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All Journal JOHME: Journal of Holistic Mathematics Education PHI: Jurnal Pendidikan Matematika Griya Journal of Mathematics Education and Application AL JABAR: Jurnal Pendidikan dan Pembelajaran Matematika CONSISTAN : Jurnal Tadris Matematika
Fuad Luky Atmaja
UIN Raden Mas Said Surakarta
Education Mathematics

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EKSPLORASI KESULITAN SISWA: ANALISIS PEMAHAMAN KONSEPTUAL TENTANG PERTIDAKSAMAAN LINEAR DUA VARIABEL [EXPLORING STUDENT DIFFICULTIES: ANALYSIS OF CONCEPTUAL UNDERSTANDING OF TWO-VARIABLE LINEAR INEQUALITIES] Zulfa Nur Jannah; Fuad Luky Atmaja; Aprilia Wafik Asisha; Melvin Natalia Dwianggraeni
JOHME: Journal of Holistic Mathematics Education Vol. 9 No. 2 (2025): DECEMBER
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/johme.v9i2.10311

Abstract

This study employed a descriptive qualitative approach to analyze high school students’ conceptual understanding of Two-Variable Linear Inequality (PtLDV) problems. Conceptual understanding constitutes a core component of mathematical proficiency. Three students were selected through purposive sampling based on their problem-solving abilities. Data were collected using written tests, interviews, and documentation. The instruments were designed to measure three indicators of conceptual understanding: (1) the ability to restate concepts, (2) the capacity to present concepts through multiple mathematical representations, and (3) the ability to apply concepts or algorithms in problem-solving contexts. Data analysis followed the Miles and Huberman model. The findings indicate that two students demonstrated a high level of conceptual understanding, meeting all indicators, whereas one student exhibited a low level of understanding, particularly in relation to problem context and mathematical modeling. These results underscore the need to design adaptive learning strategies to support students with conceptual gaps and suggest that future studies using mixed-methods designs may yield deeper insights into this issue. BAHASA INDONESIA ABSTRACT: Penelitian ini menggunakan pendekatan kualitatif deskriptif untuk menganalisis pemahaman konseptual siswa sekolah menengah atas tentang masalah Pertidaksamaan Linear Dua Variabel (PtLDV). Pemahaman konseptual merupakan landasan kemahiran matematika. Tiga siswa dipilih sebagai subjek dengan menggunakan purposive sampling berdasarkan kemampuan pemecahan masalah. Data dikumpulkan melalui tes tertulis, wawancara, dan dokumentasi. Instrumen disusun untuk menilai tiga indikator pemahaman konseptual: (1) kemampuan menyatakan ulang konsep, (2) keterampilan menyajikan konsep dalam berbagai representasi matematis, dan (3) kompetensi menerapkan konsep atau algoritma untuk pemecahan masalah. Model Miles dan Huberman digunakan sebagai panduan dalam proses analisis data. Hasil penelitian menunjukkan bahwa dua siswa mencapai tingkat pemahaman yang tinggi, memenuhi semua indikator konseptual. Sebaliknya, satu siswa menunjukkan tingkat pemahaman yang rendah, menunjukkan kesulitan khusus dengan konteks masalah dan pemodelan matematika. Temuan ini menyoroti pentingnya merancang strategi pembelajaran adaptif untuk membantu siswa dengan kesenjangan pemahaman dan menyarankan agar pendekatan metode campuran dalam penelitian di masa depan dapat memberikan eksplorasi yang lebih mendalam tentang masalah ini.
ANALISIS KUALITAS SOAL PILIHAN GANDA DALAM ASESMEN SUMATIF MATEMATIKA MENGGUNAKAN TEORI TES KLASIK Annisa Nur Azizah; Fuad Luky Atmaja
AL JABAR: Jurnal Pendidikan dan Pembelajaran Matematika Vol. 5 No. 3 (2026): Juli
Publisher : LPPM Institut Ahmad Dahlan Probolinggo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46773/jz0mh014

Abstract

The purpose of this study is to describe the quality of objective test items used in summative assessments for mathematics based on classical test theory. This study will examine the aspects of difficulty, discriminative power, and the effectiveness of distractor options. The method used in this study is a descriptive quantitative approach involving 57 students from classes VIII A1 and VIII B as participants. The data used in this study were taken from 25 multiple-choice items on the summative assessment for the first semester of the 2025/2026 academic year, which were then analyzed using Microsoft Excel. The analysis results showed that the majority of items (56%) fell into the “moderate difficulty” category, while 40% were categorized as easy and 4% as difficult. In terms of discriminative power, 56% of the items fell into the “good to very good” category; meanwhile, 16% of the items were found to have low discriminative power. The effectiveness of distractors indicated that 70.67% of distractors functioned effectively, and 80% of the exam questions had good to very good distractor quality. Overall, this assessment tool is of good quality; however, some questions need to be revised to ensure more accurate and appropriate measurement of student skills.”
Pengembangan e-LKPD Flipbook Berbasis RME untuk Memfasilitasi Literasi Matematis Siswa SMP Rulia Nurul Qomariah; Fuad Luky Atmaja
CONSISTAN (Jurnal Tadris Matematika) Vol 4 No 01 (2026): Consistan : Jurnal Tadris Matematika
Publisher : Program Studi Tadris Matematika Fakultas Tarbiyah Institut Agama Islam Al-Qolam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35897/consistan.v4i01.2584

Abstract

This study aims to develop a flipbook-assisted e-LKPD based on the Realistic Mathematics Education (RME) approach on social arithmetic material to facilitate the mathematical literacy skills of seventh-grade junior high school students. This study employed a Research and Development (R&D) method using the 4-D development model, which consists of the define, design, develop, and disseminate stages. However, this study was limited to the develop stage because the research focused on the process of designing, validating, and revising the product to produce teaching materials that are feasible for use based on expert assessments. The research subjects consisted of two expert validators, namely a media expert and a material expert, as well as three seventh-grade junior high school students in a small-scale trial to determine the readability, clarity of content, and ease of use of the e-LKPD before it is implemented on a wider scale. The research instruments included media expert validation questionnaires, material expert validation questionnaires, and student response questionnaires using a Likert scale. The data analysis technique used descriptive quantitative analysis by calculating the percentage of product validity and practicality results. The results showed that the flipbook-assisted e-LKPD based on RME obtained a media expert validation percentage of 90.6% with a “very valid” category and a material expert validation percentage of 88.5% with a “very valid” category. In addition, the practicality test result obtained a percentage of 77.7% with a “practical” category. Student learning outcomes also showed an average score of 83.6 in the “good” category. Therefore, the flipbook-assisted e-LKPD based on RME is considered valid, practical, and feasible to be used as digital teaching material to support mathematics learning and has the potential to facilitate students’ mathematical literacy skills in social arithmetic material.
Self-Interest Siswa Terhadap pembelajaran Matematika : Studi Kuantitatif Pada Siswa Kelas 9 SMP Ta’mirul Islam Surakarta Nazwa Afrilia Soliha; Fuad Luky Atmaja
Griya Journal of Mathematics Education and Application Vol. 6 No. 3 (2026): September 2026
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v6i3.1272

Abstract

This study aimed to determine the level of self-interest of ninth-grade students at SMP Ta’mirul Islam Surakarta toward mathematics learning. In this study, self-interest refers to students’ internal interest in mathematics learning, which is distinct from motivation and self-regulated learning and is measured through the Four-Phase Model of Interest Development. This study employed a quantitative approach using a descriptive method. The subjects were 35 ninth-grade students selected through purposive sampling. Data were collected using an eight-item Likert-scale questionnaire, which was tested using the Product Moment Pearson validity test and the Cronbach’s Alpha reliability test. Scores were categorized as high, moderate, or low based on the sample mean and standard deviation (mean ± 1 SD). All items were valid because the rcount values were higher than the rtable value of 0.334, and the Cronbach’s Alpha value was 0.612. The mean score was 42.6571, with a minimum of 35.00, a maximum of 50.00, and a standard deviation of 3.32498. These results place students’ self-interest in the moderate category, with relatively homogeneous scores. Among the four phases, emerging individual interest had the highest percentage and triggered situational interest the lowest. Because the sample was purposive, the findings describe the sampled students and cannot be generalized to all ninth-grade students.
HUBUNGAN SELF EFFICACY DENGAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA PADA MATERI BARISAN DAN DERET SISWA KELAS XE DI MAN 1 KARANGANYAR Faradiba Saroh; Fuad Luky Atmaja
PHI: Jurnal Pendidikan Matematika Vol 10, No 2 (2026): EDISI OKTOBER, 2026
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/phi.v10i2.692

Abstract

This study aimed to examine the relationship between self-efficacy and mathematical problem-solving ability in the topic of sequences and series among Class XE students at MAN 1 Karanganyar. A quantitative approach with a correlational research design was employed in this study. The population consisted of 34 students from Class XE at MAN 1 Karanganyar, all of whom were selected as the sample using the total sampling technique. The research instruments included a self-efficacy questionnaire based on a Likert scale and a mathematical problem-solving test in the form of essay questions developed according to Polya’s problem-solving indicators. Data were analyzed using RStudio software through validity, reliability, Tetests. The correlation analysis revealed a correlation coefficient of 0.742 with a significance value of 0.000 < 0.05, indicating a positive and significant relationship between self-efficacy and students’ mathematical problem-solving ability. The findings further showed that students with higher self-efficacy tended to demonstrate better performance in understanding problems, formulating solution strategies, implementing problem-solving procedures, and reviewing their answers. This study is expected to provide a theoretical contribution to the development of research on affective factors in mathematics education and a practical contribution for teachers in designing learning activities that enhance both students’ self-efficacy and mathematical problem-solving ability.
Co-Authors Annisa Nur Azizah Aprilia Wafik Asisha Faradiba Saroh Melvin Natalia Dwianggraeni Nazwa Afrilia Soliha Rulia Nurul Qomariah Zulfa Nur Jannah