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All Journal Jurnal Konseling dan Pendidikan Khazanah Pendidikan Islam Polyhedron International Journal in Mathematics Education Jurnal Pendidikan MIPA
Krisnadi, Elang
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Education Mathematics Other

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Fostering Prospective Teachers’ Disposition: A Lesson Study in Linear Programming Topics Embedded by Technology Krisnadi, Elang; Kandaga, Thesa
Polyhedron International Journal in Mathematics Education Vol. 2 No. 1 (2024): pijme
Publisher : Nashir Al-Kutub Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59965/pijme.v2i1.104

Abstract

In modern education, especially in higher degree programs, disposition was one of several factors that highly affected the learning process. The purpose of this research was to foster mathematical disposition among prospective teachers through a technology approach. POM-QM represented technology embedded into the learning process. Each cycle started with planning the embedding of technology into learning, realizing the plan by engaging a model teacher and an observer, and then ending with reflection to improve the next learning process to be applied to another class or the next topic. This lesson study began at the very beginning of linear programming. The conclusion was that the chapter design was able to foster mathematical dispositions. Some other affective and cognitive skills were known to have improved. The conclusion also covered some other unwritten but proper actions to take in the learning process based on lesson study reflection and evaluation. It was hoped that subsequent researchers would be able to implement lesson study activities during lecture activities.
Improving Indonesian students' mathematical literacy with brain-based learning: a comparative study of pisa scores Kandaga, Thesa; Krisnadi, Elang; Nurhayati, Suci; Gusti, Valeria Yekti Kwasaning
Jurnal Konseling dan Pendidikan Vol 12, No 3 (2024): JKP
Publisher : Indonesian Institute for Counseling, Education and Therapy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/1118500

Abstract

This research is driven by Indonesia's comparatively low performance in the 2023 PISA assessment, which indicates a significant deficiency in students' capacity to solve literacy-based mathematical problems, largely attributable to the absence of comprehensive, structured guidance. This consequently gives rise to low levels of mathematical literacy, thereby underscoring the necessity for enhanced learning methodologies. The objective of this study is to evaluate the efficacy of the Brain-Based Learning (BBL) model in enhancing students' mathematical literacy abilities in comparison to the traditional learning approach. This study employed a quasi-experimental methodology with an unequal control group design. The research subjects were 72 grade VIII students at SMPN 1 Baleendah, comprising 36 experimental group students (grade VIII K) and 36 control group students (grade VIII L). The data were obtained through mathematical literacy tests and subsequently analysed using descriptive and inferential statistics with the assistance of IBM SPSS 24.0 software. The results of the n-gain analysis indicated that the data were normally distributed with homogeneous variances. The results of the independent sample t-test indicated a statistically significant difference in the improvement of mathematical literacy skills between the two groups, with the BBL group exhibiting a greater degree of improvement than the conventional method. These findings contribute to the scientific literature on the effectiveness of the Brain-Based Learning (BBL) model in addressing low mathematical literacy in Indonesia, with statistically significant improvements. This research provides new insights into the application of brain-based learning models in the Indonesian educational context.
Bridging Misconceptions and Representations in Teaching Division: Insights from Bruner’s Theory in Indonesian Classrooms Puryati, Puryati; Krisnadi, Elang; Ramdhani, Sendi
Khazanah Pendidikan Islam Vol. 7 No. 2 (2025): Khazanah Pendidikan Islam
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/kpi.v7i2.46164

Abstract

This qualitative study investigates elementary school teachers’ conceptual understanding and instructional strategies for teaching division, with a focus on Bruner’s stages of representation—enactive, iconic, and symbolic. Data were collected from 32 Indonesian teachers through open-ended prompts exploring their interpretations of division and classroom practices. Findings reveal a predominant reliance on procedural models, particularly repeated subtraction, with limited use of conceptual models like equal grouping or inverse multiplication. While many teachers employ concrete strategies, few demonstrate coherent transitions to visual and symbolic representations, resulting in fragmented instruction. The analysis also highlights inconsistencies between teachers' conceptual models and instructional methods, underscoring gaps in pedagogical content knowledge. By integrating frequency tables and case comparisons, the study identifies the need for professional development that supports representational fluency and conceptual alignment. Bruner’s framework is proposed as a guide to scaffold instruction that supports diverse learners and fosters deeper mathematical understanding. Implications for teacher education and curriculum design are discussed.  
Misconceptions on Interpreting and Modeling the Concept of Division Among Elementary School Teachers Krisnadi, Elang; Kandaga, Thesa; Adnan, Mazlini
Jurnal Pendidikan MIPA Vol 26, No 3 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i3.pp1496-1514

Abstract

This study investigates the nature and extent of conceptual misconceptions held by elementary school teachers in interpreting and modeling the mathematical concept of division. Motivated by the recognition that students’ misunderstandings often originate from teachers’ inadequate conceptual grasp, particularly regarding the use of partitive and quotative models, this research addresses a critical gap in the literature on teachers' mathematical representations. Although division is a foundational concept in mathematics instruction, limited empirical research has explored how teachers misconstrue its meanings in classroom contexts. Employing a descriptive qualitative design within a multiple-case study framework, the study involved 80 fifth-grade teachers from four major Indonesian cities: Jakarta, Bandung, Yogyakarta, and Surabaya. Participants were selected through purposive sampling. Data were collected through classroom observations, semi-structured interviews, and lesson plan analysis. Thematic analysis was used to identify recurring patterns of misconception across instructional practices.  Findings in this study revealed misconceptions among many teachers in distinguishing between the partitive (repeated subtraction) and quotative (equal sharing) interpretations of division. This confusion results in the use of inappropriate, rigid, or overly simplified concrete models. The misconception distorts mathematical representations and contributes directly to the propagation of student misconceptions. The most prominent patterns occurred during story problem interpretation, where teachers struggled to match the semantic structure with the appropriate division model. These conceptual misconceptions not only distort instructional representations but also contribute to students' way of thinking. These findings highlight the urgent need for targeted professional development programs. Those would emphasize semantic analysis of word problems and the flexible use of multiple representations. Such interventions are essential to help teachers deliver instruction that fosters conceptual understanding beyond procedural fluency. Aligning teacher training with findings in this study may prevent the transfer of fundamental misconceptions to students and promote deeper mathematical thinking in early education contexts.    Keywords: misconceptions, interpretations, division, elementary school, teacher.
Co-Authors Adnan, Mazlini Gusti, Valeria Yekti Kwasaning Puryati Puryati, Puryati Sendi Ramdhani Suci Nurhayati Thesa Kandaga