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All Journal Desimal: Jurnal Matematika JNPM (Jurnal Nasional Pendidikan Matematika)
Giyarti, Wed
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Education Mathematics Social Sciences

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Odd harmonious labeling on the amalgamation of the generalized double quadrilateral windmill graph Firmansah, Fery; Giyarti, Wed
Desimal: Jurnal Matematika Vol. 4 No. 3 (2021): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v4i3.10823

Abstract

Graph labeling is one of the topics of graph theory that is growing very rapidly both in terms of theory and application. A graph that satisfies the labeling property of odd harmonious is called an odd harmonious graph. The method used in this research is qualitative research by developing a theory and a new class of graphs from odd harmonious graphs. In this research, a new graph class construction will be given in the form of an amalgamation of the generalized double quadrilateral windmill graph. Furthermore, it will be proved that the amalgamation of the generalized double quadrilateral windmill graph is an odd harmonious graph. So that the results of the research show that the amalgamation of the generalized double quadrilateral windmill graph is a new graph class of odd harmonious graphs.
Mathematical Problem Solving and Its Teaching: Study from Indonesian Preservice Teachers Putranto, Sumbaji; Giyarti, Wed
JNPM (Jurnal Nasional Pendidikan Matematika) Vol 9 No 4 (2025)
Publisher : Universitas Swadaya Gunung Djati

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Abstract

This research aims to explore the understanding of preservice mathematics teachers in Indonesia regarding mathematics problems, problem-solving, and learning to develop problem-solving. The research used an exploratory sequential design which consists of two stages, involving quantitative and qualitative. The quantitative stage was carried out through a survey of 124 preservice mathematics teachers. Data was collected using a questionnaire given via Google Forms. Data was analyzed using descriptive statistics and an independent sample t-test. The qualitative stage was carried out through semi-structured interviews with 20 participants. Qualitative analysis adapting the Bogdan and Biklen technique, through data reduction, looking for themes and relationships between themes, and concluding. The results showed that the understanding of preservice mathematics teachers in Indonesia regarding problem solving and learning is in the sufficient category. The results of the independent sample t-test show that students who have studied for more than two years have a better understanding than those who have studied for less than two years. Several lecture activities that influence their understanding are project learning, exercises, and discussions. The result gave considered higher education or universities in providing an accommodating curriculum for students to develop their understanding of problem-solving and its teaching.
Co-Authors Fery Firmansah Putranto, Sumbaji