTRAKPeserta didik di sekolah dasar memasuki tahap operasional konkrit, sehingga memerlukan suatu media untuk dapat menangkap berbagai konsep yang ada. Salah satu mata pelajaran yang terkesan abstrak adalah matematika. Pembelajaran matematika memerlukan benda konkrit dan penjelasan dari guru. Adanya wabah virus corona ini menjadikan pembelajaran harus serba online, tidak terkecuali matematika. Tujuan dari penelitian ini adalah mendeskripsikan proses belajar matematika selama pandemi virus corona ini berlangsung dan memaparkan dampak dari adanya daring selama pandemi virus corona. Metode penelitian ini adalah metode kualitatif dengan menggunakan wawancara dan studi pustaka. Hasil dari penelitian ini adalah proses pembelajaran matematika dilakukan secara daring di berbagai sekolah dan ada pula yang masih mengharuskan untuk orang tuanya mengambil tugas anaknya ke sekolah. Berbagai dampak dirasakan oleh guru, peserta didik, maupun orang tua selama pembelajaran daring di tengah pandemi ini, ada yang positif maupun yang negatif.Keywords: dampak pembelajaran matematika, proses pembelajaran matematika, virus corona.
This study aims to identify and describe the teacher's role as an applicator of the Pancasila student profile in the Independent Learning Curriculum. This research uses a qualitative approach with a literature study design. The results of this study conclude that in realizing the Pancasila student profile in the curriculum which is a plan and arrangement that contains goals, content, materials and teaching methods must be highlighted can have a good impact on the implementation of Pancasila values focused on the teacher's role in the formation and personality of students carried out to support the profile of Pancasila students in the Independent Learning Curriculum in the following ways: First, provide advice which is a form of coaching to students so that they do not make mistakes. Second, the attitude of tolerance which is one of the characteristics of the nation's character that every human being must have. Third, strengthening discipline which plays a very important role to be implemented in the school environment in order to shape the character of students who are disciplined. Fourth, love for the homeland where there are many agendas carried out both in the school environment and in the community that will have a positive impact on the progress of the nation.
Mangrove merupakan ekosistem yang khas dan memiliki fungsi penting secara ekologi, sosial-ekonomi, dan pendidikan. Luas kawasan mangrove di Kabupaten Purworejo semakin berkurang akibat adanya penebangan, permukiman, tambak,dan pertanian. Berkurangnya tegakan mangrove akan mempengaruhi keberadaan berbagai fauna yang berasosiasi dengannya. Oleh karena itu dilakukan pada bulan Agustus-September 2016 untuk mengetahui keanekaragaman kepiting biola di kawasan mangrove Kabupaten Purworejo, Jawa Tengah. Ada tiga stasiun, yaitu mangrove lebat (Desa Gedangan), mangrove sedang (Desa Jatikontal), dan mangrove jarang (Desa Ngentak). Dari penelitian didapatkan 7 jenis kepiting biola, yaitu Uca annulipes, U.crassipes, U.paradussumieri, U.rosea, U.tetragonon, U.vocans, dan U.vomeris. Indeks keanekaragaman kepiting biola di kawasan mangrove Kabupaten Purworejo, Jawa Tengah pada stasiun 1 (1,67)dan stasiun 2 (1,90) tergolong sedang. Adapun indeks keanekaragaman kepiting biola di stasiun 3 (0,64) tergolong rendah. Kondisi lingkungan di seluruh stasiun relatif baik untuk kehidupan mangrove dan kepiting biola, yaitu suhu26-30°C, pH 6-8, oksigen terlarut 3,5-6,6 mg/L, salinitas 3-9 ppt, dan substrat lumpur berpasir. Vegetasi mangrove pada stasiun I adalah Rhizophora mucronata, Nypa fruticans, Sonneratia alba, dan Hibiscus tiliaceus. Vegetasi mangrovepada stasiun II adalah Sonneratia caseolaris, Rhizophora stylosa, N.fruticans, H.tiliaceus, dan Morinda citrifolia.Vegetasi mangrove pada stasiun III adalah S.alba, S.caseolaris, N.fruticans, dan R.mucronata. Kerapatan vegetasi mangroveberkaitan dengan kelimpahan jenis (kepadatan) kepiting biola.
Plant specimens were collected by using survey method, than it was identified and preserved as herbaria. The result indicated that there was 55 species (27 families) of mangrove plants in Central Java, composed by major (17), minor (12), and association (26) plants, with habits i.e. trees (32), bushes (13), and herbs (10). The species of major mangrove plant with the broadest range of site distribution were R. mucronata (16), followed by S. alba (15), N. fruticans (12), A. alba and A. marina (each was 11). The species of minor mangrove plant with the broadest range of site distribution was A. aureum (11). The associative plant of mangrove with the broadest range of site distribution was A. ilicifolius (16), D. trifoliata (15), C. gigantea (13), H. tiliaceus (11), T. catappa (11), and I. pes-caprae (10). The other species were distributed in less than 10 sites. The location with the most varied species diversity was Wulan (35), the next was Motean and Muara Dua (each was 29
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