Regional languages play a crucial role in shaping cultural identity and strengthening local values among young generations. This study aims to examine the benefits of using regional languages of Banten, specifically Sundanese and Javanese Serang (Jaseng), in learning activities at elementary schools. The method used is descriptive qualitative with data collection techniques through observation, interviews with teachers, and documentation studies at several elementary schools in Banten. The results show that the use of regional languages can increase students' self-confidence, strengthen their ties to local culture, and promote the preservation of regional languages in the midst of globalization. Additionally, students become more active in communication and demonstrate intercultural tolerance attitudes. The conclusion of this study is that regional languages not only function as a means of communication but also as an educational tool in shaping character and love for one's own culture.

Many countries are transitioning from conventional energy to renewable energy sources. This transformation requires support through socialization and training activities targeting all sectors of society, including educators in schools. The Al-Hidayah Waqaf Foundation in Thailand is an educational institution with educators who have limited knowledge regarding the implementation of renewable energy as part of energy diversification efforts. Collaborative activities were conducted with the Al-Hidayah Waqaf Foundation in Thailand through socialization and training on renewable energy. The outcomes of these activities provided educators with increased knowledge, information, and perspectives on renewable energy. 

The 21st-century skills are essential component of curriculum frequently implemented in schools and universities to equip students for competition in the labor market. Integrating STEM (Science, Technology, Engineering, and Mathematics) into Project-Based Learning (PjBL) promotes active student engagement and interdisciplinary problem-solving to tackle complex issues. This article aims to provide research recommendations on how the STEM-integrated PjBL model affects students' 21st-century skills and to provide information on rarely-researched trends in this field. A Systematic Literature Review was conducted following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, utilizing Harzing's Publish or Perish software, VOSviewer, and Google Scholar databases, focusing on thirty references published between 2019 and 2023. The findings indicated that the STEM-based PjBL approach significantly enhances students' 21st-century skills, including critical thinking, creativity, collaboration, communication, conceptual understanding, and problem-solving abilities, thereby preparing them to navigate complex global challenges. Effective implementation requires interdisciplinary teacher collaboration, technology integration, and supportive learning environments. However, the analysis highlights that the integration of STEM and PjBL has not been extensively associated with collaboration and communication skills, presenting a valuable opportunity for future research in this area.

This study aimed to compare prospective pre-service teachers’ understanding of TPACK and ESD in Indonesia and Malaysia. The research method used is comparative research, which compares the understanding of TPACK and ESD of science pre-service teachers between Indonesia and Malaysia. The research sample consisted of 164 students from Indonesia and 172 from Malaysia, aged 23-25 years. The sampling technique used was simple random sampling. A test method was used to measure TPACK understanding, and a questionnaire method was used to measure ESD understanding. The data analysis method used descriptive analysis of TPACK and ESD understanding profiles and comparative tests with Mann-Whitney. The results showed that Indonesian and Malaysian pre-service teacher TPACK and ESD understanding profiles were not much different. Pre-service teachers in Indonesia have a slight advantage in overall TPACK understanding. Meanwhile, pre-service teachers in Malaysia scored slightly higher in ESD comprehension compared to Indonesia. There is a need for continuous development and professional support to strengthen pre-service teachers’ understanding of TPACK and ESD in an increasingly digitalized education context, which will ultimately support sustainable development goals more effectively.

The increasing age of marriage (PUP) is an action taken by the government to increase the age of first marriage, so as to achieve a healthy reproductive age for women of 2o years and for men of 25 years. With a total of 25.53 million incidents of child marriage throughout the world, Indonesia ranks fourth in child marriage statistics (UNICEF, 2023). One of the big problems related to violations of children's rights is child marriage. Based on data, almost 1 in 9 women get married and have children before the age of 18. Therefore, initiatives to stop child marriage are very important. According to data from the Central Statistics Agency (BPS), in 2022, 33.76% of Indonesian teenagers will marry for the first time at the age of 19 to 21 years. The implementation of the service was carried out using Booklet  media containing about maturing the age of marriage and the impact of early marriage which was carried out pre and post to determine teenagers' knowledge about PUP. The number of service targets is 60 people. Place of implementation at GBKP Church Km 8 Medan. The results obtained before being given the Booklet , the majority of teenagers had poor knowledge about PUP, 47 people (78.3%) and after being given the Booklet , the majority of teenagers had good knowledge, 57 teenagers (95.0%). During the implementation of the service, teenagers were very enthusiastic about participating and almost all teenagers understood about PUP.

Tujuan dari penelitian ini adalah untuk menyelidiki dampak degradasi terhadap ekosistem hutan mangrove dan menganalisis strategi-strategi inovatif yang digunakan untuk menjaga keberlangsungan ekosistem tersebut. Metode yang digunakan adalah metode literatur review, di mana berbagai sumber literatur ilmiah yang relevan dievaluasi secara sistematis. Hasil dari penelitian ini menunjukkan bahwa degradasi hutan mangrove memiliki konsekuensi serius terhadap ekosistem pesisir, termasuk hilangnya keanekaragaman hayati, peningkatan risiko bencana alam, dan penurunan kualitas air. Namun, berbagai strategi telah dikembangkan untuk mengatasi tantangan ini, termasuk restorasi ekosistem, pengelolaan yang berkelanjutan, partisipasi masyarakat lokal, dan penerapan teknologi modern. Pembahasan menyeluruh tentang temuan-temuan ini mengungkapkan bahwa integrasi strategi-strategi ini dapat memberikan solusi yang efektif dalam menjaga kelestarian hutan mangrove dan memperkuat ketahanan ekosistem pesisir. Implikasi praktis dari penelitian ini adalah pentingnya adopsi strategi-strategi inovatif dalam manajemen lingkungan, sementara arah penelitian masa depan mencakup peningkatan kolaborasi antarstakeholder dan pengembangan teknologi yang lebih canggih untuk mendukung konservasi hutan mangrove secara berkelanjutan.

This study evaluates the effectiveness of natural materials as antimicrobial agents in the treatment of freshwater fish diseases, with the aim of offering a safer and more sustainable alternative to synthetic chemicals and antibiotics. Using the literature review method, this study analyzed relevant current scientific articles. Results showed that extracts of betel leaf, neem leaf, cinnamon essential oil, basil essential oil, aloe vera, and propolis had significant antimicrobial activity against freshwater fish pathogens such as Flavobacterium columnare and Aeromonas hydrophila. Betel leaf extract and cinnamon essential oil showed inhibition rates of up to 85% and 82%, respectively. The advantages of using natural ingredients include environmental safety, reduced risk of antimicrobial resistance, and immunostimulating effects in fish. However, challenges such as ingredient availability, cost, and standardization still need to be addressed. This study suggests the development of natural ingredient-based products, standardization and quality testing, further research, and training for fish farmers. Collaboration between stakeholders is also important to reduce dependence on antibiotics. In conclusion, natural ingredients have great potential as effective and environmentally friendly antimicrobial agents in freshwater fish health management.
 
 

Crisis aquatic biodiversity is a critical environmental issue, triggered by human activities such as overfishing, pollution, and climate change, which have serious impacts on the stability of ecosystems and the climate change, which has serious impacts on the stability of ecosystems and the livelihoods of coastal communities. livelihoods of coastal communities. This research aims to examine community-based solutions in restoring degraded aquatic ecosystems, with a focus on the integration of sustainable aquaculture technologies and aquaponic systems. The methodology used was a comprehensive literature analysis of scientific articles, journals and relevant publications. The research findings show that sustainable fisheries management, habitat restoration, environmental education and awareness, implementation of environmentally education and environmental awareness, the application of environmentally friendly technologies, and the development of supportive policies are the main strategies for sustainable fisheries management. development of supportive policies are key strategies in improve conservation effectiveness. The implications of this research show that a community-based approach is not only effective for the conservation of aquatic biodiversity, but also provides practical guidance for policymakers and non-governmental organizations in designing and implementing community-based policy makers and non-governmental organizations in designing and implementing more holistic and effective ecosystem restoration programs that are more holistic and sustainable.                                                          
 
 

The pace of global environmental change and the intensification of human activities have put significant pressure on marine ecosystems, threatening the sustainability of many species that are important both for ecosystems and the economies of coastal communities. In this context, this study aims to evaluate the application of genetic technologies in the conservation of endangered marine species, focusing on environmental DNA (eDNA) monitoring, CRISPR genetic engineering techniques and population genetic analysis. The method used was a literature review that examined current academic sources related to genetic technologies and their implementation in conservation. Findings show that eDNA is a highly effective tool in species and habitat monitoring, and has been successful in specific cases such as Napoleon fish and green turtles in Raja Ampat. In contrast, CRISPR techniques offer the potential to improve the genetic resilience of species, despite significant regulatory and ethical challenges. The implications of this study emphasize the need for strong policy support and international collaboration to address these challenges and optimize the use of genetic technologies in more effective conservation strategies in the future.
 
 
 

implemented and evaluated the edge detection method using the Sobel Operator, which calculates the gradient of image intensity through two convoluted kernels for horizontal (Gx) and vertical directions. (Gy). The magnitudo gradient is obtained from the combination of both such directional gradients to represent the edge force on each pixel. The main steps include image pre-processing, the application of the Sobel kernel, the calculation of magnitudo gradients, and the filtering of results to extract significant edges. The results show that the Sobel Operator is effective in highlighting intensity differences that indicate the boundary of the object, although it is sensitive to noise and less accurate for fine edges. Despite its limitations, this method is simple to implement and useful as an initial step in image processing applications such as segmentation, pattern identification, and object shape analysis.