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All Journal Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Rengganis Jurnal Pengabdian Masyarakat
Yogi Septian Hadi
Universitas Mataram
Agriculture, Biological Sciences & Forestry Chemistry Economics, Econometrics & Finance Education Mathematics Physics Social Sciences

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Sosialisasi dan Pelatihan Pengolahan Sampah Organik Rumah Tangga di Desa Batu Jangkih Yek Zen Mubarok; Doni Anamal; Nurul Hilmi Muliana; Mirza Ainul Islam; Rostihanji Rostihanji; Karina Ayu Septiana; Ninda Luqya Nakadira; Baiq Yuliana; Mia Nurkhofifah; Yogi Septian Hadi; Husmiati Husmiati; Muhammad Hilmi; Saipul Hamdi
Rengganis Jurnal Pengabdian Masyarakat Vol. 2 No. 1 (2022): Mei 2022
Publisher : Pendidikan Matematika, FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/rengganis.v2i1.153

Abstract

Problems caused by indiscriminate and improperly disposed waste can cause big problems for the environment and society. This article specifically investigates waste in Batu Jangkih village, where there are still people littering and lack of knowledge about how to use waste properly. One solution to the waste problem in Batu Jangkih Village is to use household organic waste to be processed into compost. This activity is a service to the community in Batu Jangkih village. The purpose of this service activity is to provide information and additional knowledge to the community through socialization and training in order to increase public awareness of the environment and to utilize and process organic waste properly. The method of implementing service activities is carried out in 3 stages, namely identification of problems related to waste, preparation for implementation of activities, and implementation of activities. The result of this activity is the addition of knowledge and skills of the people of Batu Jangkih Village in the utilization and processing of household organic waste so that it can reduce waste that is littered outside the house and into illegal landfills that have the potential to pollute the environment.
Pengaruh Model Pembelajaran Project Based Learning (PjBL) terhadap Kemampuan Pemecahan Masalah pada Materi Pokok Bangun Datar Siswa Kelas IV SDN 03 Paokmotong Tahun Ajaran 2025/2026 Yogi Septian Hadi; Lalu Sirajul Hadi; Baiq Yuni Wahyuningsih
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 3 (2026): August (Inpres)
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i3.2687

Abstract

This study was motivated by the low mathematical problem-solving ability of fourth-grade students on plane geometry topics, particularly the perimeter and area of squares, rectangles, and triangles. This study aimed to determine the effect of the Project Based Learning (PjBL) model on the mathematical problem-solving ability of fourth-grade students at SDN 03 Paokmotong. This research employed a quantitative approach using a quasi-experimental method with a posttest-only control group design. The research sample consisted of 50 fourth-grade students from SDN 03 Paokmotong. Data were collected through a mathematical problem-solving test and classroom implementation observation. The research instruments included a mathematical problem-solving test and an observation sheet for the implementation of the learning process. Data were analyzed using descriptive statistics to determine the mean and standard deviation, the Kolmogorov–Smirnov normality test, the Fisher homogeneity test, and hypothesis testing using the Independent Samples t-test. The results showed that the mean score of the experimental class was 78.68, which was higher than that of the control class, which was 62.56. The hypothesis test results indicated that the calculated t-value (tcount = 5.19) was greater than the critical t-value (ttable = 2.01) at the 0.05 significance level; therefore, H₀ was rejected and H₁ was accepted. It can be concluded that the Project Based Learning (PjBL) model has a significant effect on the mathematical problem-solving ability of fourth-grade students at SDN 03 Paokmotong in learning plane geometry.
Co-Authors Baiq Yuliana Baiq Yuni Wahyuningsih Doni Anamal Husmiati Husmiati Karina Ayu Septiana Lalu Sirajul Hadi Mia Nurkhofifah Mirza Ainul Islam Muhammad Hilmi Ninda Luqya Nakadira Nurul Hilmi Muliana Rostihanji Rostihanji Saipul Hamdi Yek Zen Mubarok