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All Journal PEMA: Jurnal Pendidikan dan Pengabdian Kepada Masyarakat Algebra Relevan : Jurnal Pendidikan Matematika
Lubis, Ekki Wahyuni
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Humanities Education Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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PROGRAM PENGABDIAN MASYARAKAT PRO LINGKUNGAN: PEMANFAATAN MINYAK GORENG BEKAS DAN PLASTIK DI TANJUNG PINGGIR Lubis, Abdullah Mubarak; Lubis, Ekki Wahyuni; Reyvani, Divya; Syahputra, Inal; Nasution, Mulkan Iskandar
Algebra : Jurnal Pendidikan, Sosial dan Sains Vol 5 No 3 (2025): ALGEBRA : JURNAL PENDIDIKAN, SOSIAL DAN SAINS
Publisher : Yayasan Amanah Nur Aman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58432/algebra.v5i3.1584

Abstract

The issue of waste is a major problem faced by the community in Tanjung Pinggir Village, Siantar Martoba District. The existence of a waste bank in the village has not been able to fully address environmental problems caused by the accumulation of plastic waste and household waste in the form of used cooking oil. This Community Service Program (KKN) was carried out with the aim of raising public awareness of the importance of protecting the environment through an ecotheology approach. The implementation methods included processing used cooking oil into aromatherapy candles for teenage girls and mothers, and processing plastic waste into paving blocks for teenage boys and fathers. The results of the activities showed that the community was receptive and actively involved in processing waste into useful products. Aromatherapy candles and paving blocks are not only a solution for waste reduction, but also have the potential to be developed into micro, small, and medium enterprises (MSMEs) for the local community. The ecotheology approach, through the understanding that humans are caliphs on earth who are obliged to preserve it, is able to provide a religious dimension to pro-environmental activities. Thus, this activity contributes to community empowerment while supporting sustainable development.
Pembelajaran Matematika Topik Pembuktian Teorema Pythagoras Berbasis Media Visual Dermawan, Dwi Ardy; Lubis, Ekki Wahyuni; Rahma, Fadhila
PEMA Vol. 5 No. 1 (2025)
Publisher : Perkumpulan Manajer Pendidikan Islam Indonesia (PERMAPENDIS) Prov. Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56832/pema.v5i1.778

Abstract

Artikel ini bertujuan untuk membuat serta mengembangkan media pembelajaran yang valid dan efektif dalam memahami pembelajaran tentang pembuktian Pythagoras. Hasil dari artikel ini adalah sebuah produk media pembelajaran berupa pembuktian teorema Pythagoras berbasis media visual. Media ini di perkenalkan kepada 25 orang siswa kelas X SMA N 1 Rantau Selatan. Uji ini menghasilkan 88% siswa mengerti akan materi ini dan menyatakan bahwa media visual ini sangat membantu. Berdasarkan hasil tersebut dapat disimpulkan bahwa produk media tersebut merupakan media yang valid, praktis, dan efektif untuk membantu siswa untuk membangun pemahaman tentang dalil Pythagoras.
SYSTEMMATIC LITERATURE REVIEW PENERAPAN TEORI PERMAINAN DALAM PENGAMBILAN KEPUTUSAN EKONOMI Lubis, Ekki Wahyuni
Relevan : Jurnal Pendidikan Matematika Vol 5 No 6 (2025): Relevan : Jurnal Pendidikan Matematika
Publisher : Yayasan Amanah Nur Aman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58432/relevan.v5i6.1692

Abstract

Penelitian ini membahas pengambilan keputusan ekonomi dalam konteks persaingan, promosi, dan kolaborasi bisnis dengan menggunakan pendekatan teori permainan. Metode yang digunakan adalah Systematic Literature Review (SLR) terhadap 10 artikel ilmiah yang terbit pada periode 2020–2025, terdiri atas jurnal nasional dan internasional. Analisis difokuskan pada tiga model teori permainan, yaitu Nash Equilibrium, Prisoner’s Dilemma, dan Mixed Strategy. Hasil kajian menunjukkan bahwa Nash Equilibrium berperan dalam menjaga kestabilan strategi harga dan promosi pada pasar yang kompetitif. Model Prisoner’s Dilemma mengungkapkan bahwa persaingan berlebihan dapat menimbulkan kerugian bersama, sehingga kolaborasi bisnis mampu menghasilkan nilai ekonomi yang lebih optimal. Sementara itu, Mixed Strategy relevan dalam ekonomi digital karena membantu pelaku usaha menghadapi ketidakpastian pasar. Penelitian ini menegaskan bahwa teori permainan berfungsi sebagai kerangka strategis dalam pengambilan keputusan ekonomi modern serta memiliki implikasi bagi pengembangan kebijakan dan strategi bisnis berbasis kolaborasi. ABSTRACT This study discusses economic decision-making in the context of competition, promotion, and business collaboration using a game theory approach. The method used is a Systematic Literature Review (SLR) of 10 scientific articles published between 2020 and 2025, consisting of national and international journals. The analysis focused on three game theory models, namely Nash Equilibrium, Prisoner's Dilemma, and Mixed Strategy. The results of the study show that Nash Equilibrium plays a role in maintaining the stability of pricing and promotion strategies in competitive markets. The Prisoner's Dilemma model reveals that excessive competition can cause mutual losses, so that business collaboration can produce more optimal economic value. Meanwhile, Mixed Strategy is relevant in the digital economy because it helps businesses deal with market uncertainty. This study confirms that game theory serves as a strategic framework in modern economic decision-making and has implications for the development of collaboration-based business policies and strategies.
Co-Authors Dermawan, Dwi Ardy Lubis, Abdullah Mubarak Nasution, Mulkan Iskandar Rahma, Fadhila Reyvani, Divya Syahputra, Inal