No abstract

This research aims to determine the effect of mixing cattle dung as a culture medium to the growing population of earthworms. The research was conducted for 42 days starting from 18 October to 28 November 2017 at the fish farming school hall of Agriculture Faculty of Islamic University Riau Pekanbaru. The worm tree used in this study was as many as 960 tail or 80 tail for each container. Worms are maintained for 42 days with different mixtures of medium, i,e, 100% P1 dung treatment, P2 cow-dung treatment 50% + 50% buffalo dung, 50% cow dung + 50% goat dung, 50% cow dung + 50% chicken droppings. The research design was Completely Randomized Design with 4 treatments and 3 replications. The result of this research showed that the increase of population of earthworm with the mixing of cattle dung as culture media which conducted for 42 days is the best treatment of P2 as much as 4266 head/container, then the second one used was in treatment 3 as much as 1855 head/container, and the lowest increase of the population was at treatment P1 as much as 403 head/container, and followed by treatment P4 as much as 575 head/ container.

The aim of this study was to investigate the effect of liquid organic fertilizer obtained from vegetable waste on Chlorella sp. The study was conducted for 20 days at the Microalgae and Fish Nutrition Laboratory, Faculty of Agriculture, Islamic University of Riau, Pekanbaru. The study design used a completely randomized design (CRD) with 4 treatments and 3 replications, consisting of P1 = spinach, P2 = cabbage, P3 = katuk vegetables (Sauropus androgynous) and P = mustard greens. Liquid organic fertilizer at a dose of 2 cc/l was used in each treatment. The results showed that the best abundance of Chlorella sp cells in the treatment using mustard greens was 11,183,333 cells/ml, and the peak was on day 14, while the lowest cell abundance using vegetable waste was 6,166,667 cells/ml. The highest amount of biomass was in P4 (mustard green waste) 0.41 g/L and the lowest was in P3 (mustard green waste) 0.16 g/L.

Matematika pada umumnya identik dengan penghitungan angka dan rumus, sehingga menimbulkan anggapan bahwa keterampilan komunikasi tidak dapat dibangun dari pembelajaran matematika. Salah satu komponen kunci yang dapat mempengaruhi keberhasilan dalam matematika adalah kebutuhan untuk memperhatikan ketelitian yang secara eksplisit meminta siswa untuk memperhatikan ketepatan baik kalkulasi maupun bahasa. Berdasarkan hasil wawancara dengan guru mata pelajaran matematika SMP di salah satu sekolah negeri yang ada di Makassar, peneliti menemukan beberapa masalah dalam pembelajaran matematika  (1) metode yang digunakan guru adalah ceramah. (2) pembelajaran belum berpusat pada siswa (student centered learning). (3) Dalam menyelesaikan soal matematika siswa kurang mampu menuliskan simbol matematika dengan benar. Bagaimana meningkatkan komunikasi matematika siswa dalam membangun diskusi kelompok yang efektif melalui strategi student team heroic leadership adalah tujuan penelitian ini. Jenis penelitian ini adalah Penelitian Tindakan Kelas yang akan di adakan minimal 2 siklus, setiap siklus terdiri dari empat tahapan yaitu: 1) Perencanaan, 2) Pelaksanaan, 3) Pengamatan, 4) Refleksi. Subjek Penelitian adalah siswa kelas VII salah satu SMP negeri yang ada di Makassar, yang terdiri dari 6 laki-lai dan 10 perempuan. Hasil penelitian menunjukkan komunikasi matematika siswa dapat ditingkatkan dengan menerapkan strategi pembelajaran Student Team Heroic Leadership, hal ini ditunjukkan dengan rata-rata nilai hasil tes komunikasi pada siklus I dari 76% menjadi 96% pada siklus II, ketuntasan hasil tes komunikasi matematika siswa secara kalsikal meningkat dari tes siklus I ke tes siklus II, dan terjadi perubahan positif aktivitas siswa pada siklus I dan siklus II. Temuan lain terungkap bahwa adanya kecenderungan siswa menyembunyikan sesuatu yang tidak diketahui selama proses pembelajaran sehingga guru kesulitan untuk menilai sejauh mana pemahaman siswa terhadap konsep dari materi matematika yang disajikan. Harapan peneliti, lebih lanjut akan dilakukan penelitian bagaimana memunculkan percaya diri siswa dalam mengungkapkan ketidaktahuan selama menyelesaikan masalah matematika yang disajikan guru selama proes pembelajaran.

Sasak language is rich of language varieties, both in dialect (pronunciation) and vocabulary. It is a unique language which shows some influences from Java, Bali and Makasar as the neigbouring Islands. The research is aimed at revealing the language variations made by the “sasak” speaker (an Austronesian language family) when they speak “sasaknese”. The research is qualitatively describe how the speakers of sasak stand the existence of their language by renewing, updating it through language variations to gain belonging sense among teens who were gradually used modern languages.  For the sake of finding out accurate and valid data on sasaknese language variations used, some related literatures on relevant issues were deeply read and reviewed to provide the supporting data sources. The research data were collected and analyzed in qualitative ways. The model of data analysis were divided into three stages of data analysis, those stages are data reduction where the researcher selects and simplifies the big data into a more simple and readable one. And then display the data where the researcher fits the selected data into tables, matrixes or charts to support reader  data display. The last stage is conclusion drawing and verification where the researcher made some verifications data to draw a final conclusion of the research. After all, the reports the language variations exist in sasak language, a language that is spoken by native community who live in Lombok. This local language is now endangered for the ignorances.