Tree species richness in disturbed and undisturbed site of Ketambe Research Station Ketambe, Southeast Aceh regency, Indonesia has been studied from March to May 2018. Research sites were determined using purpossive sampling method. Tree samples were recorded within a plot measuring 400 m2 for each sites with a total of 40 plots. Ecological parameters measured in this study were: Density (D), Relative density (RD), Frequency (F), Relative frequency (RF), Dominance (Do), Relative dominance (RDo), Importance Value Index (IVI), Shannon’s diversity index (H’), Margalefs index (R1), and Evenness (E). Estimation of biomass (B) carbon stock (CS) was conducted using allometric equation. Physico-chemical characteristics measured were: air temperature (°C), soil acidity (pH), light intensity (lx), air humidity (%), total organic N (%), and phosphate quantity (ppm) as secondary data. Our study found 79 tree species belonging to 30 families, 61 species in undisturbed site and 47 species in disturbed site. An important species with the highest Importance Value Index (IVI) was Dysoxylum sp.3 in undisturbed site and Macaranga tanarius in disturbed site. The biodiversity was more diverse in undisturbed site (H’ = 3.70; R1 = 10.93) than disturbed site on the whole study area (H’ = 3.47; R1 = 9.10). The values of evenness (E) varied between 0.66–0.68 among sites. Estimation of tree biomass and carbon stock followed the similar trend with a total of B = 971.299 Mg/ha and CS = 485.649 Mg/ha on the whole study area. The present study revealed that some vital tree species exist in forest area of Ketambe Research Station as carbon sinks along with their high biodiversities from both disturbed and undisturbed regions. The information on tree species diversity may provide a baseline information for conservation of the biodiversity in this area.

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The implementation was carried out at the Faculty of Teacher Training and Education, University Gunung Leuser Kutacane for the 2021/2022 academic year starting from November 30-3 December 2021, which was attended by 9 students in the seventh semester of the biology education study program. Each student will practice micro-teaching by delivering materials and models that have been determined by each participant. Participants who progress will be assessed by looking at the eight basic teaching skills that have been prepared by the presenters so that the results of the questionnaire given will be evaluated to see how far the micro-teaching participants are able to master the eight basic teaching skills. The results of the average level of achievement of the overall percentage of 64,77% with a score of more than half of the criteria. This means that more than half of the participants in the micro-teaching practice are able to perform the eight basic teaching skills so it is hoped that in the future they will become professional and competent teachers. Abstrak Informasi merupakan kebutuhan yang sangat penting, dasar dalam pengambilan keputusan salah satunya adalah bersumber dari informasi tersebut. Kantor Kelurahan, kantor desa ataupun kantor pemerintahan lain syarat akan informasi yang dibutuhkan oleh masyarakat umum. Kehadiran papan pengumuman sebagai media penyampai informasi di Kantor Kelurahan, kantor desa ataupun kantor pemerintahan lain hingga saat ini tetap menjadi hal penting yang dapat digunakan untuk memenuhi kebutuhan masyarakat akan informasi. Papan Informasi digital (Digital Signage) merupakan salah satu media elektronik yang saat ini sering digunakan untuk memberikan informasi yang dibutuhkan. Papan pengumuman digital (digital signage) adalah Sebuah layanan informasi berbasis digital satu arah. Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah membangun papan informasi digital dengan menggunakan menggunakan perangkat android tv. Hadirnya Papan informasi digital berbasis Android TV ini memberikan kemudahan bagi perangkat desa dalam membuat informasi berbasis digital dikarenakan kemudahan penggunaannya yang sama dengan perangkat handphone berbasis android.

This study aims to determine students' responses to the PAIKEM approach to food biotechnology material. The population in this study was all grade IX students of Bambel 3 Public Junior High School, Aceh Tenggaran Regency, for the 2021/2022 academic year, totalling 69 students. The sample taken in this study was one class from class IX-C with a total of 20 students. In class IX-C, qualitative research methods were carried out using a descriptive design and purposive sampling technique. The results of students' responses regarding the PAIKEM approach of class IX students on food biotechnology material at Bambel 3 Public Junior High School were 0.80. According to the inter-achievement guidelines, the interval coefficient at a score of 0.80-1.00 was very high.

This study aims to determine students' responses to the PAIKEM approach to food biotechnology material. The population in this study was all grade IX students of Bambel 3 Public Junior High School, Aceh Tenggaran Regency, for the 2021/2022 academic year, totalling 69 students. The sample taken in this study was one class from class IX-C with a total of 20 students. In class IX-C, qualitative research methods were carried out using a descriptive design and purposive sampling technique. The results of students' responses regarding the PAIKEM approach of class IX students on food biotechnology material at Bambel 3 Public Junior High School were 0.80. According to the inter-achievement guidelines, the interval coefficient at a score of 0.80-1.00 was very high.