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All Journal Jurnal Fibonaci: Jurnal Pendidikan Matematika Bakti Sekawan : Jurnal Pengabdian Masyarakat
Harahap, Sri Rahma Yani
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Religion Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Health Professions Mathematics Social Sciences Other

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Analisis Kesulitan Mahasiswa dalam Pembuktian Matematis pada Mata Kuliah Teori Bilangan Ammamiarihta, Ammamiarihta; Harahap, Sri Rahma Yani
Jurnal Fibonaci: Jurnal Pendidikan Matematika Vol. 6 No. 1 (2025): Jurnal Fibonaci: Jurnal Pendidikan Matematika
Publisher : Prodi Pendidikan Matematika FMIPA Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jfi.v6i1.66911

Abstract

Penelitian ini merupakan penelitian kualitatif dengan metode deskriptif. Tujuan penelitian ini untuk menganalisis kesulitan mahasiswa dalam pembuktian matematis pada mata kuliah Teori Bilangan. Subjek penelitian ini terdiri dari 3 orang mahasiswa yang mewakili masing-masing kategori tingkat kemampuan matematikanya. Pengumpulan data penelitian dilakukan dengan melakukan tes, wawancara dan observasi terhadap subjek penelitian. Tahapan analisis Miles daan Huberman yang dilakukan melalui tahapan reduksi data, penyajian data dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa: (1) Kesulitan mahasiswa berkemampuan tinggi adalah kesulitan dalam menyusun pembuktian dalam urutan yang sistematis; (2) Kesulitan mahasiswa berkemampuan sedang adalah kurangnya pemahaman dalam menentukan metode yang tepat untuk pembuktian, keterbatasan dalam menafsirkan pernyataan, kurang dalam memahami konsep pembuktian dan tidak mampu menentukan langkah yang relevan dengan kesimpulan serta kecemasan dan persepsi negatif terhadap pembuktian matematis; (3) Kesulitan mahasiswa berkemampuan rendah  yaitu tidak memiliki pemahaman tentang pembuktian matematis, tidak memahami perbedaan antara defenisi, sifat, ataupun teorema dan tidak dapat mengkonstruksi proses pembuktian matematis, serta persepsi negatif dan daya juang yang rendah juga menyulitkan mahasiswa melakukan pembuktian matematis.
Pengelolahan Sampah Rumah Tangga Menuju Lingkungan Berkelanjutan Melalui Produksi Pupuk Eco Enzyme Di Desa Nogo Rejo, Kecamatan Galang Kabupaten Deli Serdang Nasution, Ade Nayla; Amidar, Suci Wulandari; Sinaga, Siti Aisyah; Ramadhani, Ira; Pulungan, Nur Aisyah; Harahap, Sri Rahma Yani
Bakti Sekawan : Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2026): Juni
Publisher : Puslitbang Sekawan Institute Nusa Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35746/bakwan.v6i1.904

Abstract

Household waste consists of various types, one of which is organic waste that easily decomposes, such as vegetable residues, fruits, and kitchen waste. If not properly managed, organic waste can cause unpleasant odors, environmental pollution, and gas emissions that negatively affect the atmosphere. The problem faced by community partners is the limited knowledge and skills in sorting and managing organic waste, resulting in suboptimal utilization of organic waste. To address this issue, a community service activity was conducted to improve residents’ knowledge and skills in processing organic waste into value-added products. The activity applied a Participatory Action Research (PAR) approach by providing education on waste classification, explaining the benefits of environmentally friendly fermented liquid (eco enzyme), and conducting hands-on practice of the production process. The materials used included fruit peels, vegetable residues, brown sugar, and water fermented for approximately three months. Before the activity, most residents were unfamiliar with eco enzyme and productive organic waste management. After the activity, the results showed an improvement in residents’ understanding, as well as increased interest in utilizing the fermented liquid as liquid fertilizer, natural cleaner, and potential business opportunity. This program is expected to become a concrete step toward sustainable, environmentally friendly, and community-based waste management with economic value.
Co-Authors Amidar, Suci Wulandari Ammamiarihta Ammamiarihta Nasution, Ade Nayla Pulungan, Nur Aisyah Ramadhani, Ira Sinaga, Siti Aisyah