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All Journal KALAMATIKA Jurnal Pendidikan Matematika GAUSS: Jurnal Pendidikan Matematika Indo-Fintech Intellectuals: Journal of Economics and Business
Rizal Kamsurya
STKIP Media Nusantara Citra
Humanities Economics, Econometrics & Finance Education Mathematics Social Sciences

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THE NEWMAN PROCEDURE FOR ANALYZING STUDENTS' ERRORS IN SOLVING SYSTEMS OF LINEAR EQUATIONS Veni Saputri; Rizal Kamsurya
KALAMATIKA Jurnal Pendidikan Matematika Vol 6 No 1 (2021): KALAMATIKA April 2021
Publisher : FKIP Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.462 KB) | DOI: 10.22236/KALAMATIKA.vol6no1.2021pp31-44

Abstract

This study aimed to analyze students’ errors in problem-solving activities for systems of linear equations. The descriptive qualitative method was adopted and applied to obtain and process the research data. Research subjects were selected using the purposive sampling technique. Three participants were chosen according to their mathematical proficiency levels. Data collection was conducted by tests to measure students’ problem-solving abilities and semi-structural interviews to gather qualitative information about students’ errors in solving systems of linear equations. The interview results were analyzed using narrative analysis to obtain accurate conclusions. The study found that (1) low-ability students tend to perform error at the comprehension stage, (2) medium-ability students are likely to perform error at the transformation stage, and (3) high-ability students tend to perform error at the process skills stage. The solutions based on the ability level are: (1) low-ability students are required to read the question carefully, educators should emphasize the problem-solving procedure, and students should strengthen their understanding of the prerequisite learning content in problem-solving; (2) medium-ability students have to focus on the emphasis and development of their skills in understanding the language of a problem and balance with improving their understanding of learning content and contextual exercising; (3) high-ability students are provided with exercises that can improve their counting speed and accuracy of the subject in resolving a problem.
Desain Research: Penerapan Pendekatan PMRI Konsep Luas Permukaan dan Volum Kerucut untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis Rizal Kamsurya
GAUSS: Jurnal Pendidikan Matematika Vol. 2 No. 1 (2019)
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/gauss.v2i1.1386

Abstract

Pendekatan PMRI sebagai salah satu pendekatan yang berorientasi pada aktivitas siswa memberikan kesempatan kepada siswa untuk menemukan konsep berdasarkan pengalaman yang diperoleh dari dunia nyata. Penelitian ini bertujuan untuk mengetahui penerapan pendekatan PMRI pada pembelajaran luas permukaan dan volum kerucut untuk meningkatkan kemampuan pemecahan masalah matematis. Penelitian ini menggunakan metode design research dengan tiga tahap yaitu persiapan, eksperimen mengajar, dan analisis retrospektif. Penelitian terdiri dari 4 pertemuan dengan subjek penelitian 6 orang. Instrumen yang digunakan yaitu tes kemampuan pemecahan masalah, observasi, wawancara, rekaman suara, dan hipotesis lintasan belajar. Hasil analisis retrospektif menunjukkan bahwa penerapan pendekatan PMRI dengan menggunakan konteks “kukusang” dan “kagepe” mampu meningkatkan aktivitas dan pemahaman siswa terhadap materi luas permukaan dan volum kerucut, serta kemampuan pemecahan masalah matematis siswa. Hasil analisis data menunjukkan bahwa terdapat peningkatan kemampuan siswa dalam menyelesaikan soal pemecahan masalah disertai dengan tahapan penyelesaiannya.Kata Kunci: PMRI, Pemecahan Masalah Matematis, “Kukusang,” “Kagepe”
Dynamic non Performing Loan in Indonesia (Empirical Study on Commercial and Islamic Banks) Budi Kramadibrata; Darlin Aulia; Rizal Kamsurya; Andi Heru Susanto
Indo-Fintech Intellectuals: Journal of Economics and Business Vol. 1 No. 1 (2021): Indo-Fintech Intellectuals: Journal of Economics and Business
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.156 KB) | DOI: 10.54373/ifijeb.v1i1.14

Abstract

This paper discusses non-performing loans in Islamic and commercial banking. This study tries to test internal and external factors such as CAR (capital adequacy ratio), interest rate, ROE (return on equity), inflation rate, and GDP (gross domestic product­) against non-performing loans or NPL in Indonesia banking. It would also like to see the impact of the crisis that occurred during the period 2015 to 2020. A sample from this study consisted of 66 Banks. Results showed that of the four variables tested showed a significant influence on the NPL of commercial and Islamic banks, except on the testing of inflation and CAR variables on commercial banks that showed results did not affect the NPL.
Co-Authors Andi Heru Susanto Budi Kramadibrata Darlin Aulia Veni Saputri