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All Journal Jupiter Paradikma: Jurnal Pendidikan Matematika Jurnal Daya Matematis Al Ishlah Jurnal Pendidikan BAREKENG: Jurnal Ilmu Matematika dan Terapan AXIOM : Jurnal Pendidikan dan Matematika Prima: Jurnal Pendidikan Matematika Jurnal Kridatama Sains dan Teknologi Jambura Journal of Biomathematics (JJBM) Mosharafa: Jurnal Pendidikan Matematika Griya Journal of Mathematics Education and Application Jurnal SAINTIKOM (Jurnal Sains Manajemen Informatika dan Komputer) ALACRITY : Journal Of Education MATHunesa: Jurnal Ilmiah Matematika Innovative: Journal Of Social Science Research Tekmulogi: Jurnal Pengabdian Masyarakat Journal of Mathematics, Computation and Statistics (JMATHCOS)
Yulita Molliq Rangkuti
Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan
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PENGEMBANGAN MEDIA PEMBELAJARAN MACROMEDIA FLASH MELALUI PEMBELAJARAN CASE METHOD UNTUK MENINGKATKAN KEMAMPUAN REPRESENTASI MATEMATIS Alkhasannah, Riani; Fauzi, Kms. Amin; Rangkuti, Yulita Molliq
AXIOM : Jurnal Pendidikan dan Matematika Vol 12, No 1 (2023)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/axiom.v12i1.15707

Abstract

Penelitian ini bertujuan mengembangkan media pembelajaran Macromedia Flash dengan pembelajaran case method pada materi program linear yang memenuhi aspek kevalidan, kepraktisan, dan keefektifan berorientasi pada kemampuan representasi matematis siswa. Penelitian ini dilakukan dengan menggunakan model pengembangan ADDIE. Pada tahap implementasi dilakukan sebanyak 2 kali uji coba yang terdiri atas 3 pertemuan. Hasil penelitian menunjukkan kevalidan media pembelajaran memperoleh skor rata-rata sebesar 3,69 dengan kategori valid. Untuk kepraktisan media pembelajaran yang dilakukan pada uji coba I memperoleh skor rata-rata sebesar 2,6 dengan kategori terlaksana kurang baik dan pada uji coba II memperoleh skor sebesar 3,58 dengan kategori terlaksana dengan baik. Untuk keefektifan media pembelajaran didasarkan pada 3 indikator yaitu ketuntasan belajar secara klasikal, waktu ideal aktivitas siswa, dan respon siswa. Pada uji coba I, dari 29 siswa hanya 14 siswa (48%) yang tuntas secara klasikal. Pada uji coba II, dari 32 siswa terdapat 26 siswa (90%) yang memperoleh ketuntasan tinggi secara klasikal. Untuk waktu ideal aktivitas siswa memperoleh tingkat keberhasilan 100% dalam memenuhi waktu yang diinginkan selama dua pertemuan. Respon siswa untuk seluruh pertemuan menunjukkan kategori tertarik dengan nilai rata-rata skor pada uji coba I yaitu 3,54 (kategori tertarik), dan pada uji coba IIyaitu nilai 3,64 (kategori tertarik). Indeks gain uji coba II yaitu 0,38 (kategori sedang). hal tersebut menunjukkan bahwa media pembelajaran yang dikembangkan telah memenuhi kriteria produk yang baik dan media yang dikembangkan melalui pembelajaran case method dapat meningkatkan kemampuan representasi matematis siswa. AbstractThis study aims to develop Macromedia Flash learning media through case method learning on linear program material that meets the aspects of validity, practicality, and effectiveness oriented toward students' mathematical representation abilities. This study was conducted using the ADDIE development model. At the implementation stage, two trials were carried out consisting of three meetings. The results showed that the validity of learning media obtained an average score of 3.69 in the valid category. The practicality of learning media carried out in trial I obtained an average score of 2.6 in the category implemented poorly, and obtained a score of 3.58 in trial II in the category well implemented. The effectiveness of learning media is based on 3 indicators, namely classical learning completeness, ideal time for student activities, and student responses. In the first trial, of 29 students, only 14 students (48%) completed successfully. In the second trial, of 32 students, there were 26 students (90%) who obtained high scores. For the ideal time of activity, students get a 100% success rate in fulfilling the desired time for two meetings. Student responses for all meetings showed an interested category with an average score in trial I, namely 3.54 (interested category), and in trial II, namely a value of 3.64 (interested category). The gain index of trial II is 0.38 (moderate category). This shows that the developed learning media in this study has met the criteria for a good product which means the media developed through the case method learning can improve students' mathematical representation abilities.
Development of Quantum Learning-Based Articulate Storyline Learning Media to Improve Students' Mathematical Communication Skills Furqoni, Mizta Dwi Hafizah; Rajagukguk, Waminton; Rangkuti, Yulita Molliq
PARADIKMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 16 No. 2 (2023): PARADIKMA JURNAL PENDIDIKAN MATEMATIKA (July - December 2023)
Publisher : Study Program of Mathematics Education of Unimed Postgraduate Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/paradikma.v16i2.48723

Abstract

The main purpose of this study is to describe the validity, practicality, and effectiveness of articulate storyline learning media based on quantum learning. This medium is specifically designed to improve students' mathematical communication skills. The research conducted is included in the development research category, with the ADDIE model as the chosen development model. The results showed that the learning media met the required validity criteria, which was shown from the analysis conducted by validators. In addition, the learning media proved to be practical, as observed during its implementation, and was considered effective in improving students' mathematical communication skills. This effectiveness is evidenced by the achievement of students' communication skills classically, and students are interested in learning media. In addition, the average N-Gain is in the medium category which indicates that the learning media is successful in improving students' mathematical communication skills.Keywords: Learning Media, Articulate Storyline, Quantum Learning, Mathematical Communication Skills
Penggunaan K-Means Clustering untuk Segmentasi Tokoh Politik Berdasarkan Potensi Kepemimpinan Di Sumatera Utara Tambunan, M. Ananda Rizki; Idrus, Said Iskandar Al; Indra, Zulfahmi; Rangkuti, Yulita Molliq; Manullang, Sudianto
ALACRITY : Journal of Education Volume 6 Issue 1 Februari 2026 | IN PRESS
Publisher : LPPPI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52121/alacrity.v6i1.986

Abstract

Penelitian ini membahas penerapan algoritma K-Means Clustering untuk mengelompokkan tokoh politik di Sumatera Utara berdasarkan potensi kepemimpinan mereka. Permasalahan yang diangkat meliputi kesenjangan pembangunan antarwilayah, kompleksitas evaluasi kandidat, serta keterbatasan metode penilaian tradisional yang cenderung subjektif. Data yang digunakan merupakan data sekunder dari KPUD Sumatera Utara, Kemendagri, dan media sosial, dengan tiga variabel kuantitatif utama: tingkat pendidikan, pengalaman kepemimpinan, dan tingkat elektabilitas. Proses analisis meliputi normalisasi data, penentuan jumlah klaster optimal menggunakan metode elbow, dan penerapan algoritma K-Means untuk menghasilkan pengelompokan tokoh politik. Hasil penelitian menghasilkan beberapa klaster dengan karakteristik berbeda yang dapat memberikan gambaran profil kepemimpinan potensial di Sumatera Utara. Penelitian ini diharapkan dapat menjadi referensi objektif bagi masyarakat dan pemangku kepentingan dalam pengambilan keputusan politik, sekaligus memberikan kontribusi teoretis terhadap penerapan machine learning dalam analisis politik lokal.
Co-Authors Adidtya Perdana, Adidtya Ahmad Landong Ahmad Rifai Siregar, Ahmad Rifai Ahyar, Khoirul Alkhasannah, Riani Anggraini, Nisa Putri Arnita Arnita Dian Armanto DIdi Febrian Dona Fitriawan Elvis Napitupulu, Elvis Erlinawaty Simanjuntak, Erlinawaty Fadillah, Wahyu Nur Fauzi, KMS. Amin Felicia Eldora Firmansyah Firmansyah Fitri Rahayu Fitria, Nur Anisa Furqoni, Mizta Dwi Hafizah Gultom, Ledy Meva Tiurma Haraha, Melyana Harahap, Muhammad Abarorya Hasratuddin Hasratuddin Ichwanul Muslim Karo Karo Insan Taufik Kana Saputra S Karo, Ichwanul Karo Khoiriyati Azmi Kokod, Mario Maysan Landong, Ahmad Londong, Ahmad Lubis, Mufida Azza Iskandar MANSUR AS Manullang, Sudianto Mutiara Sihaloho, Laura Adelia Natasya, Amanda Nur Hafni Nurfadilah Siregar Nurhasanah Siregar . Refisis, Nice Rejoice Said . Iskandar Sianturi, Josua Siburian, Rulli Prasetio Bane Sihite, Esra Kristiani Silvi, Meutia Simanjuntak, Christina N simorangkir, risna Sinaga, Marlina Setia Siregar, Fadhillah Rahma Siregar, Julya Syahleni Tambunan, M. Ananda Rizki Tarigan, Dewan Dinata Tarigan, Yosua Yosephine Waminton Rajagukguk Wibowo, Adinda Zulfahmi Indra, Zulfahmi