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All Journal JME (Journal of Mathematics Education) Media Pendidikan Matematika
Evi Novita Wulandari
Universitas Negeri Surabaya
Computer Science & IT Education Environmental Science Mathematics Social Sciences

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COLLECTIVE ARGUMENTATION AND PARTICIPATION IN SOLVING GEOMETRY PROBLEMS IN THE MATHEMATICS CLASSROOM Evi Novita Wulandari; Dwi Juniati; Siti Khabibah
JME (Journal of Mathematics Education) Vol. 9 No. 2 (2024): JME
Publisher : USN Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31327/jme.v9i2.2291

Abstract

Collective argumentation is a process in learning that can be used to train communication skills, collaboration, and understanding of mathematical concepts. In this process, both teachers and students play an active role, which is called participation. This study aims to describe the structure of collective argumentation and teacher and students participation in solving geometry problems in the classroom. This research method is a qualitative case study. The subjects in this study were a mathematics teacher with 11 years of teaching experience at the junior high school level and six 9th-grade students who had an interest in mathematics from two different classes. The structure of collective argumentation shows that this learning focuses on students while the teacher acts as a facilitator. It can be seen from the more significant number of actions taken by students than teachers. In terms of participation, teachers more often act as ghostee, while students participate more as spokesman. Overall, this study reveals the structure of argumentation in solving geometry problems at each stage of Polya. Questions and explanations given by the teacher influence students' collective argumentation. A teacher must have questioning and communication skills so that students can actively participate in learning in the classroom.
Aktivasi MPCK Guru Matematika dalam Pembelajaran Geometri: Studi Komparatif pada Guru yang Telah dan Belum Mengikuti PPG Muhamad Badrul Mutammam; Evi Novita Wulandari; Frenza Fairuz Firmansyah; Ngizatul Afifah; Shima Kunaza Fazira; Arin Berliana Angrenani
Media Pendidikan Matematika Vol. 14 No. 1 (2026): J-MPM
Publisher : Program Studi Pendidikan Matematika, FSTT, Universitas Pendidikan Mandalika

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Abstract

This study aims to describe and compare the activation of mathematics teachers' Mathematics Pedagogical Content Knowledge (MPCK) in geometry instruction in two observed cases: one teacher who had participated in the Professional Teacher Education Program (PPG) and one teacher who had not participated in PPG. This study used a comparative qualitative case study design involving two junior high school mathematics teachers with more than ten years of teaching experience. Both teachers taught the same topic, namely cubes in flat-sided solid geometry, in two different Grade 8 classes with 36 students in each class. Data were collected through video-based classroom observations, analysis of lesson plans and students' worksheets, and semi-structured interviews. The video data were transcribed, segmented into instructional episodes, coded using MPCK indicators, and triangulated with document and interview data. The findings show that the teacher who had participated in PPG displayed more varied MPCK activation, particularly in the use of concrete and visual representations, mathematical communication, classroom discussion, formative responses, and responses to students' misconceptions about edges, faces, cube nets, and surface area. In the observed cases, participation in PPG may be associated with more varied MPCK activation; however, this relationship cannot be interpreted causally because the study involved only two teachers in a limited context. The findings also indicate that Mathematical Content Knowledge (MCK) functions as an important foundation for MPCK, but MPCK becomes visible when content knowledge is transformed into representations, guiding questions, discussion, and formative feedback that support students' conceptual understanding
Co-Authors Arin Berliana Angrenani Dwi Juniati Frenza Fairuz Firmansyah Muhamad Badrul Mutammam Ngizatul Afifah Shima Kunaza Fazira Siti Khabibah