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All Journal JURNAL AXIOMA : Jurnal Matematika dan Pembelajaran
lutfiyah Lutfiyah
Universitas PGRI Argopuro Jember, Indonesia
Education Mathematics

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Prilaku Proses Berpikir Menyelesaikan Geometri Pada Konteks Bahasa: Verbalization, Self-Explanation, Oral Description Lutfiyah Lutfiyah; Susanto Susanto; Abi Suwito
Jurnal Axioma : Jurnal Matematika dan Pembelajaran Vol. 11 No. 1 (2026): Januari
Publisher : Universitas Islam Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56013/axi.v11i1.5015

Abstract

This study aims to describe students’ thinking processes in solving geometry problems through verbal expressions: verbalization, self-explanation, and oral description. The participants were three university students who were asked to work on geometry tasks containing linguistic descriptions. Data were collected through video recordings, students’ written solutions, and think-aloud notes capturing their thinking processes. Data analysis followed three stages: data reduction, data display, and conclusion drawing. The results show that all participants demonstrated strong verbalization skills by restating key information from the problem text and representing it through labels and annotations in their drawings. In the self-explanation aspect, the three students attempted to justify their solution steps through sequences of calculations, although the strategies they used were not entirely accurate. Regarding oral description, all participants were able to describe the triangle structure, point positions, and altitude lines, yet not all of them could consistently connect these visualizations with correct computational procedures. These findings affirm that students’ verbal expressions play an important role in revealing the structure of their thinking processes, especially in geometry problems that require integration between linguistic descriptions and spatial representations. Keywords: Thinking Process, Geometry, Verbalization, Self-Explanation, Oral Description
Seperti Apa Pemahaman Konsep Geometri Bangun Datar Anak Tunarungu dalam Pembelajaran Menggunakan Video Audio-Visual Colour Guard (AVCG)? Dea Devi Anggraeni; Indah Rahayu Panglipur; Lutfiyah Lutfiyah
Jurnal Axioma : Jurnal Matematika dan Pembelajaran Vol. 11 No. 2 (2026): Juli
Publisher : Universitas Islam Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56013/axi.v11i2.5509

Abstract

This study aims to analyze students' understanding of flat geometry concepts through the application of Colour Guard audio-visual videos. The study uses a qualitative descriptive method with three deaf students in grade IX at the Jember State Special School as subjects. Data collection techniques included observation, interviews, documentation, and written tests. The Colour Guard audio-visual video was used as a learning medium to help students understand flat shape concepts visually. The results of the study indicate that the use of the Colour Guard audio-visual video was able to improve students' understanding of flat shape geometry concepts, as indicated by increased activity, attention, and written test results. In addition, students responded positively to the learning media because of its clear and attractive visual presentation, which facilitated their understanding of the concepts. This media can be said to be suitable for supporting the learning of flat shape geometry for deaf students. Keywords: Conceptual Understanding, Plane Geometry, Deaf
Co-Authors Abi Suwito Dea Devi Anggraeni panglipur, indah rahayu Susanto, Susanto