Abstract. Hidayah N, Lubis R, Wiryawan KG, Suharti S. 2019. Phenotypic identification, nutrients content, bioactive compounds of two jengkol (Archidendron jiringa) varieties from Bengkulu, Indonesia and their potentials as ruminant feed. Biodiversitas 20: 1671-1680. Agricultural waste is abundant in tropical countries. Many farmers in these countries have been using this waste as the main sources for feeding livestock. Ones of them are jengkol (Archidendron jiringa) by-product like peels and leaves have not been utilized optimally. The aims of this study were to explore the peel and leaves of two varieties of jengkol, i.e., jengkol gajah and jengkol padi, from Bengkulu Province and to assess their potentials as ruminant feed. Variables observed were phenotypic identification, nutrients content, and bioactive compounds. Phenotypic identification was completed using non-experimental examination through survey and observation methods to identify the phenotypic characters of jengkol in four districts in Bengkulu. The peel of jengkol padi had a blackish purple color and was thicker than that of jengkol gajah. The leaves of jengkol gajah was longer (10.2-15.5 cm), but jengkol padi had wider leaves (6-7.5 cm). The proportion of weight of jengkol peel (59.99%) is higher than seed (40.01%). Jengkol peel had high fiber content (33.07-35.28%) while the leaves were rich in protein and total digestible nutrient (TDN) (15.17-19.26% and 63.87-65.82%). In nutrient content comparison, the peel of jengkol padi was better (crude protein (CP:8.41%, ether extract (EE):0.79%, crude fiber (CF): 35.28% and total digestible nutrient (TDN): 52.81% but jengkol gajah had better nutrient in its leaves (CP:19.26%, EE:2.50%, CF:26.66% and TDN:51.56%).The saponin content (26.52%), total phenol (2.99%), and tannin (1.22%) in the peel were higher than those in the leaves, while the leaves had higher flavonoids content (2.0%) than the peels. Bioactive compounds in jengkol gajah were higher than those in jengkol padi. Based on this study, both jengkol gajah and jengkol padi are potential as ruminant feed in which the peel can be a source of fiber and saponins, while the leaves are potentially used as a source of protein, fiber and saponins.

This study aims to determine the effect of think pair share learning models using mind mapping media on the activities and cognitive learning outcomes of class X science students of SMAN 06 Bengkulu City. This type of research is a quasi-experimental design with Non-Randomized Design. Samples were taken from 2 classes of 4 classes by looking at the mean scores of students who are almost the same, namely class X Natural Sciences A as the experimental class and Natural Sciences B as a control class. The instrument used was in the form of student activity observation sheets and cognitive test questions. Based on scoring the results of the observation sheet of the experimental class student activity was higher than the control class that was 58.56 and the average posttest result was 85.69 while the observation sheet of the activity class of the control class was 53.97 and the average posttest result was 63.03. Student activity variable t-test results obtained Sig value of 0,000 <0.05 t-test results of student cognitive learning results obtained p-value of 0,000 <0.05, which means there are differences in activity scores and cognitive outcomes of students before and after the intervention of the learning model think pair share using media mind mapping. In conclusion, Think Pair Share learning model with Mind Mapping media has an influence on students' cognitive learning activities and outcomes. Keywords: activities, learning outcomes, mind mapping, think pair share

Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar siswa pada mata pelajaran Biologi dengan menggunakan model pembelajaran tipe STAD (Student Team Achievement Division) dan model pembelajaran tipe GI (Group Investigation). Jenis penelitian ini adalah true experiment. Populasi dalam penelitian adalah seluruh siswa XI IPA yang berjumlah 133 orang, yang terbagi dalam tiga kelas, 2 kelas eksperimen dan satu kelas kontrol. Desain penelitian yang digunakan adalah Pretest Posttest Control Group Design. Pengumpulan data dilakukan dengan menggunakan tes. Data analisis menggunakan uji One Way Anova. Hasil penelitian menunjukkan bahwa terdapat perbedaan hasil belajar siswa dengan menggunakan model pembelajaran tipe STAD (Student Team Achievement Division) dan model pembelajaran tipe GI (Group Investigation). Hasil belajar siswa dengan menggunakan model pembelajaran GI (Group Investigation) lebih menarik dan lebih baik dibandingkan dengan model pembelajaran tipe STAD (Student Team Achievement Division) dan Kontrol.Keywords: Hasil Belajar, Pembelajaran tipe STAD, Pembelajaran tipe GI

Teaching materials are an important part of the learning process, one of which is the Student Worksheet (LKS). An educator needs to increase creativity in preparing teaching materials to be delivered. Teaching materials used by students need to follow the development of science and technology. A digital mind map is a mind map that is packaged in digital form that displays brief lesson notes in the form of a mind map with the help of the mindomo application. This needs analysis was carried out to find out the needs needed in the Student Worksheet (LKS), and responses regarding the development of LKS with the help of digital mind maps. This type of research method is descriptive qualitative research. Research data was obtained by observation, interviews, and distributing questionnaires. The results obtained from this analysis are the responses of teachers and students to the development of worksheets with the help of digital mind maps are quite good. The worksheets used by educators are monotonous but understandable, there is no digital mind maps task to increase student creativity. Students also agree that there is an interesting, easy-to-understand LKS development by using their Android smartphones. Therefore, the data from this needs analysis becomes a preliminary study on the development of LKS with the help of digital mind maps, then it is developed into an LKS with the help of digital mind maps that will be used.Kata Kunci: Analisis Kebutuhan, Lembar Kerja Siswa (LKS), Digital Mind Maps

Capung memiliki fungsi yang sangat penting bagi lingkungan, sebab dapat menjaga keseimbangan ekosistem, dengan begitu keanekaragaman jenis capung dapat dijadikan sebagai bioindikator kesehatan suatu kawasan. Penelitian ini bertujuan untuk mengetahui keanekaragaman dan distribusi capung di kawasan padang rumput di Desa Bingin Rupit Ulu Kecamatan Rupit. Penelitian ini mengunakan metode survei langsung ke lokasi penelitian dengan metode jelajah. Luas lokasi penelitian ±1 ha. Berdasarkan hasil penelitian ditemukan 12 spesies capung yang termasuk ke dalam 5 famili, yang terdiri dari 2 subordo yaitu subordo Anisoptera ditemukan 2 Famili yaitu: Gomphidae 1 spesies yaitu Ictinogomphus decoratus, famili Libellulidae 7 spesies yaitu Lathrecista asiatica, Rhodothemis rufa, Diplacodes trivialis, Crocothemis servilia, Orthetrum sabina, Neurothemis ramburii, Orthetrum glaucum, sedangkan subordo Zygoptera terdapat 3 famili yaitu : famili Coenagrionidae 2 spesies yaitu Agriocnemis femina, Ceriagrion praetermissum, famili Protoneuridae 1 spesies yaitu Prodasineura autumnalis, family Platycnemididae 1 spesies yaitu Copera marginipes. Indeks keanekaragaman jenis capung didapat nilai 0,884 dan termasuk kategori rendah (H’ > 1). Distribusi capung di kawasan padang rumput termasuk mengelompok (11 spesies) dan pola penyebaran seragam (1 spesies).