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All Journal International Journal of Hydrological and Environmental for Sustainability Islamic Journal of Integrated Science Education
Omanwar, Shreeniwas
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Environmental Science Mathematics Physics Social Sciences Other

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Enhancing Third Grade Students’ Learning Outcomes in Science and Social Studies Through Game-Based Learning: A Classroom Action Research Sari, Meirita; Yunilarosi, Elvida Sari; Ula, Siti Mubarokatul; Panse, Vishal R.; Shukla, Alok; Omanwar, Shreeniwas
Islamic Journal of Integrated Science Education (IJISE) Vol. 4 No. 3 (2025): November
Publisher : Program Studi Tadris IPA, Fakultas Tarbiyah (IAIN) Kediri, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30762/ijise.v4i3.6655

Abstract

The low learning outcomes of third-grade students at SDN 2 Rambang in Science learning. Therefore, innovation through game-based learning is needed. This research aims to improve the learning outcomes of third-grade students at SDN 2 Rambang on the topic of the life cycle of living things in Science learning using the game-based learning method. The subjects of this research were 19 third-grade students at SDN 2 Rambang. The method used in this research was Classroom Action Research which was carried out in 2 cycles. The instruments used included observation sheets, learning outcome tests, and documentation. The results of the research showed that the application of the game-based learning method could improve student learning outcomes. In the pre-cycle, only 6 out of 19 students (31.6%) achieved scores above the Minimum Completeness Criteria. In the first cycle, this increased to 12 students (63.2%), and in the second cycle, it further increased to 19 students 100%). In addition to the increase in learning outcome scores, students also showed increased motivation, activeness, and understanding of the material. Thus, it can be concluded that the game-based learning method is effective in improving student learning outcomes in Science learning, especially on the topic of the life cycle of living things.
Integrated Flood Risk and Embankment Stability Modeling in the Comoro River, Timor-Leste using HEC-RAS and GIS Minaryo, Kris; Tjendani, Hanie Teki; Wulandari, Esti; Junaidi, Rahmad; Andiyan, Andiyan; Omanwar, Shreeniwas
International Journal of Hydrological and Environmental for Sustainability Vol. 4 No. 3 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i3.961

Abstract

Dili, the capital city of Timor-Leste, is increasingly vulnerable to flooding due to its geomorphological characteristics and rapid urban expansion. The Comoro River, the largest of several rivers traversing the city, has experienced multiple significant flood events in recent years most notably in March 2020, April 2021, and February 2022 resulting in severe damage to infrastructure and disruption to local communities. Urban development has led to watershed degradation, sediment accumulation, reduced channel capacity, and embankment overtopping, exacerbating flood risks in densely populated areas. This study aims to assess flood risk and evaluate embankment resilience using an integrated modeling approach. Design flood discharge was estimated using the Log Pearson Type III distribution and the Nakayasu synthetic unit hydrograph, with validation through Chi-Square and Kolmogorov-Smirnov goodness-of-fit tests. Hydraulic simulations were conducted using HEC-RAS 6.1.0 programme, while flood inundation mapping was performed with ArcGIS 10.3 to identify critical flood-prone zones and guide mitigation strategies. Results indicate a peak discharge of 192.141 m³/s for a 25-year return period flood. Mitigation measures proposed include embankment construction and river normalization at vulnerable cross-sections. HEC-RAS simulations demonstrate that these interventions significantly reduce flood inundation. The embankment slope stability factor was calculated at 7.55, indicating a high level of structural safety. The estimated cost for implementing these flood control measures is USD 571,366.87. This study provides a replicable framework for flood hazard modeling and infrastructure planning in urban river systems, contributing to climate-resilient development and evidence-based decision-making in Southeast Asian contexts.
Co-Authors Andiyan Esti Wulandari Hanie Teki Tjendani, Hanie Teki Minaryo, Kris Panse, Vishal R. Rahmad Junaidi, Rahmad Sari, Meirita Shukla, Alok Ula, Siti Mubarokatul Yunilarosi, Elvida Sari