Jurnal FKIP Universitas Mataram (Fakultas Keguruan Dan Ilmu Pendidikan)
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The Effect of NPK Based Sensors on Hydroponic Growth of Caisim Plants (Brassica Chinensis var. Parachinensis)
Full text linkThis study aims to make hydroponic plant cultivation the right alternative to overcome land limitations without the need for soil media. This study aims to determine the impact of using NPK-based sensors on the development of Caisim plants (Brassica Chinensis Var. Parachinensis) in a hydroponic system. The research design used a Completely Randomized Design (CRD) with two treatments, namely hydroponics with and without the help of IoT-based NPK sensors. Parameters include plant height, number and area of leaves, fresh weight, and dry weight. Data were analyzed using an unpaired T test at a significance level of 5%. The results show that the use of NPK sensors has a significant effect on most growth indicators, except for dry weight. The application of this sensor has been shown to increase the efficiency of nutrient absorption needed by plants. Therefore, this technology is worthy of being a modern solution in hydroponic cultivation to optimize production results efficiently
The Application of Liquid Organic Fertilizer Increasing the Productivity of Pakchoy Plants (Brassica rapa L.) in Soil with Low Nutrient Content
Full text linkOrganic farming plays a very important role in maintaining environmental balance because it can reduce the use of harmful synthetic chemicals. This LOF is considered capable of enhancing soil fertility and supporting plant growth, while simultaneously reducing waste from the aquaculture sector. This study aims to evaluate the effect of liquid organic fertilizer (LOF) from catfish pond wastewater on the productivity of pakcoy (Brassica rapa L.) plants grown in soil with low nutrient content. The research was conducted in the experimental field of Universitas Gunadarma, East Jakarta, using 18 combinations of POC treatments with various concentrations and five varieties of pakcoy. Data were analyzed using the F-test to determine the overall treatment effect, followed by the Duncan Multiple Range Test (DMRT) at a 5% significance level to compare between treatments. The research results show that the application of POC from catfish pond wastewater has a positive effect on the growth of pakcoy compared to the control. A POC concentration of 0.75 ml/L yielded the best results in most parameters, including plant height, number of leaves, as well as leaf length and width. Although not all treatment combinations yielded significant results, the use of POC generally shows great potential in increasing the productivity of pakcoy plants. POC from catfish pond wastewater is not only effective as an organic fertilizer but also supports sustainable agriculture by reducing the negative impact of aquaculture waste on the environment. This research recommends POC as an environmentally friendly fertilizer alternative to improve agricultural yields, especially in areas with low nutrient content, through gradual soil quality improvement
Halophilic Bacteria as Promising Biocatalyst Producers: A Review on Enzyme Production
Full text linkHalophilic bacteria, a group of extremophiles adapted to high-salinity environments, have emerged as valuable sources of relevant biocatalysts. This review aims to compile and analyse current knowledge on the enzymatic potential of halophilic bacteria. Using a systematic literature review as its primary methodology to collect, examine, and integrate academic findings on halophilic bacteria as promising sources of biocatalysts. This review highlights that halophilic bacteria possess remarkable physiological and biochemical adaptations that enable them to survive osmotic stress, with recent advances in genetic engineering and synthetic biology enhancing their enzyme production and functional efficiency. These findings underscore their potential as robust and efficient biocatalysts for sustainable industrial applications. In conclusion, halophilic bacteria represent valuable resources for biotechnology, particularly in extreme conditions where conventional enzymes fail. Future research should focus on in-depth genomic and proteomic analyses, metabolic engineering for optimized enzyme yields, industrial-scale feasibility studies, environmental impact assessments, and cross-disciplinary collaborations to fully harness their capabilities in real-world applications
Analysis of High School Students' Creative Thinking Ability in Dynamic Fluid Topics
Full text linkCreative thinking ability (CTA) is essential for generating innovative solutions to real-world challenges. This study analyzes high school students' CTA on dynamic fluid topics, focusing on subtopics of flow rate, continuity principle, and Bernoulli's principle. A quantitative survey was conducted with 33 students from a high school in Malang, Indonesia, using a validated essay-based Creative Thinking Ability Test (reliability: 0.880). Descriptive statistics and rubric-based scoring (0–4 scale) categorized CTA levels. Results indicated an overall low CTA (average score: 26.52/100), with flow rate subtopic scoring "very low" (18.18%), while continuity and Bernoulli’s principles scored "low" (34.85% and 26.01%). Indicators like fluency, flexibility, originality, and elaboration were underdeveloped, as students struggled to generate diverse ideas, link concepts, and elaborate solutions. Dominant teacher-centered learning and fragmented conceptual understanding were identified as contributing factors. The study recommends integrating authentic problem-based learning (aPBL), project-based learning (PjBL), and technology-enhanced simulations to foster CTA. These findings highlight the urgency of reforming physics pedagogy to align with 21st-century skill demands
Analysis of Rainfall Distribution and Climate Classification in Response to Flood Events in Lebong Regency, Indonesia
Full text linkThis study aims to analyze the distribution and time series of rainfall in Lebong Regency, using a case study of the flood event on April 16, 2024, and to analyze the condition of climate change in Lebong Regency from 2014 to 2024. This research uses daily rainfall data to examine flood events and monthly data over 11 years from 2014 to 2024 for climate classification analysis with 10 rainfall observation stations using the Schmidt-Ferguson method. The results of the data processing were analyzed using descriptive and quantitative methods. Based on the research results, it was found that the distribution of rainfall before, during, and after the flood event experienced a significant change. Before the incident, the lowest rainfall in Lebong Regency was recorded at the Bungin, Gunung Alam, Rimbo Pengadang, and Semelako Atas Stations with a value of 0 mm/day (no rain). Rainfall increased on the day of the flood in several sub-districts, with the highest recorded at the Lemeu Station in Uram Jaya sub-district, reaching 101 mm/day. Meanwhile, after the day of the flood, the rainfall was 12 mm/day. Meanwhile, the climate classification based on the Schmidt-Ferguson method shows that the rainfall in Lebong Regency falls into the wet to very wet climate category. The very wet climate category in Lebong Regency is represented by the Bungin station, with rainfall amounting to 1166 mm/month in January 2020. Based on the 11-year average data, the highest rainfall occurs in November, amounting to 537.58 mm/year. The study also contributes to understanding local flood risk based on long-term rainfall classification, which has rarely been explored in the Bengkulu region
Penguatan Keterampilan SDM SAPRASIN UMB Melalui Pelatihan Perakitan, Instalasi, dan Perbaikan PC
Full text linkKegiatan penguatan keterampilan sumber daya manusia (SDM) di bidang Sarana dan Prasarana Informatika (SAPRASIN) Universitas Muhammadiyah Bengkulu (UMB) dilaksanakan melalui pelatihan perakitan, instalasi, dan perbaikan PC. Pelaksanaan kegiatan pelatihan ini bertujuan untuk meningkatkan keterampilan Sumber Daya Manusia (SDM) di lingkungan SAPRASIN Universitas Muhammadiyah Bengkulu (UMB) dalam bidang teknologi informasi, khususnya pada aspek perakitan, instalasi, dan perbaikan komputer. Seiring dengan perkembangan teknologi yang pesat, keterampilan teknis menjadi sangat penting bagi tenaga pendukung universitas untuk memastikan kelancaran operasional dan pemeliharaan perangkat keras komputer. Metode yang digunakan dalam pelatihan ini meliputi sesi teori, demonstrasi, serta praktik langsung yang dipandu oleh instruktur berpengalaman. Peserta diberikan materi tentang komponen perangkat keras, proses perakitan komputer, instalasi sistem operasi dan perangkat lunak, serta teknik dasar dan lanjutan dalam perbaikan komputer. Hasil dari pelatihan ini menunjukkan adanya peningkatan signifikan dalam pemahaman dan keterampilan peserta. Evaluasi yang dilakukan melalui tes praktik dan kuesioner kepuasan menunjukkan bahwa 85% peserta merasa lebih percaya diri dalam menangani permasalahan komputer secara mandiri. Selain itu, pelatihan ini juga berkontribusi pada efisiensi kerja di lingkungan SAPRASIN UMB karena adanya tenaga internal yang mampu mengatasi kendala teknis tanpa perlu bantuan eksternal. Dengan demikian, pelatihan ini berhasil mencapai tujuannya dalam memperkuat keterampilan SDM SAPRASIN UMB, serta memberikan dampak positif terhadap pengelolaan infrastruktur teknologi di universitas
Media Tiga Dimensi sebagai Sarana Meningkatkan Kemampuan Guru IPA dalam Menerapkan Pembelajaran Berbasis Masalah di Kelas
Full text linkPenggunaan media pembelajaran yang kontekstual dan mendukung pemecahan masalah menjadi salah satu tuntutan Kurikulum Merdeka dalam pembelajaran Ilmu Pengetahuan Alam (IPA). Artikel ini bertujuan untuk mendeskripsikan dampak pelatihan pengembangan media sederhana tiga dimensi terhadap peningkatan kemampuan guru IPA dalam menerapkan pembelajaran berbasis masalah (Problem-Based Learning/PBL). Kegiatan pelatihan dilaksanakan di SMPN 2 Jonggat dengan melibatkan guru IPA sebagai peserta. Metode pelaksanaan mencakup pemberian materi, pengenalan media 3D oleh tim pengabdian, serta pelatihan penggunaan media 3D yang terintegrasi dengan kemampuan pemecahan masalah. Data dikumpulkan melalui angket persepsi, analisis dokumen Rencana Pelaksanaan Pembelajaran (RPP), dan wawancara mendalam. Hasil menunjukkan bahwa sebagian besar guru mengalami peningkatan pemahaman tentang prinsip-prinsip PBL dan mampu mengintegrasikan media 3D ke dalam skenario pembelajaran yang relevan dengan konteks lokal. Selain itu, guru menyatakan bahwa media 3D membantu siswa lebih mudah memahami permasalahan nyata dan merangsang keterlibatan aktif dalam proses pembelajaran. Temuan ini mengindikasikan bahwa pelatihan pengembangan media 3D efektif dalam meningkatkan kesiapan guru menerapkan pembelajaran berbasis masalah di kelas IPA
Perbandingan Model Pembelajaran Case Method Dan Diskusi Dengan Menggunakan Hipotesis Uji Mann Whitney Dan Kolmogorov Smirnov
Full text linkPendidikan merupakan sebuah proses pembelajaran bagi setiap individu. Dalam sistem pembelajaran, ada banyak cara atau model-model yang dapat diterapkan dalam perkuliahan agar suasana belajar mengajar terasa lebih menyenangkan yaitu model pembelajaran diskusi, kolaboratif, case method dan sebagainya. Pada penelitian ini digunakan model pembelajaran diskusi dan case method untuk mengetahui apakah ada perbedaan antara kedua model tersebut, maka digunakan uji nonparametrik dua sampel independen. Uji yang digunakan untuk membandingkan perbedaan antara dua sampel yang independen yaitu Uji Mann Whitney dan Uji Kolmogorov Smirnov. Alasan digunakan metode tersebut, karena metode ini dapat menilai apakah dua sampel independen yang diamati terdapat perbedaan atau tidak secara signifikan. Tujuan penelitian ini adalah untuk menguji apakah ada perbedaan nilai yang signifikan antara kedua model pembelajaran tersebut dan melihat metode manakah yang terbaik dengan melihat Mean Square Error (MSE) terkecil. Hasil penelitian menyimpulkan bahwa perhitungan pada pengujian hipotesis Uji Mann Whitney dan Uji Kolmogorov smirnov terhadap model pembelajaran case method dan diskusi yaitu terima H0 artinya tidak ada perbedaan bermakna antara model pembelajaran case method dan diskusi. Berdasarkan hasil statistik Uji Kolmogov Smirnov ternyata lebih baik dibandingkan dengan Uji Mann Whitney. Karena Uji Kolmogov Smirnov memiliki nilai Error atau MSE lebih kecil dibandingkan dengan Uji Mann Whitney
Analisis Analisis Kesalahan Mahasiswa dalam Menjawab Soal Barisan Cauchy berdasarkan Teori Newman
No full textThis study aims to identify the types of reading errors made by students in solving Cauchy sequence problems in a Real Analysis course. The research employed a descriptive qualitative method using Newman's theory as the analytical framework. The subjects were Mathematics Education students at Universitas Negeri Medan who had completed the course. The results revealed that students made errors in reading, understanding the problems, and performing calculation procedures, particularly in grasping the fundamental concept of Cauchy sequences. These findings highlight the need to strengthen conceptual understanding through more targeted learning strategies and the application of Newman’s theory as a tool for diagnosing errors.Penelitian ini bertujuan untuk mengidentifikasi jenis kesalahan membaca yang dilakukan mahasiswa dalam menyelesaikan soal barisan Cauchy pada mata kuliah Analisis Real. Metode yang digunakan adalah deskriptif kualitatif dengan teori Newman sebagai acuan. Subjek penelitian adalah mahasiswa Pendidikan Matematika Universitas Negeri Medan yang telah menempuh mata kuliah tersebut. Hasil menunjukkan bahwa mahasiswa mengalami kesalahan pada tahap membaca, memahami masalah, serta melakukan prosedur perhitungan, terutama dalam konsep dasar barisan Cauchy. Temuan ini menunjukkan perlunya penguatan pemahaman konsep melalui strategi pembelajaran yang lebih terarah dan penggunaan teori Newman sebagai alat diagnosis kesalaha
Model Pembelajaran Two Stay Two Stray (TSTS) Terhadap Kemampuan Komunikasi Matematis
No full textMathematical communication skill (KKM) is the ability of students to communicate ideas in writing to solve problems. However, students still have not been able to solve the problem and do not write conclusions. So it is necessary to apply the Two Stay Two Stray (TSTS) learning model with a realistic approach to student KKM. The TSTS learning model can give students freedom to understand the material, develop mathematical ideas, write, and convey the results of their thinking to other students. This research was an experimental research with a posttest-only nonequivalent groups design. Sampling was conducted using the purposive sampling technique based on consideration of the lowest class average score, and a population equality test was performed using a one-way ANOVA test. Data collection was carried out using a posttest containing 4 questions and analyzed using descriptive statistics and a one-way ANOVA test. The results showed that the value of Fcount: 6.629159 > Ftable: 4.003983, so that the learning model affects math communication skill. Furthermore, a double comparison test was conducted with the Scheffe method and obtained that Fcount: 6.5863 > Ftable: 4.003983, which shows a significant difference between the average of the TSTS learning model with a realistic approach and the conventional learning model. So, it is concluded that the TSTS learning model with a realist approach is the best.Kemampuan komunikasi matematis (KKM) merupakan kemampuan siswa dalam mengkomunikasikan ide-ide secara tertulis untuk memecahkan masalah. Akan tetapi siswa masih belum mampu menyelesaikan soal berbentuk masalah, dan tidak menuliskan kesimpulan. Sehingga diperlukan penerapan model pembelajaran Two Stay Two Stray (TSTS) dengan pendekatan realistic terhadap KKM siswa. Model pembelajaran TSTS dapat memberikan siswa kebebasan untuk memahami materi, mengembangkan ide matematika, menuliskan dan menyampaikan hasil pemikirannya kepada siswa lainnya. Penelitian ini merupakan penelitian eksperimen dengan desain posttest-only nonequivalent groups. Pengambilan sampel dilakukan dengan menggunakan teknik purposive sampling berdasarkan pertimbangan nilai rata-rata kelas terendah, selanjutnya dilakukan uji kesetaraan populasi dengan menggunakan uji ANOVA satu arah. Pengumpulan data dilakukan dengan menggunakan posttest yang berisi 4 soal dan dianalisis menggunakan statistik deskriptif dan uji ANOVA satu arah. Hasil penelitian menunjukkan bahwa nilai Fhitung : 6,629159 > Ftabel : 4.003983 sehingga model pembelajaran berpengaruh terhadap kemampuan komunikasi matematika. Selanjutnya dilakukan uji komparasi ganda dengan metode Scheffe dan diperoleh bahwa Fhitung : 6,5863 > Ftabel : 4,003983 yang menujukkan terdapat perbedaan yang signifikan antara rata-rata model pembelajaran TSTS dengan model pembelajaran konvensional. Sehingga, disimpulkan bahwa model pembelajaran TSTS dengan pendekatan realistic lebih berpengaruh daripada model pembelajaran konvensional terhadap kemampuan komunikasi matematika