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All Journal Jurnal Hukum Novelty Jurnal Ilmu Pendidikan Indonesia Jurnal Pengabdian Sosial
Samosir, Rendra Christian
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Religion Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Mathematics Physics Public Health Social Sciences

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DEVELOPMENT OF A GUIDED INQUIRY-BASED CHEMISTRY MODULE ON PERIODIC SYSTEM OF ELEMENTS MATERIAL Siregar, Tiurlina; Marthen Inggamer, Mamberuman; Samosir, Rendra Christian
Jurnal Ilmu Pendidikan Indonesia Vol 12 No 2 (2024): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Master of Science Education Program, Postgraduate Program of Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v12i2.3921

Abstract

The availability of modules as teaching materials is very limited so it is an obstacle in learning chemistry, especially material on the periodic system of elements. Therefore, this research aims to develop and validate the feasibility of a chemistry module on material on the periodic system of elements based on guided inquiry and to analyze how students and teachers respond to the product being developed. The research and development (R&D) method is the method used and ADDIE is the development model applied as a methodology. The module developed is very suitable for application in chemistry learning, according to the results of the analyzed data. The average assessment from validators is 95% very decent and the response from colleagues is 98% very good, the student response is 97% very good
DEVELOPMENT OF GUIDED INQUIRY-BASED E-MODULE ON COLLIGATIVE PROPERTIES OF SOLUTIONS TO IMPROVE SCIENCE LITERACY ABILITY AND CHEMISTRY LEARNING OUTCOMES Winarni, Endang; Samosir, Hotlan; Samosir, Rendra Christian
Jurnal Ilmu Pendidikan Indonesia Vol 12 No 3 (2024): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Master of Science Education Program, Postgraduate Program of Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v12i3.4009

Abstract

Abstract: This study aims to the feasibility of guided inquiry-based Chemistry e-modules on the material of colligative properties of solutions, improve science literacy skills and learning outcomes of students. The research sample was the population of class XII MIPA3 SMA Negeri 1 Bintuni with a total of 33 students. Data collection using purposive sampling technique, Research instruments are material feasibility validation sheet and media feasibility, teacher response sheet, student response sheet, The results showed: 1) The feasibility of chemistry e-modules from material expert validators and media experts is 97% very feasible category, 88% teacher response is very good category, and 91% student response is very good category. 2) Students' science literacy skills average n-Gain test 0.46 medium category. 3) Increased learning outcomes of students on average n-Gain test 0.56 medium category. Keywords: Quided Inquisiry; Chemistry E-Module; Colligative Properties Of Solutions Abstrak: Penelitian ini bertujuan untuk kelayakan e-modul Kimia berbasis guided inquiry pada materi sifat koligatif larutan, meningkatkan kemampuan literasi sains dan hasil belajar peserta didik. Sampel penelitian adalah populasi kelas XII MIPA3 SMA Negeri 1 Bintuni dengan jumlah 33 peserta didik. Pengumpulan data menggunakan teknik purposive sampling, Instrumen penelitian yaitu lembar validasi kelayakan materi dan kelayakan media, lembar respon guru , lembar respon peserta didik, Hasil penelitian menunjukkan: 1) Kelayakan e-modul kimia dari validator ahli materi dan ahli media sebasar 97% kategori sangat layak, respon guru 88 % kategori sangat baik, dan respon peserta didik 91% kategori sangat baik. 2) Kemampuan literasi sains peserta didik rata-rata uji n-Gain 0,46 kategori sedang. 3) Peningkatan hasil belajar peserta didik ratarata uji n-Gain 0,56 kategori sedang. Kata Kunci: Quided Inkuiry; E-Modul Kimia; Sifat Koligatif Larutan
Penyuluhan Hukum Pentingnya Kepemilikan Sertifikat Hak MilikUntuk Menjamin Kepastian Hukum Di Kelurahan Hedam Distrik Heram Kota Jayapura Palenewen, James Yoseph; Reumy, Ludia Jemima I.R.; Hamonangan, Sobardo; Samosir, Hotlan; Bauw, Lily; M. Polontoh, Herry; Reba, Yusak; Pelupessy, Eddy; Rongalaha, Johan; Solossa, Marthinus; Reumi, Frans; Pondayar, Yustus; Tanati, Daniel; Samosir, Rendra Christian
Jurnal Pengabdian Sosial Vol. 2 No. 6 (2025): April
Publisher : PT. Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/7kn95061

Abstract

Pengabdian ini dilakukan dengan judul Penyuluhan Hukum Pentingnya Kepemilikan Sertifikat Hak Milik Untuk Menjamin Kepastian Hukum Di Kelurahan Hedam Distrik Heram Kota Jayapura, kegiatan yang dilakukan kepada mitra dikarenakan adanya kasus dari mitra tentang ketidakpahaman mengenai prosedur pembuatan sertifikat hak milik atas tanah sehingga dengan keahlian yang dimiliki pengabdi dapat melakukan penyuluhan hukum tersebut guna agar mitra dapat mengetahui status kepemilikan tanah mereka dan cara pengurusan sertifikat hak milik atas tanah pada Kantor Pertanahan Kota Jayapura untuk menjamin kepastian hukum. Metode pelaksanaan pengabdian ini dilakukan dengan cara melalui ceramah dan diskusi yang dilaksanakan pada hari sabtu, tanggal 22 februari 2025 yang dilaksanakan di Kelurahan Hedam. Kegiatan ini di awali dengan persiapan dan koordinasi, kemudian pemaparan materi dengan memberikan pengetahuan kepada mitra mengenai prosedur pengurusan sertifikat hak milik atas tanah. Adapun luaran dari pengabdian ini adalah memberikan pemahaman kepada mitra tentang status kepemilikan hak-hak atas tanah, pendaftaran tanah, prosedur pengurusan sertifikat hak milik atas tanah dan juga memberikan pendampingan hukum pra ajudikasi dalam proses pengurusan sertifikat pada Kantor Pertanahan Kota Jayapura.
E-MODULE OF CONTEXTUAL BASED CHEMISTRY IN INCREASING LEARNING ACTIVITY ON HYDROCARBON COMPOUND MATERIAL Siregar, Tiurlina; Semuel Franklyn Yawan; Samosir, Rendra Christian
Jurnal Ilmu Pendidikan Indonesia Vol 13 No 1 (2025): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Master of Science Education Program, Postgraduate Program of Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v13i1.4571

Abstract

Abstract: This study aims to find out how to make contextually based chemistry e-modules, developcontextually based chemistry e-modules, feasibility of contextually based chemistry e-modules, increaselearning activity, increase learning interest and learning outcomes of class XI IPA students using e-modulescontextual based chemistry on the material of hydrocarbon compounds. The research method used isResearch and Development (R&D). The research was conducted in class XI IPA of SMA Negeri Samberwith a total of 22 students. The results of the study show that: Assessment of student learning activeness inlesson plan 1 to lesson plan 3 obtains a percentage of 82% in the active category.Keywords: Chemistry E-module, Contextual, Active learning, Hydrocarbon Compounds.
People's mining governance and ecological impacts in Jayapura City (1998-2024) Samosir , Hotlan; Siregar , Tiurlina; Reba , Yansen Alberth; Muttaqin , M. Zaenul; Hussain, Fakhar; Samosir, Rendra Christian
Jurnal Hukum Novelty Vol. 16 No. 2 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jhn.v16i2.30371

Abstract

Introduction to the Problem: The case of artisanal mining in Jayapura City has had positive socioeconomic impacts through job creation. However, it has also raised concerns about ecological impacts, including landscape degradation and contamination of the watershed that drains into Lake Sentani. Purpose/Study Objectives: This study aims to analyze the dynamics of community mining governance in Jayapura City since 1998, with a focus on the role of local government in law enforcement and the ecological impacts of small-scale gold mining activities. Design/Methodology/Approach: A socio-legal research approach was adopted, grounded in an empirical-juridical paradigm to capture both the statutory framework and its practical implementation. Data for the study were compiled through an analysis of regulatory documents, academic literature, and environmental impact reports, augmented by systematic field observations at key mining sites around Jayapura (including buffer zones near the Cyclops Nature Reserve and the Lake Sentani watershed). Observations were conducted over five months, utilizing document research protocols and peer review verification to ensure data reliability and analytical rigor. Findings: The findings reveal regulatory gaps and weak law enforcement, resulting in rampant illegal mining and environmental degradation, including land degradation, alterations to the hydrological system, and pollution of the watershed, ultimately affecting Lake Sentani. Although formalization of community mining businesses was attempted after 2007, challenges such as weak coordination between agencies, limited oversight, and conflicts of interest complicate the implementation of sustainable regulations. This study recommends strengthening the assessment of community mining areas, developing transparent local regulations, improving oversight and law enforcement mechanisms, and involving communities in environmental monitoring and advocacy to achieve a balance between regional economic and environmental sustainability. Paper Type: Research Article
Co-Authors Daniel Tanati Eddy - Pelupessy Frans Reumi, Frans Hotlan Samosir Hussain, Fakhar James Yoseph Palenewen Lily Bauw M. Polontoh, Herry Marthen Inggamer, Mamberuman Muttaqin , M. Zaenul pondayar, yustus Reba , Yansen Alberth Reumy, Ludia Jemima I.R. Rongalaha, Johan Samosir , Hotlan Semuel Franklyn Yawan Siregar , Tiurlina Sobardo Hamonangan Solossa, Marthinus Tiurlina Siregar Winarni, Endang Yusak Elisa Reba