Open Journal System (OJS) Universitas Bengkulu
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PENGEMBANGAN MEDIA PEMBELAJARAN INTERAKTIF KINETIKA REAKSI KOMPLEKS SEBAGAI UPAYA MENSTIMULASI KEMAMPUAN BERPIKIR SISTEMATIS MAHASISWA
Get PDFThis study aims to develop interactive learning media on the topic of complex reaction kinetics as an effort to stimulate students' systematic thinking skills. This type of research is development research using the ADDIE model. The test subjects in this study were students of the Chemistry Education Study Program who participated in the Chemistry Kinetics course in the 2022/2023 academic year. The data collection techniques in this study included feasibility data from the developed media based on expert validation of the media and material, as well as responses from students participating in the course regarding the developed media. The instruments used in this study were a questionnaire on the needs of course participants, a validation sheet, and a student response questionnaire. The results showed that the interactive learning media developed was deemed very feasible from the perspective of media and material validation, with average percentages for media and material validation of 92.5% and 93.75%, respectively. The results of the response test of students taking the Chemical Kinetics course to the interactive media developed showed an average score percentage of 86.6% and was in the very good category. The responses of the students also showed that the media developed could stimulate students' systematic thinking skills in the topic of complex reaction kinetics.Penelitian ini bertujuan untuk mengembangkan media pembelajaran interaktif pada topik kinetika reaksi kompleks sebagai upaya menstimulasi kemampuan berpikir sistematis mahasiswa Jenis penelitian ini merupakan penelitian pengembangan dengan menggunakan model ADDIE. Subjek uji coba dalam penelitian ini adalah mahasiswa Program Studi Pendidikan Kimia peserta mata kuliah Kinetika Kimia Tahun Akademik 2022/2023. Teknik pengumpulan data dalam penelitian ini berupa data kelayakan dari media yang dikembangkan berdasarkan validasi ahli terkait media dan materi,serta respon dari mahasiswa peserta MK terkait media yang dikembangkan. Instrumen pada penelitian ini yaitu angket kebutuhan peserta mata kuliah, lembar validasi, dan angket respons mahasiswa, Hasil penelitian menunjukkan bahwa media pembelajaran interaktif yang dikembangkan dinyatakan sangat layak dari tinjauan validasi media dan validasi materi dimana persentase rata-rata untuk validasi media dan materi secara berturut-turut adalah 92,5% dan 93,75%. Hasil uji respon peserta mata kuliah Kinetika Kimia terhadap media interaktif yang dikembangkan menunjukkan persentase skor rata-rata sebesar 86,6% dan berada dalam kategori sangat baik. Respon peserta mata kuliaj juga menunjukkan bahwa media yang dikembangkan dapat menstimulasi kemampuan berpikir sistematis mahasiswa dalam topik kinetika reaksi kompleks
Effect of Different Concentration of Liquid Organic Fertilizer and Varieties on The Growth and Yield of Red Chili (Capsicum annuum L.) in Sandy Soil
Get PDFSandy soils, characterized by high sand content (often exceeding 70-90%), exhibit low nutrient retention, poor water holding capacity, and reduced cation exchange due to their coarse texture and low organic matter. These properties pose significant challenges for red chili (Capsicum annuum L.) cultivation, often resulting in suboptimal growth and yield without amendments. This study aimed to evaluate the effects of varying concentrations of liquid organic fertilizer derived from vinasse and different red chili varieties on the growth and yield of red chili plants in such challenging soil conditions. The experiment was conducted in a greenhouse at the Faculty of Agriculture, Sarjanawiya Tamansiswa University, Yogyakarta. A 3 × 2 factorial design arranged in a Completely Randomized Design (CRD) with four replications was employed. The first factor consisted of liquid organic fertilizer concentrations at 5%, 6%, and 7%, while the second factor included two red chili varieties: F1 Gada and Prabu. Growth parameters measured were plant height, number of leaves, stem diameter, and number of branches. Yield components included fresh and dry plant weight, number of fruits, and fresh fruit weight. The results indicated no significant interaction between fertilizer concentration and chili variety on growth and yield parameters. However, the F1 Gada variety exhibited significantly greater fresh plant weight and number of fruits compared to Prabu. These findings suggest that selecting appropriate chili varieties, such as F1 Gada, combined with optimal liquid organic fertilizer concentration, can improve red chili production in sandy soils. This information is valuable for farmers and agricultural practitioners aiming to enhancecultivation efficiency and yield within sustainable farming systems.
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EFEKTIVITAS KONSELING KELOMPOK DENGAN TEKNIK EXPRESSIVE WRITING UNTUK MENINGKATKAN KEMAMPUAN PENGENDALIAN EMOSI SISWA SMP
Get PDFEmotional regulation is a crucial skill for students in dealing with academic and social pressures. However, many students still struggle to manage their emotions effectively. This study aims to examine the effectiveness of group counseling using the expressive writing technique in improving emotional regulation among junior high school students. The research employed a quantitative method with a pretest-posttest control group design. The sample consisted of 10 students divided into two groups: experimental and control. The experimental group received group counseling with the expressive writing technique, while the control group participated in group counseling without the technique. Data were collected using an emotional regulation scale administered before and after the intervention and analyzed using an Independent Sample T-test. The results showed a significant improvement in emotional regulation in the experimental group compared to the control group (p < 0.05). These findings indicate that group counseling with expressive writing is an effective strategy to help students manage their emotions. Therefore, this technique can be recommended as an alternative intervention for school counselors to enhance students’ emotional well-being.
Keywords: Group Counseling, expressive writing, emotion regulation, studentsPengendalian emosi merupakan keterampilan penting bagi siswa dalam menghadapi tekanan akademik dan sosial. Namun, banyak siswa masih mengalami kesulitan dalam mengelola emosi secara optimal. Penelitian ini bertujuan untuk menguji efektivitas konseling kelompok dengan teknik expressive writing dalam meningkatkan kemampuan pengendalian emosi siswa SMP. Metode yang digunakan adalah kuantitatif dengan desain pretest-posttest control group. Sampel terdiri dari 10 siswa yang dibagi menjadi dua kelompok: eksperimen dan kontrol. Kelompok eksperimen mendapat intervensi konseling kelompok dengan teknik expressive writing, sedangkan kelompok kontrol hanya mengikuti konseling kelompok biasa. Pengumpulan data dilakukan melalui skala pengendalian emosi sebelum dan sesudah intervensi, kemudian dianalisis menggunakan Independent Sample T-test. Hasil penelitian menunjukkan adanya peningkatan signifikan kemampuan pengendalian emosi pada kelompok eksperimen dibandingkan kelompok kontrol (p < 0,05). Temuan ini menunjukkan bahwa konseling kelompok dengan expressive writing efektif digunakan untuk membantu siswa dalam mengelola emosi. Oleh karena itu, teknik ini dapat dijadikan alternatif intervensi oleh guru BK untuk mendukung kesejahteraan emosional siswa
Pengaruh Layanan Bimbingan Klasikal dengan Metode Mind Mapping untuk Meningkatkan Literasi Kesehatan Mental pada Siswa
Get PDFThis study aims to determine the effect of classical guidance services with the mind mapping method on students' mental health literacy. This study uses a quantitative approach with a pretest-posttest control group design. The sample consisted of two classes VIII with a total of 60 students selected randomly using the spin wheel application. The instrument was in the form of multiple-choice questions based on three aspects of literacy according to Jorm (2000): knowledge, beliefs, and attitudes. Data were analyzed using the Independent Sample t-test using SPSS version 25. The results showed a significant difference between the gain scores of the two groups (t = 8.059; Sig. 2-tailed = 0.000). This shows that classical guidance services with the mind mapping method are able to improve students' understanding in a more visual, creative, and structured way compared to regular classical services, and provide a positive contribution in shaping students' attitudes towards mental health issues.
Keywords: classical guidance, mind mapping, mental healthPenelitian ini bertujuan untuk mengetahui pengaruh layanan bimbingan klasikal dengan metode mind mapping terhadap literasi kesehatan mental siswa. Penelitian ini menggunakan pendekatan kuantitatif dengan desain pretest-posttest control group. Sampel terdiri dari dua kelas VIII dengan jumlah total 60 siswa yang dipilih secara acak menggunakan aplikasi spin wheel. Instrumen berupa soal pilihan ganda berdasarkan tiga aspek literasi menurut Jorm (2000): pengetahuan, kepercayaan, dan sikap. Data dianalisis dengan uji Independent Sample t-test menggunakan SPSS versi 25. Hasil menunjukkan menunjukkan adanya perbedaan signifikan antara gain score kedua kelompok (t = 8,059; Sig. 2-tailed = 0,000). Hal ini menunjukkan bahwa layanan bimbingan klasikal dengan metode mind mapping mampu meningkatkan pemahaman siswa secara lebih visual, kreatif, dan terstruktur dibandingkan dengan layanan klasikal biasa, serta memberikan kontribusi positif dalam membentuk sikap siswa terhadap isu kesehatan mental
Efektivitas Layanan Bimbingan Klasikal Dengan Metode Sosiodrama Untuk Menurunkan Perilaku Intoleransi Pada Peserta Didik
Get PDFThis study aimed to prove the effectiveness of classical guidance services using the sociodrama method in reducing intolerant behavior among students. The research was conducted using an experimental method with a two-group pre-test post-test control design. The population of this study consisted of tenth-grade students at SMK Negeri 4 Kota Bengkulu, totaling 76 students. The research sample comprised 43 students, including 26 students in the experimental class and 17 students in the control class, who were selected using a purposive sampling technique. Data were collected using an intolerance behavior questionnaire based on a Likert scale. The pre-test and post-test results of the experimental class showed a decrease in the average score from 169 to 103, with a gain score of 66, while the control class decreased from 129 to 122, with a gain score of 7. Hypothesis testing using a t-test yielded a t value of 21.629 with Sig. (2-tailed) = 0.000 (p < 0.05), indicating a significant difference in intolerant behavior between students who received classical guidance services with the sociodrama method and those who received classical guidance without the method. Therefore, the findings showed that classical guidance services with the sociodrama method were effective in reducing intolerant behavior.
Keywords: classical guidance, intolerance, sociodrama methodPenelitian ini bertujuan untuk membuktikan efektivitas layanan bimbingan klasikal dengan metode sosiodrama dalam menurunkan perilaku intoleransi pada peserta didik. Penelitian dilakukan dengan metode eksperimen menggunakan desain two group pre-test post-test control design. Populasi penelitian adalah peserta didik kelas X SMK Negeri 4 Kota Bengkulu yang berjumlah 76 siswa. Sampel penelitian berjumlah 43 siswa, terdiri dari 26 siswa kelas eksperimen dan 17 siswa kelas kontrol, dipilih dengan teknik purposive sampling. Teknik pengumpulan data menggunakan angket perilaku intoleransi berbasis skala likert. Hasil pre-test dan post-test kelas eksperimen menunjukkan penurunan rata-rata skor 169 menjadi 103 dengan gain score 66, sedangkan kelas kontrol rata-rata skor dari 129 menjadi 122 dengan gain score 7. Hasil uji hipotesis dengan uji t-test dengan nilai 21.629 dan nilai Sig. (2-tailed) 0,000 menunjukkan terdapat perbedaan tingkat perilaku intoleransi antara peserta didik yang menerima layanan bimbingan klasikal dengan metode sosiodrama dan peserta didik yang menerima layanan bimbingan klasikal tanpa metode sosiodrama. Maka hasil penelitian menunjukkan bahwa terdapat efektivitas layanan bimbingan klasikal dengan metode sosiodrama untuk menurunkan perilaku intoleransi.
Kata kunci: bimbingan klasikal, intoleransi, metode sosiodrama
 
PENGARUH LAYANAN KONSELING KELOMPOK CBT DENGAN TEKNIK RESTRUKTURISASI KOGNITIF TERHADAP KETERAMPILAN SOSIAL SISWA TERISOLIR
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This research aimed to determine the effect of CBT group counseling services with cognitive restructuring techniques on the skills of isolated students. This research method used a Nonequivalent Control Group Design experiment. The population in the study was eighth-grade students of SMP Negeri 11 Kota Bengkulu. The research sample consisted of 12 students selected using a purposive sampling technique based on the results of social skills questionnaires and sociometric questionnaires. The research was conducted by comparing two groups that were given different services, where the experimental group was more effective than the control group. The t-test result for the experimental group and the control group was 3.095. This indicated that the results of this study showed an effect of CBT group counseling services with cognitive restructuring techniques on improving the social skills of isolated students.
Keywords: social skill, CBT group counseling, restructuring cognitivePenelitian ini bertujuan untuk mengetahui pengaruh layanan konseling kelompok CBT dengan teknik restrukturisasi kognitif terhadap keterampilan siswa terisolir. Metode penelitian ini menggunakan metode eksperimen Nonequivalent Control Group Design. Populasi dalam penelitian adalah siswa kelas VIII SMP Negeri 11 Kota Bengkulu. Sampel penelitian berjumlah 12 siswa dipilih menggunakan teknik purpossive sampling yang berasal dari hasil angket keterampilan sosial dan angket sosiometri. Penelitian dilakukan dengan membandingkan dua kelompok yang diberikan layanan berbeda yang mana kelompok eksperimen lebih efektif daripada kelompok kontrol. Hasil uji-t pada kelompok eksperimen dan kelompok kontrol adalah 3,095. Hal ini menunjukkan bahwa hasil penelitian ini terdapat pengaruh layanan konseling kelompok CBT dengan teknik restrukturisasi kognitif untuk meningkatkan keterampilan sosial siswa terisolir.Kata kunci: keterampilan sosial, konseling kelompok CBT, teknik restrukturisasi kogniti
Penerapan Sikap Tanggung Jawab Siswa Pada Pembuatan Karya Seni Menggambar Dekoratif Kelas III SD
Get PDFThis study aims to describe the process of making and applying a responsible attitude in making decorative drawing works of art in class III SD Negeri 57 Bengkulu City. This type of research is a qualitative research with descriptive method. The subjects of this study were third grade students at SD Negeri 57 Bengkulu City. The instruments used in this study were observation sheets, interviews and documentation. Data analysis was carried out by data collection, data reduction, data display, data verification. Data validity uses technical triangulation and member checks. The results of this study were that all groups had followed all stages in the process of making decorative drawing workart. On average, all groups experienced difficulties in determining motives and drawing them. Groups 1, 2, 3 and 4 use bright colors to color their work. During the process of making decorative drawing artwork, almost all students have applied a responsible attitude. Only in groups 2 and 3 were the students noisy and had no focus but were immediately reprimanded by their group mates. Based on the results of the study it can be concluded that the process of making decorative drawing works of art has been carried out by students sequentially and the attitude of responsibility has been described based on the indicators, but there are still deficiencies in its application so it needs improvement in the future
Laporan Pertama Meloidogyne incognita yang Menginfeksi Tanaman Melon (Cucumis melo L.) pada Media Cocopeat di Bengkulu, Indonesia
No full textCocopeat, a growing medium derived from coconut husk fibers, is valued for its high porosity, strong water retention, and support for healthy root development. However, its physical properties may also provide favorable conditions for plant-parasitic nematodes. This study reports, for the first time, the occurrence of Meloidogyne incognita in melon (Cucumis melo L.) cultivated in cocopeat in Bengkulu, Indonesia, and examines the susceptibility of this medium to infestation. Root samples were purposively collected from six infected plants showing stunted growth, wilting, and root galling. Adult female nematodes were extracted and identified morphologically through perineal pattern analysis. The diagnostic features, such as a tall, narrow dorsal arch, fine striae, and the absence of lateral lines, consistently matched those of M. incognita. Galls of varying sizes were observed in all samples, indicating different infection intensities. This finding suggests that the physical structure of cocopeat may facilitate nematode mobility and persistence across growth stages. The study highlights that cocopeat is not inherently nematode-free despite its agronomic advantages and should be managed through preventive strategies, including substrate sterilization, sanitation, and regular nematode monitoring
ANALISIS PENINGKATAN HASIL BELAJAR FISIKA KELAS X MELALUI PROGRAM ASISTENSI MENGAJAR BERBASIS INOVASI PEMBELAJARAN DI SMA NEGERI 11 KOTA BENGKULU
Get PDFABSTRAK
Pembelajaran fisika di abad ke-21 menuntut strategi yang mampu meningkatkan pemahaman konsep melalui keterlibatan aktif siswa. Observasi awal di SMA Negeri 11 Kota Bengkulu menunjukkan bahwa pembelajaran fisika masih berpusat pada guru sehingga berdampak pada rendahnya hasil belajar siswa. Penelitian ini bertujuan untuk menganalisis peningkatan hasil belajar fisika siswa kelas X melalui penerapan pembelajaran inovatif dalam Program Asistensi Mengajar (AM). Penelitian menggunakan metode kuantitatif dengan desain One Group Pretest–Posttest pada tiga kelas, yaitu X.A, X.B, dan X.C. Instrumen penelitian berupa tes pilihan ganda yang diberikan sebelum (pretest) dan setelah perlakuan (posttest). Program pembelajaran inovatif mencakup penggunaan Problem-Based Learning (PBL), pendekatan deep learning, media visual, simulasi digital, dan asesmen interaktif berbasis Kahoot. Hasil penelitian menunjukkan adanya peningkatan rata-rata nilai di ketiga kelas, dari rentang pretest 43,5–48 menjadi 68,9–70,2 pada posttest. Ketuntasan belajar meningkat dari 2,9%–15% menjadi 35%–56%. Analisis menggunakan Normalized Gain (N-gain) menunjukkan kategori peningkatan sedang dengan nilai 0,42–0,44. Temuan ini menunjukkan bahwa penerapan inovasi pembelajaran melalui Program AM berkontribusi dalam meningkatkan hasil belajar fisika siswa, meskipun peningkatan belum mencapai ketuntasan klasikal.
Kata kunci— hasil belajar, inovasi pembelajaran, problem-based learning, asesmen interaktif
ABSTRACT
Physics education in the 21st century requires strategies that can improve conceptual understanding through active student engagement. Initial observations at SMA Negeri 11 Kota Bengkulu show that physics education is still teacher-centered, resulting in low student learning outcomes. This study aims to analyze the improvement in physics learning outcomes of 10th grade students through the application of innovative learning in the Teaching Assistance Program (AM). The study used a quantitative method with a One Group Pretest-Posttest design in three classes, namely X.A, X.B, and X.C. The research instrument was a multiple-choice test administered before (pretest) and after the treatment (posttest). The innovative learning program included the use of Problem-Based Learning (PBL), a deep learning approach, visual media, digital simulations, and Kahoot-based interactive assessments. The results showed an increase in the average scores in all three classes, from a pretest range of 43.5–48 to a posttest range of 68.9–70.2. Learning completeness increased from 2.9%–15% to 35%–56%. Analysis using Normalized Gain (N-gain) showed a moderate improvement category with a value of 0.42–0.44. These findings indicate that the application of learning innovation through the AM Program contributes to improving students' physics learning outcomes, although the improvement has not yet reached classical completeness.
Keywords— learning outcomes, learning innovation, problem-based learning, interactive assessmen
Pengaruh Diameter Batang Dan Komposisi Stimulan Asam Sulfat (H2SO4) dan Asam Nitrat (HNO3) Terhadap Produktivitas Getah Pinus (Pinus Merkusii Jungh Et De Vriese)
Get PDFPine resin (Pinus merkusii Jungh. et de Vriese) is a non-timber forest product with high economic value; however, in Parsingguran 1 Village, Pollung District, Humbang Hasundutan Regency, its potential has not been optimally utilized due to the improper and unmeasured application of chemical stimulants. This study aimed to evaluate the effects of stem diameter and the composition of sulfuric acid (H₂SO₄) and nitric acid (HNO₃) stimulants on the productivity and quality of pine resin, as well as to analyze the interaction between these factors. The research was conducted in June 2025 using an experimental method arranged in a factorial Randomized Complete Block Design. The treatments consisted of four stem diameter classes (25–30 cm, 31–35 cm, 36–40 cm, and 41–45 cm) and four stimulant combinations (control, H₂SO₄ 10% + HNO₃ 10%, H₂SO₄ 20% + HNO₃ 10%, and H₂SO₄ 30% + HNO₃ 10%), with three replications. Data were analyzed using two-way ANOVA followed by Tukey’s test when significant differences were detected. The results indicated that both factors had a significant effect on resin yield, with the highest production obtained from the combination of H₂SO₄ 30% + HNO₃ 10% applied to trees with a stem diameter of 41–45 cm. The use of stimulants also reduced the moisture and impurity content of the resin without affecting its color. Overall, this treatment was considered the most effective for enhancing pine resin productivity in large-diameter trees and can be applied to achieve efficient and sustainable tapping practices.
Keywords: Pinus merkusii; pine resin; stem diameter; sulfuric acid; nitric acid; productivit