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All Journal Electronic Journal of Graph Theory and Applications (EJGTA) Palapa: Jurnal Study Keislaman dan Ilmu Pendidikan Jurnal Penelitian Pendidikan IPA (JPPIPA) MAJAMATH: Jurnal Matematika dan Pendidikan Matematika BAHTERA : Jurnal Pendidikan Bahasa dan Sastra Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services) Jurnal Ilmiah Profesi Pendidikan Mandalika Mathematics and Educations Journal Journal of Classroom Action Research Majalah Ilmiah Matematika dan Statistika (MIMS) Jurnal Teknologi Informatika dan Komputer Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Jurnal Teknologi Pendidikan : Jurnal Penelitian dan Pengembangan Pembelajaran Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Griya Journal of Mathematics Education and Application Rengganis Jurnal Pengabdian Masyarakat Unram Journal of Community Service (UJCS) Jurnal Pijar MIPA Journal of Social Outreach Jurnal Pendidikan dan Pengabdian Masyarakat Action Research Journal Dedikasi Cendekia: Warta Pengabdian Pendidikan Sigma&Mu: Journal of Mathematics, Statistics and Data Science Indonesian Journal of STEM Education Jurnal Didaktik Matematika
Amrullah Amrullah
Departement Of Mathematics, University Of Mataram, Jl. Majapahit No. 62 Mataram, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Penerapan Konsep Pewarnaan Graf Dalam Penyusunan Jadwal Kegiatan Belajar Mengajar Di SMKN 4 Mataram Laili Gadis Hasanah; Sripatmi Sripatmi; Amrullah Amrullah; Baidowi Baidowi
Indonesian Journal of STEM Education Vol. 3 No. 1 (2021): Edisi Januari-Juni 2021
Publisher : Indonesian Publication Center

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The problem of scheduling learning activities at SMKN 4 Mataram is the same teachers are scheduled at the same time in two class or more. The coloring graph concept can be used to find out the causes of the scheduling problems at SMKN 4 Mataram. Based on result of the application coloring graph concept generated  to the chromatic number is 23 with slots number is 46 which is smaller than 55 or  time slots  at SMKN 4 Mataram. Because slots of chromatic number are smaller than the time slots at SMKN 4 Mataram, it is known that the causes of scheduling problems at SMKN 4 Mataram are wrong scheduling way. One of solution to this problem is to compile a schedule based on the coloring graph concept by mapping 419 subjects with 84 teachers and 55 time slots spread from Monday to Saturday. In applying the coloring graph concept, the Largest Degree Ordering (LDO) algorithm is used. It is because this algorithm is simpler than other algorithms.
Pengembangan Media Pembelajaran Berbasis Tailwind CSS dan GeoGebra Pada Materi Geometri Transformasi Untuk Kelas IX MTsN 2 Mataram Hidayah, Khulaeni Hidayatul; Amrullah, Amrullah; Kurniawan, Eka
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.885

Abstract

This research aims to develop a learning media based on Tailwind CSS and GeoGebra in the topic of Transformation Geometry for ninth-grade students at MTsN 2 Mataram. The background of this study is students’ difficulties in understanding transformation geometry concepts due to their abstract nature and the limitations of conventional learning media, which tend to be less interactive. The method used in this study was Research and Development (R&D) with ADDIE (Analysis, Design, Development, Implementation, Evaluation) as the development model. The research sample consisted of ninth-grade E class students of MTsN 2 Mataram. The developed learning media was evaluated for its feasibility by media experts and tested with students. The validation results showed that the developed learning media met the feasible criteria with a feasibility percentage of 74,6%. The practicality test through student questionnaires also indicated a very practical category with a practicality percentage of 93,65%. Therefore, the learning media based on Tailwind CSS and GeoGebra is considered feasible and practical to be used as a learning aid in teaching transformation geometry at schools.
Penerapan Metode Welch-Powell Improvement Pada Pewarnaan Graf Untuk Penjadwalan KBM SMAN 7 Mataram Menggunakan Python Abi Rizky, Muhammad; Amrullah, Amrullah; Primajati, Gilang
Griya Journal of Mathematics Education and Application Vol. 5 No. 4 (2025): Desember 2025
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v5i4.910

Abstract

The preparation of teaching and learning schedules is often problematic, one of the reasons being the limited number of teachers, which means that one teacher has to teach several classes at the same time. This research is an applied study that aims to obtain a teaching and learning schedule without overlap by applying graph coloring using the Welch-Powell Improvement method. Graph coloring using the Welch-Powell Improvement method is a solution to solve scheduling problems at SMAN 7 Mataram. Based on the scheduling data, an adjacency matrix with a size of 898×898 and a chromatic number of 27 was obtained. The adjacency matrix was determined with the help of the Python programming language. The schedule was compiled by first creating a scheduling conflict graph based on the lesson schedule data, then coloring the graph using the Welch-Powell Improvement algorithm. Based on the coloring results obtained, the schedule was compiled by considering each node color. Subjects with the same color were scheduled at the same time and vice versa. The resulting class schedule was free of overlaps. This was because the chromatic number obtained in the graph coloring was smaller than the available time slots at SMAN 7 Mataram.
Analisis Kesalahan Siswa SMP pada Penyelesaian Masalah Sistem Persamaan Linear Dua Variabel Anna Citra Islamiyah; Sudi Prayitno; Amrullah Amrullah
Didaktik Matematika Vol 5, No 1 (2018): Jurnal Didaktik Matematika
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jdm.v5i1.10035

Abstract

Background of this research is many student errors at solving linear equation systems with two variables problems. The research aim is to know the kinds and level of errors at solving linear equation systems with two variables problems. This research is descriptive quantitative. The subject of this study is 30 students grade 7 from one of junior high school at Mataram, West Nusa Tenggara. A data collection done by tested and interviewed. The error of the problem solving that could analyze were a reading error, comprehension, transformation, process skills and encoding. Result of the research indicate that percentage of reading error was 17.78% (too low category), comprehension error was 55.56% (middle category), transformation error was 18.52% (too low category), process skills error was 36.67% (low category) and encoding error was 83.70% (too high category).
Co-Authors Abda Abda Abdul Haris Munandar Abi Rizky, Muhammad Abida Wadiatun Ilahi Afandi, Noval Afifurrahman Afifurrahman Ahmad Badawi Aliyatul Himmah Amelia Kusuma Andri Okta Firmansyah Anna Citra Islamiyah Annisa Annisa Arifuddin Arifuddin Arjudin Arjudin Arjudin Arjudin Atiqa Firdaus Aulia, Syafa Awwalus Sanatil Hijriati Baehaqi Baidowi Baidowi Baiq Anita Rahayu Bisriyah, Bisriyah Bq. Nerik Prawita Caesarla Elintang Yolawati Dadi Setiadi Darajatul Khunul Khotimah Darojatun Fikri Dedi Riyan Rizaldi Deni Deni Deni Hamdani Dian Endang Lestari Eka Kurniawan Eka Kurniawan Ekky Irza Afriansyah Ery Nurjayanto Fadila, Kasturi Anisa Farizal Ramadhan Farizal Wahyu Trigantara Faturahman Faturahman Feby Attina Sari Firdaus, Atiqa Firmansyah, Didi Gossani Puja Lestari H. Lalu Nurtaat Hadisaputra, S. Hapipi Hapipi Hardika Budianto Harry Soeprianto Harry Soeprianto Harry Soeprianto Hasan, Riska Rahmawati Hendi, Muhammad Herman Firdaus Hidayah, Khulaeni Hidayatul Hidayanti, Gusma I MADE SUJANA . I Nyoman Sridana I. M. Sujana Iftahul Muhayana Ikrimatullael Ikrimatullael Ilhamdi, M. L. Jihan Fahira Juliyanti Juliyanti Junaidi Junaidi Junaidi Junaidi Junaidi Junaidi Ketut Sarjana Ketut Sarjana KETUT SARJANA, KETUT Kurniawan, Eka Laila Hayati Laila Hayati Laila Hayati, Laila Laili Gadis Hasanah Lalu Nurtaat Lalu Riki Gita Sukma M. Khairul Miswari M. L. Ilhamdi M. Satria Ramanda Maksud, Maksud Mar'atun Atun Mariamah Mariamah Maulyda, ‪Mohammad Archi Muh. Makhrus Muhammad Arifuddin Muhammad Fadjri Muhammad Turmuzi Muhammda Faisal Khatami Muntari Muntari Muslim Muslim Nani Kurniati Nani Kurniati Nani Kurniati Ni Made Ayu Ulandari Ni Made Intan Kertiyani Nilwan Nina Muthmainnah Nopyta Intan Sari Nourma Nourma Nourma Pramestie Wulandari Nur Asniati Nurdianti Nurdianti Nurul Hikmah NURUL HIKMAH Nurul Hikmah Nurul Indah Nurul Pratiwi Nyoman Sridana Nyoman Sridana Nyoman Sridana Prayitno S Primajati, Gilang Purnamasari, Erni Putri Husnul Khotimah Rahmani , Irma Reksa Haniantara Richard Yesaya Simanjuntak Ridha Wahidatul Ilmi Riki Tarnanda S. Hadisaputra Salsabila, Nilza Humaira Sangga Patih Alam Septiyana Kurnia Hartatin Sinta Baiq Sinta Silviana Muslim Sri Romlawati Sri Seno Handayani Sri Seno Handayani Sri Subarinah Sri Subarinah Sri Subarinah Sri Subarinah Sri Subarinah, Sri Sri Subarinah4 Sridana Sridana Sripatmi Sripatmi Sripatmi Sripatmi Sripatmi Sripatmi, Sripatmi Suci Fatmala Sari Sudi Prayitno Sudi Prayitno Sugiarty, Vetty Sujana, I. M. Syahrul Azmi Syahrul Azmi Syahrul Azmi Syarifah Umdah Maryam Syawahid, M Tabita Wahyu Triutami Tabita Wahyu Triutami Tri Rahayu Agustina Udin Udin Ulfa Lu’luilmaknun Ulfa Lu’luilmaknun Wahidaturrahmi Wahidaturrahmi, Wahidaturrahmi Widiati Wulandari, Nourma Pramestie Zanirah Permatasari Ziadatul Fatimah