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All Journal JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI Jurnal Pengajaran MIPA Journal on Mathematics Education (JME) EDU-MAT: Jurnal Pendidikan Matematika Edumatsains Formatif: Jurnal Ilmiah Pendidikan MIPA JPMI (Jurnal Pembelajaran Matematika Inovatif) Ta'dib SIGMA DIDAKTIKA: Jurnal Pendidikan Matematika
Yaya S. Kusumah
Universitas Pendidikan Indonesia
Religion Agriculture, Biological Sciences & Forestry Chemistry Education Mathematics Physics Social Sciences Other

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Bilangan Kromatik Graf Hasil Operasi Korona Sisi Graf Siklus dan Graf Bintang Alivia Alivia; Kartika Yulianti; Yaya S. Kusumah
Jurnal Matematika, Statistika dan Komputasi Vol. 21 No. 2 (2025): JANUARY 2025
Publisher : Department of Mathematics, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/j.v21i2.37361

Abstract

One of the concepts in graph theory that can be analyzed is chromatic numbers of a graph and operation of two graphs. There are various kinds of operations of two graphs, one of which is the corona edge operation. This research aims to determine the chromatic number of the edge corona operation of graph Cn*K1,m  and K1,m*Cn, where Cn is a cycle graph and K1,m is a star graph. The chromatic number is determined based on the pattern formed from several n and m values. The results of this research show that the chromatic number of the edge corona operation of graph Cn*K1,m  is 4 for n= 3, 4, ... k   and m=1, 2, 3, ..., l. The chromatic number of the edge corona operation of graph K1,m*Cn is 5 if n is odd number. and is 4 if n is even number.
Scientific Academic Writing Skills Among University Students: Results from a Self-Assessment Survey Lussy Midani Rizki; Stevi Natalia; Nurafni; Suparman; Darhim Kusumah; Yaya S. Kusumah; Dadang Juandi
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 9 No 2 (2025): January
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v9i2.6355

Abstract

This qualitative descriptive study provides a comprehensive profile of scientific academic writing skills among university students enrolled in mathematics education and primary school teacher education programs. Using a self-assessment survey, 110 students evaluated their proficiency across various dimensions of scientific writing, including clarity and coherence, organization of scientific arguments, use of scientific terminology, citation and referencing, critical evaluation of literature, and independent thinking. The data were analyzed using descriptive statistics to identify trends, strengths, and areas for improvement in students' writing skills. The findings revealed that students generally feel confident in their ability to construct clear academic paragraphs and use appropriate vocabulary and tone, but struggle with higher-order writing tasks such as synthesizing information from multiple sources and organizing extended scientific texts. Many students also expressed difficulties in applying proper citation and referencing styles, particularly APA format. Key strengths identified in the study include competence in basic grammar, punctuation, and paragraph structure, while notable weaknesses were found in areas such as critical evaluation, organizing complex arguments, and correct application of citation conventions. These results suggest a need for targeted instructional interventions to help students develop the advanced scientific writing skills necessary for academic success. The study's findings contribute to the ongoing discourse on improving scientific academic writing pedagogy, offering insights for educators to better support students in mastering these critical skills.
Co-Authors Alivia Alivia Dadang Juandi Darhim Darhim Darhim Kusumah Diar Veni Rahayu Elsa Komala Fatimah, Siti Isra Nurmai Yenti Jarnawi Afgani Dahlan Kartika Yulianti Lussy Midani Rizki Nelly Fitriani Nita Delima Nurafni Stevi Natalia Sugiman Sugiman Sulistiawati Sulistiawati Suparman Syafrianto Syafrianto Tamur, Maximus Yelli Oktavien