Afrillia, Yesi Martha
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Prospective elementary teachers’ informal mathematical proof using GeoGebra: The case of 3D shapes Putra, Zetra Hainul; Afrillia, Yesi Martha; Dahnilsyah; Tjoe, Hartono
Journal on Mathematics Education Vol. 14 No. 3 (2023): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v14i3.pp449-468

Abstract

Mathematical proofs play a paramount role in developing 21st-century skills, and the use of technology in mathematics learning has widely paved the way in the instruction of mathematical proofs. In mathematics education, GeoGebra has a significant role as a dynamic mathematics software in supporting students' learning process. This study aims to use GeoGebra in supporting prospective elementary teachers' mathematical proofs of the volume of 3-D shapes. This research used a case study method with 23 first-year prospective elementary teachers as participants from a public university in Riau, Indonesia.  The data were gathered by means of students' work recordings in the GeoGebra classroom and video recordings from their interactions in the course of small group and classroom discussions. The videos were transcribed using verbatim, and then the mathematical proofs were analyzed using praxeological analysis. The findings show that prospective elementary teachers still had challenges to connect the construction of the volume of 3-D shapes using GeoGebra to its informal mathematical proofs. However, GeoGebra provides an opportunity to learn informal mathematical proofs for prospective elementary teachers.
Project-based learning in teacher education: A reflection on analysing prospective elementary teachers’ knowledge of math, didactics, and technology Putra, Zetra Hainul; Alim, Jesi Alexander; Melihayatri, Ningrum; Dahnilsyah; Afrillia, Yesi Martha; Aljarrah, Ayman
Journal on Mathematics Education Vol. 17 No. 1 (2026): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v17i1.pp179-198

Abstract

Teacher education programs play a crucial role in equipping prospective teachers with the necessary skills to teach mathematics effectively in elementary schools. However, incorporating mathematical, didactic, and technological knowledge remains a challenge. This study aims to investigate the potential of Project-Based Learning (PjBL) to support the development of prospective elementary teachers’ mathematical, didactic, and technological knowledge. Empowering a qualitative design, this study adapted a didactic engineering approach grounded in the Anthropological Theory of the Didactic (ATD). The participants comprised 28 third-year prospective elementary teachers. Data collection involved project documents, observations, reflective journals, and interviews. The findings indicate notable progress in participants’ capacity to design contextual and visual mathematics tasks; however, their theoretical justification was still limited. Thematic coding of the data explained a paradigm shift towards active and experienced teaching. However, reflections on the pedagogical functions of technological tools remained underdeveloped. The study suggests incorporating theory-based reflection and praxeological analysis into teacher education curricula to enhance prospective teachers’ capacity to apply teaching theories in practice, engage in reflective practice, and adapt to diverse students’ needs.