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Development of Science E-Module Based on Case Method to Im-prove Students’ Problem Solving Skills Aribowo, Litasari Aldila; Kholil, Putri Alifa; Wulandari, Tiara Dwi
Unnes Science Education Journal Vol. 14 No. 1 (2025): April 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/usej.v14i1.25433

Abstract

Life in the 21st century is full of challenges and problems that need to be solved in order to survive in global competition. This condition makes science education in the 21st century must be able to produce graduates who are not only good at knowledge, but also have critical thinking skills, creativity, collaboration, communication, not to mention problem solving. The purpose of this study was to analyze the effectiveness of e-modules based on case methods to improve the problem solving skills of prospective science teachers. This research uses RnD with the ADDIE model. Then e-module based on case methods that has been developed is implemented in basic science learning with a quasi-experimental design Nonequivalent control group design. Data analysis was conducted with the validity, characteristics, and effectiveness of e-modules based on case methods. The results showed that the e-module based on case methods was valid for use with a value of 0.98. The implementation of e-modules showed an increase in pretest and posttest results with an experimental class n-gain score of 0.85 with high criteria, while the control class n-gain score was 0.68 with moderate criteria. The conclusion of this study is that the e-module based on case methods is effectively used to improve the problem solving skills of prospective teacher students in Basic Science courses.
PERUBAHAN TATA GUNA LAHAN TERHADAP DAYA DUKUNG FUNGSI LINDUNG DAERAH ALIRAN SUNGAI (DAS) BABON DI SEMARANG DAN SEKITARNYA Nugraha, Bachtiar Rama Ardhi; Suryaningrum, Irnanda; Amanda, Putri; Agfanisa, Rahma; Ardeny, Anisa Nur Faizah; Pratama, Liona Surya; Haris, Amnan; Fariz, Trida Ridho; Jabbar, Abdul; Kholil, Putri Alifa; Faizah, Nur
Jurnal Riptek Vol 19, No 1 (2025)
Publisher : Badan Riset dan Inovasi Daerah Kota Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35475/riptek.v19i1.305

Abstract

This study aims to analyze the impact of land use changes on the carrying capacity of the protective function of the Babon Watershed (DAS Babon) and its relation to flood events in the area. The research employs a quantitative approach using satellite imagery data from 2015 and 2023, processed with Geographic Information Systems (GIS) to map land use changes and the carrying capacity of the watershed's protective function. The results indicate significant land use changes, particularly the conversion of agricultural land into residential and industrial areas, which has reduced the extent of water infiltration zones and natural vegetation. The decline in the carrying capacity of the protective function of the Babon Watershed has increased flood risks, especially in downstream areas exposed to high surface runoff. The analysis of the protective function's carrying capacity (DDL) reveals a degradation in protective quality in several districts, with lower DDL values observed in 2023. The use of impervious materials such as concrete and asphalt exacerbates drainage quality and worsens flood risks.
Analysis of Carbon Footprint and Water Footprint in Laundry MSMEs Business Using Life Cycle Assessment Kholil, Putri Alifa; Jabbar, Abdul; Lantip, Dhia Sasmita; Darpawanto, Nana Jedy; Aribowo, Litasari Aldila
Journal of Environmental and Science Education Vol. 5 No. 1 (2025): Journal of Environmental and Science Education : April 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jese.v5i1.24807

Abstract

Laundry MSMEs are resource-intensive, consuming significant electricity and water while discharging wastewater with high concentrations of detergent residues. Accordingly, assessing their environmental impacts is essential to support sustainable practices in the laundry sector. This study aims to quantify the carbon footprint and water footprint of a laundry MSME, identify the hotspot, and propose mitigation strategies. A gate-to-gate Life Cycle Assessment (LCA) was conducted using SimaPro software. Impact assessment applied IPCC 2021 GWP100 for carbon footprint and AWARE methodology for water footprint. The result shows that laundering 1 ton of clothes generates 5,072 kg CO₂-eq and 687 m³ of water use. The washing process is identified as the main hotspot, contributing 3,470 kg CO₂-eq (68% of total emissions) and 654 m³ (95% of total water use). These findings highlight the need for targeted interventions at the washing stage to reduce environmental impacts and enhance resource efficiency in the laundry sector.
ANALISIS PERUBAHAN LAHAN DI SEKITAR MATA AIR KABUPATEN TEGAL BERBASIS SISTEM INFORMASI GEOGRAFIS Pramesti, Angelina Cahya; Yuniar, Azka Dwi; Utami, Rinanda Putri; Christyadi, Louis Anasthasya; Dipanegara, Ayatulloh Repa; Fariz, Trida Ridho; Jabbar, Abdul; Kholil, Putri Alifa; Haris, Amnan
Pranatacara Bhumandala: Jurnal Riset Planologi Vol. 6 No. 1 (2025): Pranatacara Bhumandala: Jurnal Riset Planologi
Publisher : UNHI PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32795/sn7ar398

Abstract

Kecamatan Bojong, Kabupaten Tegal merupakan wilayah yang terdapat kawasan lindung berdasarkan Rencana Tata Ruang Wilayah (RTRW). Perubahan penggunaan lahan di wilayah ini terjadi akibat pertumbuhan penduduk dan meningkatnya aktivitas ekonomi. Hal ini dapat memberikan ancaman lingkungan termasuk di sekitar mata air. Kajian ini bertujuan untuk menganalisis perubahan tutupan lahan di Kabupaten Tegal dan sekitar 13 mata air utama di Kecamatan Bojong menggunakan metode Sistem Informasi Geografis (SIG). Data berupa citra satelit tahun 2015 dan 2024 diinterpretasikan secara visual untuk menghasilkan peta perubahan tutupan lahan. Hasil penelitian menunjukkan bahwa terjadi perubahan penggunaan lahan dari tahun 2015–2024 dengan peningkatan lahan permukiman sekitar 58,58 ha, penurunan lahan hutan rakyat sekitar 9,33 ha, penurunan lahan kebun campuran sekitar 0,65 ha, dan penurunan lahan sawah sekitar 43,19 ha. Terdapat 13 mata air di lokasi penelitian. Namun, pesatnya perubahan lahan di Kecamatan Bojong membawa tantangan. Area sempadan mata air yang semestinya menjadi zona lindung kini beralih fungsi seperti pada Mata Air Pekewon dan Banyumudal. Hal ini mengancam kelestarian mata air dengan mengurangi area resapan dan meningkatkan pencemaran yang berdampak pada kualitas air serta kesehatan masyarakat yang bergantung padanya. yang menghadapi tekanan lingkungan signifikan akibat perubahan ini, sehingga diperlukan strategi konservasi yang tepat untuk menjaga keberlanjutan sumber daya air dan fungsi ekosistem.
Exploring Biochar Briquettes from Biomass Waste for Sustainable Energy Heriyanti, Andhina Putri; Bakri, Sitty Nur Syafa; Jabbar, Abdul; Kholil, Putri Alifa; Amelia, Rizki Nor; Savitri, Erna Noor; Rifaatunnisa; Siti Herlina Dewi; Habil Sultan
Advance Sustainable Science Engineering and Technology Vol. 7 No. 3 (2025): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i3.1311

Abstract

The increasing demand for renewable energy necessitates sustainable alternatives such as biochar briquettes derived from agricultural waste. This study aims to optimize the production process and evaluate the physical, mechanical, and combustion properties of biochar briquettes made from corn residues, rice husks, and coconut shells. The methodology includes biomass carbonization, binder ratio optimization, and systematic testing of key quality parameters such as moisture content, density, ash content, and calorific value. Results indicate that an optimal biomass-to-binder ratio yields a high calorific value (7,192 kcal/kg) and low ash content (3.57%), enhancing combustion efficiency. Maintaining moisture content below 10% enhances ignition and prolongs burning time. These findings highlight biochar briquettes' role in carbon sequestration, biomass conversion, and sustainable waste management, supporting the circular economy and reducing environmental pollution. Biochar briquettes offer a clean, accessible energy solution, contributing to global energy security and climate change mitigation.
Analisis Perubahan Penggunaan Lahan Pertanian di Kota Pekalongan Tahun 2015-2023 Hamdani, Adib Afriza; Awati, Desiana Fitri; Wijanaputri, Kania Okta; Salma, Mila Rangga Lailatus; Putri, Ade Anggun Wana; Kholil, Putri Alifa; Jabbar, Abdul; Haris, Amnan
Proceeding Seminar Nasional IPA 2025
Publisher : LPPM UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini menganalisis perubahan penggunaan lahan pertanian di Kota Pekalongan selama periode 2015–2023 serta mengevaluasi dampaknya terhadap daya dukung pertanian. Studi ini dilatarbelakangi oleh tekanan urbanisasi, pembangunan infrastruktur, dan alih fungsi lahan yang signifikan. Data geospasial dari citra Landsat diolah menggunakan Sistem Informasi Geografis (SIG) untuk mengidentifikasi pola perubahan lahan, yang dikategorikan menjadi lahan non-pertanian, pertanian, dan kawasan sungai. Hasil penelitian menunjukkan bahwa luas lahan non-pertanian meningkat sebesar 14,41% dari 2.632,94 hektar menjadi 3.012,00 hektar, sementara lahan pertanian menurun sebesar 20,25% dari 1.967,46 hektar menjadi 1.568,49 hektar. Perubahan ini dipengaruhi oleh pertumbuhan penduduk, banjir rob, dan perkembangan sektor industri. Penelitian ini diharapkan dapat menjadi dasar bagi perencanaan tata ruang yang berkelanjutan untuk melindungi lahan pertanian produktif dan menjaga keseimbangan ekosistem di Kota Pekalongan.
Empowering a Rural Highland Community in Getasan District through Black Soldier Fly-Based Organic Waste Management for a Circular Economy Transition Heriyanti, Andhina Putri; Febriyanto, Hendra; Mustikaningtyas, Dewi; Kholil, Putri Alifa; Fariz, Trida Ridho; Salsabilla, Nur Hayati Afrilda; Romadhon, Vhaviriele Abel; Haris, Amnan
Unram Journal of Community Service Vol. 6 No. 3 (2025): September
Publisher : Pascasarjana Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ujcs.v6i3.1158

Abstract

Waste management in Indonesia is still dominated by open burning and landfilling, causing environmental and health problems. In Jetak Village, Getasan District, Semarang Regency, located in the rural highlands of Mount Merbabu, organic waste dominates household waste streams. Although a TPS3R facility has existed since 2022, its operation remains suboptimal due to low community participation and odor issues. This condition highlights the urgent need for innovative, community-based solutions. Black Soldier Fly (BSF, Hermetia illucens) farming offers an effective alternative, capable of reducing organic waste by 50–60% while producing valuable by-products. This community service program targeted village officials, farmer groups, women’s groups, youth, and TPS3R managers. Activities included awareness sessions on circular economy, training in BSF cultivation, field demonstrations using appropriate technology, digital marketing workshops, and operational assistance at TPS3R. Impact was assessed through participant questionnaires and scenario modeling of household-level BSF adoption based on waste generation data from SIPSN (2025) and BPS (2025). Twenty-five participants engaged actively throughout the program. Evaluation showed 100% agreement that BSF is effective for organic waste management, with 89% willing to adopt it at home. Products such as fresh and dried larvae and frass were successfully introduced, with estimated market value up to IDR 52,000/kg. Scenario analysis indicated potential reductions of 89–268 tons of organic waste annually and mitigation of 2.6–7.8 tons CO₂e, depending on adoption rates. The program proved that BSF technology is feasible, socially acceptable with proper education, and economically promising. It strengthened local waste management capacity, supported income generation, and contributed to circular economy transition while aligning with SDG 12 and Indonesia’s low-carbon development goals.
The Transformation of Renewable Energy in Indonesia and Thailand: Energy Diversification as an Effort to Achieve the 2030 SDGs Heriyanti, Andhina Putri; Listiaji, Prasetyo; Fibriana, Fidia; Widiyatmoko, Arif; Mustikaningtyas, Dewi; Dewi, Novi Ratna; Wiyanto, Wiyanto; Kholil, Putri Alifa; Purwadi, Cintiya Egi; Wicaksono, Maulana Malik
Jurnal Abdimas Vol. 28 No. 2 (2024): December 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/3p08n676

Abstract

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. 
Building Environmental Literacy: A Green Literacy Bootcamp Model for an Eco-School within a Coastal Community Amelia, Rizki Nor; Ngabekti, Sri; Kholil, Putri Alifa; Jabbar, Abdul; Listiaji, Prasetyo
Jurnal Pemberdayaan Masyarakat Vol 4, No 4 (2025): Article in Press
Publisher : Yayasan Keluarga Guru Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46843/jpm.v4i4.577

Abstract

Coastal schools are highly vulnerable to the impacts of climate change, including tidal flooding, erosion, and seawater intrusion, which disrupt educational processes and compromise community resilience. Strengthening environmental literacy within the eco-school framework is therefore essential to develop adaptive knowledge, critical thinking, and sustainable behavior among students. This community service project implemented a Green Literacy Bootcamp at SMP Negeri 25 Semarang, involving 45 students identified as prospective Green Warriors. The program comprised three phases: a two-day intensive training, a three-month follow-up, and a final reflection. Activities included communication workshops, creative campaigns, eco-project simulations, and student-led projects on waste management, urban farming, and tidal flood mitigation. The program was evaluated using a pre-post environmental literacy test and structural model analysis, complemented by a satisfaction survey. Results showed a substantial improvement in environmental literacy, with the largest gains observed in environmental hope and cognitive skills. Students also reported high satisfaction with the learning experience. This study contributes to the field of environmental education by offering a validated and replicable model for strengthening multidimensional environmental literacy and supporting eco-school development in coastal communities facing climate change challenges.