Jurnal Penelitian Pendidikan IPA (Science Education Graduate Program University of Mataram)
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Profil Berpikir Kritis Siswa SMP pada Mata Pelajaran IPA
No full textBerpikir kritis adalah keterampilan fundamental dalam pendidikan abad ke-21, yang penting untuk menganalisis informasi, mengevaluasi bukti, dan membuat keputusan yang logis. Dalam pembelajaran sains, berpikir kritis memainkan peran penting dalam membantu siswa memahami konsep-konsep kompleks serta mengembangkan keterampilan pemecahan masalah secara sistematis. Namun, studi-studi sebelumnya menunjukkan bahwa siswa sekolah menengah pertama (SMP) di Indonesia menunjukkan tingkat kemampuan berpikir kritis yang relatif rendah. Penelitian ini bertujuan untuk menganalisis profil berpikir kritis siswa SMP dalam pembelajaran sains dan mengidentifikasi faktor-faktor yang mempengaruhi perkembangannya. Desain penelitian deskriptif kuantitatif digunakan dengan memanfaatkan kuesioner skala Likert untuk menilai tujuh indikator utama berpikir kritis, yaitu: rasa ingin tahu, kepercayaan diri, pencarian kebenaran, keterbukaan pikiran, kemampuan analitis, sistematis, dan kedewasaan. Data dianalisis menggunakan teknik statistik deskriptif untuk menentukan tingkat berpikir kritis siswa. Hasil penelitian mengungkapkan bahwa sebagian besar siswa berada dalam kategori “sedang” terkait persepsi terhadap kemampuan berpikir kritis. Di antara ketujuh indikator, keterbukaan pikiran (70%) dan kedewasaan (72%) diklasifikasikan dengan kriteria tinggi, yang menunjukkan bahwa kemampuan siswa untuk menerima perspektif baru dan berpikir secara objektif. Sementara itu, kepercayaan diri (58%) dan sistematis (63%) merupakan indikator dengan skor terendah, yang menunjukkan adanya kelemahan dalam berpikir terstruktur dan pengambilan keputusan. Meskipun siswa telah menunjukkan dasar berpikir kritis yang memadai, perbaikan masih diperlukan dalam aspek kepercayaan diri, keterampilan analitis, dan pemikiran sistematis. Penelitian ini merekomendasikan integrasi strategi Problem-Based Learning (PBL) dan pendekatan STEM untuk meningkatkan kemampuan berpikir kritis siswa dalam pembelajaran IPA
The Impact of Fertilizer Subsidy Policies on The Profits and Welfare of Rice Farmers: Lessons from Sumbawa West District
No full textThe objectives of this study were to analyze the impact of fertilizer subsidy policies on production, profits, and surplus of rice farmers, and to compare productivity, profits, and surplus of rice farmers. The study was conducted in Brang Rea District, West Sumbawa Regency. The respondents in this study were farmers who owned rice farmers with details of 30 farmers who received fertilizer subsidies and 30 farmers who did not receive fertilizer subsidies. Data were collected through observation, surveys, and in-depth interviews. Data were analyzed using the optimization of the Cobb-Douglas production and profit functions. The results of the study concluded that the impact of fertilizer subsidy policies on production was positive and significant, while the impact on profits was positive but not significant. There was a significant difference between productivity and capital costs or production facility costs between the group of farmers who received fertilizer subsidies and the group of farmers who did not receive fertilizer subsidies, but there was a difference in labor costs and profits but not significant. The level of farmer welfare in the group of farmers who received subsidies was higher than the group of farmers who did not receive subsidies
Ethnopedagogy through Project Based Learning as an Effort to Improve Students’ Self-regulated Learning
No full textThe aim of this research is to determine the impact of applying an ethnopedagogical approach through project based learning (PjBL) on students' self-regulated learning (SRL). This research uses the quasi experimental method and pretest-posttest non-equivalent control group design. As many as 100 of 353 students class X at SMAN 3 Banda Aceh were selected through purposive sampling technique. A non-test instrument was used to measure students' SRL. Data were analyzed using descriptive statistics and an independent sample t test. The result of the hypothesis test illustrates the sig. > 0.05 (0.566 > 0.05), then H0 accepted. The result of descriptive analysis shows that the increase of the average score in the experimental group was greater than the control group after the intervention. Thus, applying an ethnopedagogical approach through PjBL provides a positive impact on increasing the students’ SRL but there is no significant influence
Sebaran jenis Fitoplankton pada Ekosistem Mangrove, Lamun dan Terumbu Karang di Perairan Sekotong Barat, Lombok Barat
No full textThe West Sekotong coastal area, which includes mangrove, seagrass, and coral reef ecosystems, is rich in marine biota, particularly phytoplankton communities. These ecosystems have been designated as conservation areas; however, increasing exploitation and disturbances in the region have impacted the presence and distribution of phytoplankton. This study aimed to assess the distribution, abundance, and species diversity of phytoplankton across these three ecosystems. Using purposive sampling, phytoplankton communities were identified microscopically, revealing a total of 742 phytoplankton cells, with 264 cells in the mangrove, 258 cells in seagrass, and 220 cells in the coral reef ecosystems. The class Bacillariophyceae dominated across all ecosystems. Specific species dominance varied, with Skeletonema costatum prevailing in mangroves, Nitzschia sigmoidhea in seagrass, and Coscinodiscus radiatus in coral reefs. The highest similarity index (35.89%) was observed between mangrove and seagrass ecosystems, while the lowest (30.87%) occurred between mangrove and coral reefs. The species richness index (R) was high in all ecosystems, ranging from 6.45 to 10.26, and dominance indices were low, indicating a balanced community structure. Environmental parameters measured across the ecosystems showed no significant differences and met the quality standards for marine biota as per KEPMENLH No 51 2004
Development of Canva-based Interactive Learning Media for Elementary School IPAS Learning
No full textThis study aims to enhance the learning environment in elementary school IPAS (Integrated Science and Social Studies) classes by developing Canva-based interactive learning media. The focus is on making learning more engaging and effective, addressing issues with traditional teaching methods that can leave students feeling bored. The research employs the Research and Development (R&D) approach using the ADDIE model, which includes five stages: Analysis, Design, Development, Implementation, and Evaluation. Data collection instruments consist of pretests, posttests, and questionnaires to gather feedback from students and teachers. Expert validation results indicate that the learning media is very feasible, with material experts rating it at 92% and media experts at 96%. N Gain tests show significant improvement in student learning outcomes. Feedback from students and teachers is also highly positive, with 97.77% from small-group students, 97.08% from large-group students, and 100% from teacher. Based on the values obtained, canvas-based interactive learning media in elementary school IPAS learning can be said to have been developed that is feasible and effective to improve the learning outcomes of Class V students at SD Negeri Nongkosawit 02.In learning activities, teachers must create a pleasant atmosphere so that students do not feel bored and inactive. This is because the learning used by the teacher has not yet been linked to digital. In the use of learning media, the teacher has not been fully varied. This study aims to produce Canva-based interactive learning media development products, test the feasibility of Canva-based interactive learning media, and analyze the validity of Canva-based interactive learning media. This research uses the Research and Development (R&D) research and development method using the ADDIE development model which has five stages: Analysis, Design, Development, Implementation, Evaluation. Instruments used to collect data: pretest, posttest, and questionnaire. Material expert validity test data and media expert validation were analyzed using descriptive percentage techniques. The results of the expert validator test were obtained: the assessment of the material expert validator obtained a percentage of 92% which indicated very feasible criteria. The evaluation of the media specialist validator obtained a percentage of 96% which showed that the media was very doable. N Gain test data shows an increase in student learning outcomes. Student and teacher response data on Canva-based interactive learning media used, among others: small group student responses obtained a percentage of 97.77%, large group student responses obtained a percentage of 97.08%, and teachers obtained a percentage of 100%. Based on the value obtained, the Canva-based interactive learning media in elementary school IPAS learning can be said to be very feasible to use in learning
Improving Lake Water Clarity by Cultivation of Water Hyacinth (Eichornia crassipes)
No full textResearch on the use of water hyacinth (WH) to improve the quality of polluted water has been widely reported, but discussions on the ability of WH to clear turbid water are still rare. This research examines the possibility of using WH as a natural clarifier for Lake Bata. Treatments with 3 variations in the percentage of lake closure with WH cultivation (25, 50, and 75%) were applied for 40 days with 3 repetitions. Water quality and turbidity measurements were carried out every 4 days. The data was analyzed descriptively in graphical form to see a model of these changes. It was found that the pollutants Fe, Hg, nitrate, phosphate and ammonia were present in very small and safe quantities, but the water turbidity level did not meet the standards of the Indonesian Minister of Health yet. During the WH growth, the turbidity decreasing follows the equation Y(25) = - 0.114x + 28.52; Y(50) = -0.195x + 29.83; and Y(75) = -0.235x + 30.14 for cover percentages of 25, 50 and 75% respectively, where y for the turbidity (NTU) and x for WH growth time (days). To meet turbidity standards, WH coverage percentages of 25, 50, and 75%, require cultivation periods of 32, 28, and 24 days, respectively
Measurement of CT Number Uniformity Value at Various X-ray Tube Current Settings in CT Scanning
No full textStudies on the analysis of variations in CT number uniformity values for CT-Scan images has been conducted. This study aims to evaluate the image quality value by uses various tube currents (mAs) in Siemens merk water phantom irradiation to assess the value of image quality. A Siemens Somatom Scope CT-Scan with current variations of 180 mAs, 200 mAs, 220 mAs, 240 mAs, and 260 mAs was used. The image results were then anlyzed for quality through the CT number uniformity value test. Using a marker size of 12.56 cm2, the ROI method was applied at five different picture points: the center, 3, 6, 9, and 12 o'clock. For each current variation used in this study, 3 irradiation was carried out and 5 image slices were taken from each irradiation.This resulted of the analysis the CT number uniformity value was shown to be significantly reduced by the tube current strength (R2=0.9896, p-value<0.05), according to the research. The test showed that the uniformity CT number value decreased from 0.217 HU to 0.031 HU as the tube current strength was increased, bringing it closer to the reference value (0 HU). The consistency CT number values acquired in this study remain within the 2 HU tolerance limits established by BAPETEN
The Effect of Scaffolding Strategies on Learning Outcomes in Science Learning: A Systematic Literature Review
No full textScience learning must be designed so that students can understand natural phenomena that are constantly changing. This study aims to explore scaffolding strategies related to research trends, influence on learning outcomes, appropriate learning models, research designs used, and profiles of the use of scaffolding in science learning at various levels of education. The research is a systematic literature review (SLR) to collect, analyze, and compile findings on scaffolding strategies in science learning. The literature review results show that scaffolding strategies are effective in helping students understand scientific concepts better. Providing structured scaffolding to students effectively improves students’ learning outcomes. The literature review results show that in the 2014-2024 time span, research on the application of scaffolding mostly uses quantitative methods with a non-equivalent control group design. The learning model that is widely used with scaffolding is Problem-Based Learning (PBL). Scaffolding positively impacts students' cognitive and affective learning outcomes, concept understanding, science process skills, argumentation skills, critical thinking skills, higher-order thinking skills (HOTS), learning independence, learning motivation, scientific literacy, problem-solving skills, and misconceptions. The scaffolding strategies can improve science learning effectively
Pengembangan Media Pembelajaran Interaktif Berbasis Website untuk Meningkatkan Kemampuan Berpikir Kritis dan Literasi Kesehatan Siswa pada Materi Sistem Pertahanan Tubuh Kelas XI SMA
No full textThis study aims to develop website-based learning media on the body's defense system and test interactive learning media's feasibility, practicality, and effectiveness to improve students' critical thinking skills. They used the ADDIE model (analysis, design, development, implementation, and evaluation). The trial of interactive learning media based on the body's defense system website was conducted using a pseudo-experimental research method using a non-equivalent pretest-posttest control design. The number of field trial subjects was 60 students from class XI MIPA SMA Negeri 1 Cangkringan, consisting of 30 experimental class students and 30 control class students. The data sampling technique used a critical thinking skills test questionnaire. The effect of website interactive learning media on essential thinking skills was measured using SPSS 26 with t-test, effect size, and correlation test. The results showed that the website-based interactive learning media is feasible and practical for teachers and students. This media is efficacious in improving students' critical thinking skills.Penelitian ini bertujuan untuk mengembangkan media pembelajaran sistem pertahanan tubuh berbasis website dan menguji kelayakan, kepraktisan, dan efektivitas media pembelajaran interaktif untuk meningkatkan kemampuan berpikir kritis siswa. Penelitian ini menggunakan model ADDIE (analisis, desain, pengembangan, implementasi, dan evaluasi). Uji coba media pembelajaran interaktif berbasis website sistem pertahanan tubuh dilakukan dengan menggunakan metode penelitian pseudo-eksperimental dengan desain non-equivalent pretest-posttest control design. Subjek uji coba lapangan berjumlah 60 siswa kelas XI MIPA SMA Negeri 1 Cangkringan, terdiri dari 30 siswa kelas eksperimen dan 30 siswa kelas kontrol. Teknik pengambilan sampel data menggunakan angket tes kemampuan berpikir kritis. Pengaruh media pembelajaran interaktif website terhadap keterampilan berpikir kritis diukur menggunakan SPSS 26 dengan uji t, effect size, dan uji korelasi. Hasil penelitian menunjukkan bahwa media pembelajaran interaktif berbasis website layak dan praktis bagi guru dan siswa. Media ini efektif dalam meningkatkan kemampuan berpikir kritis sisw
Effectiveness of Gymnastics Dysmenorrhoea and Deep Breathing Relaxation Techniques to Reduce Mensual Pain in Adolescent Women Indonesia
No full textMenstrual pain is a common issue among adolescent girls, often disrupting their daily activities. To address dysmenorrhea, one effective approach is the use of dysmenorrhea exercises and deep breathing relaxation techniques. This study investigates the effectiveness of these methods in reducing menstrual pain among adolescent girls in Indonesia. Utilizing a quasi-experimental design with a pretest-posttest with control group, the research sampled 210 adolescent girls experiencing menstrual pain, selected through purposive sampling. Data was collected via observation sheets and analyzed using paired sample t-tests and independent t-tests. The findings show that before the dysmenorrhea exercises, most participants experienced moderate pain (63.80%), which decreased to mild pain (74.30%) afterward. Similarly, before the deep breathing technique, most participants had moderate pain (76.20%), which reduced to mild pain (58.10%) post-intervention. Both dysmenorrhea exercises (p-value 0.000) and deep breathing techniques (p-value 0.000) were effective in reducing pain, but dysmenorrhea exercises proved more effective. Adolescent girls are encouraged to regularly perform dysmenorrhea exercises and deep breathing techniques for 30 minutes daily during the week leading up to menstruation to manage menstrual pain effectively