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All Journal Journal of Tropical Soils Jurnal Zarah Alotrop Jurnal Pendidikan dan Ilmu Kimia Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Mammiri: Jurnal Pengabdian Masyarakat IJIS Edu : Indonesian Journal of Integrated Science Education
Rina Elvia, Rina
University of Bengkulu
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Social Sciences Other

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PENINGKATAN HASIL BELAJAR KIMIA MAHASISWA MENGGUNAKAN MODEL INKUIRI TERBIMBING BERBASIS KONTEKSTUAL Nurhamidah, Nurhamidah; Elvia, Rina; Amida, Nadia; Yanti, Della Novri
Jurnal Zarah Vol 9 No 2 (2021): Jurnal Zarah
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v9i2.2916

Abstract

Pembelajaran kimia seringkali dianggap susah oleh sebagian mahasiswa, karena materinya banyak bersifat abstrak, hitungan dan konsep-konsep yang harus dipahami dengan baik. Untuk menunjang proses pembelajaran supaya menarik dan mudah dipahami dibutuhkan model pembelajaran yang tepat sehingga materi tersampaikan dengan baik. Tujuan dari Penelitian ini untuk melihat hasil belajar setelah menerapkan Model Pembelajaran Inkuiri Terbimbing Berbasis Kontekstual pada materi Stoikiometri. Penelitian ini dilakukan kepada mahasiswa baru Program Studi Pendidikan Biologi Fakultas Keguruan dan Ilmu Pendidikan Universitas Bengkulu, semester I angkatan 2020/2021. Hasil belajar dilihat melalui tes kognitif berupa posttest pada setiap akhir siklus. Berdasarkan hasil analisis data postes setiap siklus, menunjukkan terjadi peningkatan hasil belajar dimana nilai rata-rata, dan ketuntasan belajar klasikal siklus I adalah 51.92 dan 2.86 %, siklus II menjadi 72,5 dan 48.57 % dan siklus III naik menjadi 84.85 dan 94.29 %. Hasil ini menunjukkan pada siklus III pembelajaran sudah tuntas, dimana nilai rata-rata yang diperoleh telah ≥ 75 dan ketuntasan belajar klasikal sudah diatas 80 % yaitu 94.29 %.
PENGEMBANGAN SUPLEMEN BAHAN AJAR CARA-CARA ISOLASI DAN IDENTIFIKASI SENYAWA BAHAN ALAM DENGAN PENDEKATAN STEM’S BERBASIS ANDORID Krisandini, Triana; Sundaryono, Agus; Elvia, Rina
ALOTROP Vol. 8 No. 1 (2024): Penelitian Kimia dan Pembelajaran Kimia
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v8i1.34531

Abstract

Penelitian ini bertujuan untuk mengetahui tingkat kelayakan, respon mahasiswa terhadap suplemen bahan ajar bahan ajar Kimia Organik Bahan Alam (KOBA KIM 413, KD 2) dengan pendekatan STEM’S bebasis android dan hasil belajar mahasiswa  setelah menggunakan suplemen bahan ajar tersebut. Penelitian ini dilaksanakan pada bulan Februari-Juli 2020. Model yang digunakan pada penelitian pengembangan ini adalah ADDI (adaptasi dari model ADDIE) yang terdiri dari tahap analisis, perencanaan, pengembangan, penerapan. Penelitian ini dilakukan di Univeristas Bengkulu dengan subjek mahasiswa pendidikan kimia Universitas Bengkulu yang mengambil mata kuliah KOBA TA 2019/2020. Mahasiswa dengan NPM genap berjumlah 9 orang untuk uji coba skala kecil dan mahasiswa dengan NPM ganjil berjumlah 21 orang untuk  uji coba skala besar. Instrumen penelitian yang digunakan berupa angket kebutuhan, lembar validasi, angket respon, serta lembar evaluasi. Hasil penelitian ini diperoleh: (1) tingkat kelayakan suplemen bahan ajar dengan pendekatan STEM’S berbasis android, persentase kelayakan dari segi materi  yang didapat yaitu 92,86 % dengan kategori sangat layak sedangkan dari segi media yaitu 80,21 % dengan kategori sangat layak sehingga bahan ajar dinilai layak untuk diujicobakan; (2) Hasil uji coba skala kecil didapatkan respon baik dengan persentasi rata-rata 89,75% dengan ada perbaikan; (3) Hasil belajar mahasiswa setelah menggunakan suplemen bahan ajar KOBA didapatkan nilai rata-rata sebesar 57,3 yang masuk pada kategori lulus. sehingga dapat disimpulkan bahwa suplemen bahan ajar cara-cara isolasi dan identifikasi senyawa bahan alam dengan pendekatan STEM’S bebasis android yang telah dikembangkan dapat digunakan sebagai suplemen dalam proses pembelajaran KOBA
Workshop Aksara Ulu Sebagai Bentuk Pelestarian Budaya Tradisi Tulis Supriyadi, Rendi; Reswari, Argana; Putri, Pipin Melisa; Azzahra, Luthfiah Hardianti; Elvia, Rina
MAMMIRI: JURNAL PENGABDIAN MASYARAKAT Vol. 2 No. 1 (2025): Februari 2025
Publisher : Education and Talent Development Center Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/mammiri.v2i1.2486

Abstract

Suatu daerah pasti memiliki budaya ataupun tradisi yang berbeda atau tidak dimiliki oleh daerah yang lain. Budaya merupakan suatu cara hidup yang berupa warisan dari suatu suatu masyarakat yang berkembang dengan seiring perkembangan zaman dari generasi hingga generasi selanjutnya. Aksara Ulu Sumatra, sejak zaman dahulu, merupakan aksara tradisional yang digunakan oleh masyarakat Sumatra. Aksara ini memiliki bentuk yang unik dan rumit, dengan banyak tanda dan simbol yang memiliki makna mendalam. Namun sayangnya budaya ataupun tradisi tersebut sudah mulai banyak ditinggalkan apalagi untuk generasi muda sudah banyak yang tidak mengenal apa itu aksara ulu. Pelestarian budaya harus diadakan selalu tentunya untuk generasi muda yang harus ikut serta agar budaya dan tradisi tetap terjaga dengan baik. Oleh karena itu tujuan dari kegiatan workshop budaya yang dilakukan di SMA Negeri 2 Kota Bengkulu ini adalah sebagai bentuk pengenalan budaya dan tradisi sebagai pelestarian budaya yang ada dikhususnya provinsi Bengkulu.
SOSIALISASI DAN PRAKTIK PEMBUATAN SABUN CAIR MENGGUNAKAN ESENSTIAL OIL PADA MASYARAKAT DESA TAMBAK REJO BENGKULU UTARA Krisandini, Triana; Handayani, Dewi; Elvia, Rina
Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Vol. 5 No. 1 (2025): ANDROMEDA: Jurnal Pengabdian Masyarakat Rafflesia
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/andromeda.v5i1.42590

Abstract

Community service is a tridharma activity of higher education that must be carried out by all lecturers. The theme of this community service activity is Socialization and Practice of Making Liquid Soap Using Essential Oils in the Tambak Rejo Village Community, North Bengkulu. Soap is a primary material used in everyday life by the community in general. Making soap cannot be separated from the application of chemical concepts. In this community service activity, the community is given information and practice of making simple and easy-to-do soap. This activity was carried out in the Tambk Rejo Village Meeting Room, North Bengkulu. The expected output of this activity is in the form of  documentation  and publication articles from this community service activity. The expected result is an increase in understanding of making economical soap for everyday life. Keywords: Liquid Soap; Essential Oil; Chemistry Practice
Pengembangan E-Modul Terintegrasi Proyek Pada Materi Polimer Sintetis Di MAN 1 Kota Bengkulu Suandi, Nabilla Aprillia Nur; Elvia, Rina; Ginting, Sura Menda
ALOTROP Vol. 9 No. 2 (2025): Jurnal Penelitian Pendidikan dan Ilmu Kimia
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/alo.v9i2.45867

Abstract

Students’ understanding of synthetic polymer topics was still low due to the abstract nature of the material and the lack of supporting teaching resources. This study focused on developing a project-integrated chemistry e-module on the topic, aiming to produce a valid, practical, and effective learning resource. The development model used was ADDIE, which consisted of analysis, design, development, implementation, and evaluation stages. The validation results showed that the e-module was very feasible in terms of content with a score of 94% and feasible in terms of media with a score of 73%. After revision, the media score increased to 96% with a very feasible category. A small-scale trial involving 12 students of grade XII in the 2024/2025 academic year obtained very positive responses with an average of 94%. The implementation with 27 students of grade XI IPA 1 MAN 1 Bengkulu through pre-test and post-test resulted in an N-Gain score of 0.74 (high category). These findings proved that the developed e-module was effective in improving students’ understanding and was feasible to be used as an alternative chemistry learning resource on synthetic polymers.
Distribution of Soil organic carbon of volcanic soil along elevation gradient on Kaba Volcano Bengkulu Province Candra, I Nyoman; Parta Wijaya, Denny; Elvia, Rina
JOURNAL OF TROPICAL SOILS Vol. 31 No. 1: January 2026 (In Progress)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts..v31i1.%p

Abstract

Climate change is a global issue primarily driven by increased carbon dioxide levels in the atmosphere. Numerous studies have been conducted to reduce carbon dioxide emissions as a strategy to mitigate its effects. Soils, particularly volcanic soils, are known to store significant amounts of carbon - second only to deep-sea reservoirs. This study aims to investigate the soil organic carbon content distribution of volcanic soils along elevation gradient on Kaba Volcano in Bengkulu Province, Indonesia. Nine soil samples, both disturbed and undisturbed, were collected at a depth of 10 cm from three locations at different elevations: the foothill (1360–1380 m a.s.l.), hillside (1610–1620 m a.s.l.), and hilltop (1930–1940 m a.s.l.). Undisturbed samples were collected using a 70-mm core cylinder to determine soil bulk density, while disturbed samples were taken with a shovel and analyzed for soil organic carbon, pH, and particle size distribution (sand, silt, and clay). The results showed that the hillside samples had the highest soil organic carbon content, while the hilltop samples had the lowest. Correspondingly, the lowest soil pH was observed at the hillside, and the highest bulk density was found at the hilltop. Particle size analysis revealed that sand and clay content at the hillside were similar to those at the foothill and both were higher than those at the hilltop. The lower soil organic carbon at the hilltop may be attributed to drier conditions and reduced vegetation cover compared to the foothill and hillside.
Biochar From Palm Kernel Shell and Its Application For CU2+ Sorption Candra, I Nyoman; Sari, Irma; Abdullah, Rosazlin; Elvia, Rina; Handayani, Dewi
IJIS Edu : Indonesian Journal of Integrated Science Education Vol 8, No 1 (2026): January 2026
Publisher : UIN Fatmawati Sukarno Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29300/ijisedu.v8i1.9561

Abstract

Oil palm kernel shells (KS) are a byproduct of oil palm processing that often receives little attention and is treated as waste. Biochar has various applications for example as an adsorbent. This study aims to prepare and characterize biochar from KS and evaluate its effectiveness in adsorbing Cu2+. The biochar (BKS) was prepared by heating KS in a furnace at 500°C for three hours. The resulting material was sieved using a 50-mesh sieve to ensure uniformity. Characterization of BKS showed that it had a surface area of 319.9 m2 g-1, a total pore volume of 0.168 cm3 g-1, and an average pore size of 1.049 nm, classifying it as microporous. Analysis for its functional groups revealed the presence of functional groups with stretching vibrations corresponding to O-H (3400 cm-1), C-H (2920 cm-1), C=O (1700 cm-1), C=C (1432-1690 cm-1), and C-O (1000-1200 cm-1). SEM imaging displayed a clear porous structure with well-defined channels. Adsorption isotherm experiments demonstrated that Cu2+ adsorption data using BKS aligned better with the Freundlich isotherm model than with the Langmuir model. These findings indicate that BKS derived from KS is less effective for removing Cu2+ ions from water compared to other biochars.
Co-Authors Abdullah, Rosazlin Amida, Nadia Azzahra, Luthfiah Hardianti Budiyanto Budiyanto Candra, I Nyoman Dewi Handayani Irma Sari Krisandini, Triana Nurhamidah Nurhamidah Parta Wijaya, Denny Putri, Pipin Melisa Reswari, Argana Suandi, Nabilla Aprillia Nur Supriyadi, Rendi Sura Menda Ginting Yanti, Della Novri