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All Journal Primary: Jurnal Pendidikan Guru Sekolah Dasar Curve Elasticity: Jurnal Pendidikan Ekonomi
Melinda Fitria
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Humanities Economics, Econometrics & Finance Education Other

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PENINGKATAN PRESTASI MATEMATIKA SISWA SEKOLAH DASAR DENGAN MENGGUNAKAN KOMBINASI MODEL PEMBELAJARAN PBL, SR, DAN QOD Herti Prastitasari; Melinda Fitria; Jumadi; Sunarno; Muhsinah Annisa; Yogi Prihandoko6
Primary: Jurnal Pendidikan Guru Sekolah Dasar Vol. 11 No. 6 (2022): December
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/10.33578/jpfkip.v11i6.9250

Abstract

This article discusses students’ low mathematics achievement. It is indicated by the lack of students learning activities. This research is conducted to determine how the implementation of teacher and student activities in the teaching and learning processes through the PBL, SR, and QOD models has an impact on the improvement of students’ mathematics learning achievements, especially on cube and block subject matters. The research used is classroom action research, which is carried out in four meetings. The subjects in this research involve the fifth-grade students of SD Muhammadiyah 6 Banjarmasin. The instrument used is the teacher and students’ observation sheets in the teaching and learning processes and students’ learning outcomes based on the questions given at the end of the learning activity. The results of this research indicate that teacher activities are carried out based on the procedure with very good categories and students’ activities are categorized as very active and most students are very active in class. In addition, students’ learning outcomes individually and in groups that have achieved the minimum score are 70 > 82%. The result also indicates that by applying PBL, SR, and QOD learning models in the mathematical content of cube and block subject matters can be applied properly based on the procedures to increase students’ learning activity and mathematic achievement. This research is expected to be a reference to increase students’ achievement, especially in mathematics learning.
ESTIMASI EMISI KARBON DARI KONSUMSI LISTRIK DAN SAMPAH: STUDI KASUS PASAR BULU Yeremia Petra Sigalingging; Tegar Hermawan; Talenta Vena Insani; Penesta Tia Tira Sinulingga; Melinda Fitria; Clara Febina Tarigan; Yasmien Mumtaz Azzahra; Indah Susilowati
Curve Elasticity: Jurnal Pendidikan Ekonomi Vol 7 No 1 (2026): Curve Elasticity: Jurnal Pendidikan Ekonomi
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/jpe.v7i1.4308

Abstract

Traditional markets play an important role in urban economic systems while simultaneously contributing to greenhouse gas emissions through electricity consumption and solid waste generation. Pasar Bulu, a major traditional market in Semarang City with high trading intensity and near-continuous daily operations, represents a significant source of urban carbon emissions. This study aims to quantify carbon emissions originating from electricity consumption and solid waste generation at Pasar Bulu and to analyze the dominant sources contributing to the market’s overall carbon footprint. A mixed-methods approach was employed by integrating quantitative measurements and qualitative analysis. Quantitative data were obtained from electricity consumption records of market facilities and traders’ stalls, as well as annual waste volume and composition data. Qualitative data were collected through field observations and in-depth interviews with 36 respondents representing academics, business actors, government officials, and community groups (ABGC). Carbon emission estimates were calculated using the IPCC Guidelines for National Greenhouse Gas Inventories (2006), applying the energy sector method for indirect emissions from electricity consumption and the First Order Decay (FOD) method for solid waste emissions. The results show that electricity consumption generated 15,522.83 kg CO₂, primarily originating from centralized market installations and stalls using intensive lighting and cooling equipment. Meanwhile, solid waste management produced 1,089.66 tons CO₂ per year, dominated by food waste emissions amounting to 958.83 kg CO₂, driven by methane formation during organic waste decomposition. These findings indicate that although electricity consumption constitutes the largest source of carbon emissions in absolute terms, food waste remains a critical emission component within the waste sector. Therefore, carbon mitigation strategies in Pasar Bulu should prioritize electricity efficiency improvements alongside source-based organic waste management to support sustainable and low-carbon traditional market operations
Co-Authors Clara Febina Tarigan Herti Prastitasari Indah Susilowati Jumadi Muhsinah Annisa Penesta Tia Tira Sinulingga SUNARNO Talenta Vena Insani Tegar Hermawan Yasmien Mumtaz Azzahra Yeremia Petra Sigalingging Yogi Prihandoko6