Development of problem-based learning-based student worksheet to improve mathematical problem solving ability in rows and rows material

Problem Based Learning is one form of effort to reduce problems in the process of learning mathematics. The model used in the teaching and learning process is in accordance with the demands of mathematics learning and is centered on students. This research has the main objective of developing and designing problem-based LKPD with the aim of improving students' ability to solve mathematical problems on the material of rows and series. The use of the research and development (R&D) model was chosen by researchers in this study. The type of development used in this model is 4D; as stated, 4D itself consists of four stages, namely introduction (define), planning (design), development (develop), and dissemination (disseminate). Problem Based Learning-based LKPD on the material of rows and series developed is feasible to use as teaching material in learning with the acquisition of a validation value of 92.44%, declared practical with a score of 87.44% based on students' responses to student worksheets, and declared effective with student completeness increasing with an N-Gain value of 0.72, including the high category. The increase in students' mathematics learning outcomes on the material of rows and series using Problem Based Learning-based Learner Worksheets shows that there is an increase in the mathematical problem-solving ability of students

Child grooming: Sex education as a preventive solution

Child grooming is sexual, psychological, and physical violence that has now been integrated and mutated with digital technology. Cases of child abuse are of particular concern because they have a long-term impact on children’s development. This research was carried out to provide answers regarding preventive approaches or efforts that can be taken to overcome the phenomenon of child grooming. This research was carried out qualitatively using a phenomenological approach. Data was collected through interviews, observation, and documentation. The data analysis technique was carried out using the Mills & Huberman technique. The validity of this research data applies source triangulation techniques. The results of the research show that child grooming in the form of sexual harassment is more susceptible to girls due to the way they dress less in line with their age, while for boys, it is caused by the physical deficiencies they experience. This research found that there is a need for holistic sex education through approaches to children, parents, teachers, and the social environment in which children live

School Leadership Style And Organizational Culture On Teacher Performance Of Junior High Schools In Bandar Lampung

This study aims to determine the effect of the principal's leadership style, organizational culture on the performance of teachers at Muhammadiyah 3 Junior High School in Bandar Lampung. This research uses a quantitative approach. Data collection techniques in this study using a questionnaire. The analysis used in this study is using regression analysis to test the influence between the independent variable on the dependent variable. The results of this study assessed by teachers as respondents have very good results, namely the average or mean 80, median with a score of 80, mode 80. Judging from the calculation of the regression equation with the results of a significant value of 0.000 t table 2.03693. So it means that there is a significant influence between the principal's leadership style on teacher performance. The constant B1 is positive, then the principal's leadership style has a positive effect on teacher performance by 0.395 or 39.5%

ANALYSIS: ALIGNING INFORMATION SYSTEMS AND BUSINESS PROCESSES IN THE COFFEE INDUSTRY

The coffee industry, which encompasses more than 25 million smallholder farmers worldwide, requires efficient and sustainable supply chain management. Integrating Information Systems (IS) with business processes in the coffee sector can enhance operational performance. This study utilizes a combination of literature reviews and field surveys to examine the alignment of IS in the industry. The primary findings underscore the significance of web-based and desktop solutions in facilitating stakeholder access to accurate information. Entity Relationship Diagrams (ERD) and Data Flow Diagrams (DFD) ensure a comprehensive understanding of the system's structure. The integration of IS supports sustainable practices by monitoring environmental impact and promoting fair trade. The discussion highlights the benefits of digital transformation, including improved decision-making and operational efficiency. Adopting structured approaches such as ERD and DFD facilitates effective communication among stakeholders. The integration of IS with sustainable practices reflects a commitment to environmental stewardship and ethical business conduct. Recommendations include the continued development of IS customized to meet the needs of stakeholders, fostering collaboration for innovation, enhancing digital literacy, designing sustainable IS solutions, and advocating for the adoption of IS policies. The implementation of these recommendations has the potential to drive efficiency, sustainability, and stakeholder engagement in the coffee industry

Local Culinary Online Marketing Education in Pulotondo Village Tulungagung

This PKM was carried out in an effort to provide knowledge sharing related to local culinary online marketing education in Pulotondo Village, Ngunut – Tulungagung Regency. Village existence must be taken a serious attention from the government through related policies. One of them is by empowering the economy carried out by official institutions for community economic activities, namely BUMDes . BUMDes manages village economic assets and resources in the context of empowering the village community's economy so that BUMDes directly participates in managing the economy in the village. One of the business fields that BUMDes can choose is a joint venture with the community. Therefore BUMDes business marketing education with various trainings that can increase the village's economic income. The initial step for educating the BUMDes Management Team as a contributor to strengthening the community's economy is to provide information, knowledge and skills, which must be carried out in multi-aspects, both from the community, social, cultural aspects, government policies and marketing potential for them. Growing entrepreneurial ideas, planning strategies to marketing continues to evolve into the needs of today's society. The PKM activity program is planned to be implemented has been coordinated with the BUMDes Management Team for Pulotondo Village, Kec . Ngunut – Kab . Tulungagung which will host the PKM activities by inviting all parties related to the PKM program. The presence of lecturers and students who are also entrepreneurial practitioners is expected to provide enlightenment and new knowledge which is quite meaningful for all participants

The Role Of The Production Cost Budget As An Instrument For Planning and Controlling Production Costs In the Islamic Economics Perspective

The purpose of this study is to determine the role of planning and controlling the production cost budget in terms of Islamic economics at Respiesusu Bandar Lampung. This study is qualitative and employs both primary and secondary data sources. The data was collected through interviews. The analysis technique employed was descriptive analysis, which is a means of describing or explaining facts connected to the discussion. In this case, the technique describes the analysis of Respiesusu's business planning and controlling production costs. The analysis yielded data on the production cost budget planning of Respiesusu Bandar Lampung from 2020 to 2021. The production cost budget plan was prepared according to the bottom-up theory and procedure, incorporating every line from bottom to top. However, the implementation of production costs did not meet the objective as planned, with a higher realization of 55.5% and 30.2% (unfavorable variance). In 2020, the difference in production cost deviation was greater than 5% in the uncontrolled deviation position, resulting in a suboptimal efficiency level of 155.67%. Furthermore, in 2021, production costs deviated by more than 5%, resulting in an unoptimized efficiency level of 128.56%. Jadi, anggaran biaya produksi pada UMKM Respiesusu belum berperan  secara optimal sebagai alat pengendalian biaya produksi. Thus, the production cost budget at Respiesusu MSMEs has not performed optimally in terms of cost control. Furthermore, Islamic economics advocates operating the economic system in line with Islamic economics' laws and core principles, one of which is honesty.

Mitos dan Seni: Identifikasi Budaya di Sungai Brantas dan Bengawan Solo

Studi ini berupaya mengidentifikasi mitos dan kesenian  yang berkembang di sungai brantas dan bengawan solo. Sungai ini terletak di dua provinsi, jawa timur dan jawa tengah. Sungai ini memberi pengaruh besar terhadap peradaban manusia di jawa. Penelitian ini menggunakan metode penelitian sejarah melaui empat tahap yaitu heuristik, kritik, interpretasi, historiografi. Hasil identifikasi menujukkan adanya beberapa mitos yang muncul yaitu Kisah Mpu Barada, Cerita tentang Suro dan Boyo, kisah Andhe-Andhe Lumut, Legenda Glagah Lamongan dan Ikan Lele, Cerita Onggo Inggi, Lagu Bengawan Solo (Gesang), cerita Jembatan Merah dan kesenian campursari Taman Jurug. Mitos dan kesenian yang muncul disepanjang aliran sungai Brantas dan Bengawan Solo dikarenakan ketergantungan manusia terhadap sungai tersebut. Dimulai dari masa prasejarah dengan bukti ditemukannya peninggalan prasejarah di sekitar sungai tersebut. Pada masa selanjutnya kerajaan-kerajaan klasik bercorak Hindu-Budha hingga Islam masih memamfaatkan keberadaan sungai sebagai penyambung kehidupan. Pada masa tersebut sungai digunakan dalam bidang pertanian, perdagangan, sampai militer. Pada masa yang lebih kontemporer sungai difungsikan sebagai penopang industri dan kehidupan manusia hingga saat in

Impelementation of Islamic Univercity Libraries in Digital 4.0

Islamic universities are a fragmentation of the progress of civilization that occurred during the heyday of Islam in Andalusia and Europe. The purpose of this study is to narrate the development of the Islamic world of science until the emergence of an Islamic university in the digital era. This research uses a qualitative descriptive approach. In the process of collecting data, researchers used literature review and documentation. In the era of the industrial revolution 4.0 must be able to start using strategies and also directed and measurable planning. As happened in the era of the industrial revolution 1.0, the library was still very manual in terms of services and archiving user data which began using books, borrower bags, and traditional search tools using classification numbers that were directly searched on the shelves. Furthermore, in the 2.0 era the library has started using an automation system that makes it easier to find the information needed by users, while in the 3.0 era the library has started working together to form a database until it continues until the 4.0 era the library is based on user empowerment. When viewed with the development of libraries today, especially college libraries, of course they already have policies in facing the industrial revolution era. The college library has a background as a broad reference source and has collections in printed and electronic form to support teaching, learning and research activities. One of them is by following this revolutionary era which is very beneficial for other university libraries, this is done to make it easier for the community or students to find the information they need, not only that, through this technological development, the library can also establish information and communication with other libraries widely so that it has a positive impact on increasing library accreditation

Diversity and Functional Role of The Coleoptera Order in The Nglanggeran Ancient Volcano Area, Yogyakarta

The aim of this research that was conducted in the Nglanggeran Ancient Volcano Area Yogyakarta was to determine the diversity and functional role of Coleoptera in the area. The research was conducted by survey, with observation method, in March-April 2021. Data were collected through purposive random sampling with Sorting, Yellow Pan Trap, and Hunting methods. The results of research at six stations indicated the presence of 30 individuals belonging to four families of Arthropoda order Coleoptera, namely Lilioceris lilii (Chrysomelida), Charidotella sexpunctata (Chrysomelidae), Lytta stygica (Meloidae), Anisodactylus nigerrimus (Carabaeidae), and Harmonia axyridis (Coccinellidae). Based on their functional roles, the Carabaeidae and Coccinellidae families that dominate this finding act as predators, while the Chrysomelidae and Meloidae families act as herbivores. The results of the analysis using PAST 4.07b software show that Coleoptera diversity in the area is included in the low diversity index category with a value of 0.773, a low species richness index with a value of 0.6213, and an evenly distributed abundance index with a value close to 1.ABSTRAK: Penelitian yang dilakukan di Kawasan Gunung Api Purba Nglanggeran Yogyakarta ini bertujuan untuk mengetahui keanekaragaman dan peran fungsional Coleoptera di kawasan tersebut. Penelitian dilakukan secara survei, dengan metode observasi pada bulan Maret-April 2021. Data dikumpulkan melalui purposive random sampling dengan kombinasi metode Sorting, Yellow Pan Trap, dan Hunting. Hasil penelitian di enam stasiun  menunjukkan adanya 30 individu yang termasuk ke dalam empat famili Arthropoda ordo Coleoptera yaitu Lilioceris lilii (Chrysomelida), Charidotella sexpunctata (Chrysomelidae), Lytta stygica (Meloidae), Anisodactylus nigerrimus (Carabaeidae), dan Harmonia axyridis (Coccinellidae). Berdasar peran fungsionalnya, famili Carabaeidae dan Coccinellidae yang mendominasi temuan ini berperan sebagai predator, sedangkan famili Chrysomelidae dan Meloidae berperan sebagai herbivor. Hasil analisis menggunakan software PAST 4.07b menunjukkan bahwa keanekaragaman Coleoptera di kawasan tersebut termasuk ke dalam kategori indeks keanekaragaman rendah dengan nilai 0,773, indeks kekayaan jenis rendah dengan nilai 0,6213, dan indeks kelimpahan yang merata dengan nilai mendekati 1

Karakterisasi Bioetanol dari Kulit Buah Naga Merah Berdasarkan Variasi Kadar Yeast (Saccharomyces cerevisae) dan Waktu Fermentasi

Red dragon fruit peel waste is a potential source for making bioethanol because it contains carbohydrates in the form of cellulose. The bioethanol production process involves several stages, including pretreatment, delignification, hydrolysis, fermentation and distillation. The aim of this research is to analyze variations in the amount of bread yeast (Saccharomyces cerevisae) on the amount of bioethanol produced. This research used variations in the amount of bread yeast (Yeast Saccharomyces cerevisiae) of 10%, 15%, and 20%, as well as fermentation times of 1 day (24 hours), 2 days (48 hours), and 3 days (72 hours). Qualitative testing of hydrolysis results is carried out through phytochemical tests using the Benedict and Molish tests, while quantitative testing of distillation results uses an alcohol meter to determine the level of bioethanol produced from the fermentation process. Qualitative test results showed positive results in the hydrolysis of red dragon fruit skin, indicated by color changes in the Benedict and Molish tests. Quantitative tests using an alcohol meter produced the highest bioethanol content of 6% from a bread yeast volume of 20% in day two fermentation. These results indicate that the optimum fermentation time is on the second day, where bioethanol production reaches its peak.ABSTRAK  Limbah kulit buah naga merah merupakan salah satu sumber yang potensial untuk dijadikan bioetanol karena mengandung karbohidrat dalam bentuk selulosa. Proses pembuatan bioetanol melibatkan beberapa tahap, termasuk pretreatment, delignifikasi, hidrolisis, fermentasi, dan destilasi. Tujuan dari penelitian ini adalah untuk menganalisis variasi penambahan jumlah ragi roti (Yeast Saccharomyces cerevisae) terhadap jumlah bioetanol yang dihasilkan. Penelitian ini menggunakan variasi jumlah ragi roti (Saccharomyces cerevisiae) sebanyak 10%, 15%, dan 20%, serta lama waktu fermentasi selama 1 hari (24 jam), 2 hari (48 jam), dan 3 hari (72 jam). Uji kualitatif hasil hidrolisis dilakukan melalui uji fitokimia menggunakan uji benedict dan molish, sementara uji kuantitatif hasil destilasi menggunakan alkohol meter untuk menentukan kadar bioetanol yang dihasilkan dari proses fermentasi. Hasil uji kualitatif menunjukkan adanya hasil yang positif dalam hidrolisis kulit buah naga merah, ditunjukkan oleh perubahan warna pada uji benedict dan molish. Uji kuantitatif menggunakan alkohol meter menghasilkan kadar bioetanol tertinggi sebesar 6% dari volume ragi roti sebanyak 20%, dengan lama fermentasi 2 hari. Hasil ini menunjukkan bahwa waktu fermentasi optimum adalah pada hari kedua, di mana produksi biobioetanol mencapai puncaknya