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All Journal Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) HISTOGRAM: Jurnal Pendidikan Matematika JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) J-PiMat : Jurnal Pendidikan Matematika Jurnal Padegogik Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika ABSIS : Mathematics Education Journal JP2D (Jurnal Penelitian Pendidikan Dasar) UNTAN LINEAR: Journal of Mathematics Education Hipotenusa: Journal of Research Mathematics Education (HJRME) Uninus Journal of Mathematics Educations and Science (UJMES) Al-'Adad: Jurnal Tadris Matematika Jurnal Matematika Ilmiah Universitas Muhammadiyah Kuningan
Ressy Rustanuarsi, Ressy
IAIN Pontianak
Arts Humanities Computer Science & IT Decision Sciences, Operations Research & Management Education Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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ANALISIS KESALAHAN PESERTA DIDIK DALAM MENYELESAIKAN SOAL MATEMATIKA REALISTIK MATERI ALJABAR BERDASARKAN TIPE KASTOLAN Selvie, Selvie; Zulkarnain, Zulkarnain; Rustanuarsi, Ressy
Bahasa Indonesia Vol 3 No 2 (2024)
Publisher : IAIN Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24260/add.v3i2.3501

Abstract

Penelitian ini bertujuan untuk mendeskripsikan kesalahan peserta didik dalam menyelesaikan soal matematika realistik materi aljabar berdasarkan tipe Kastolan serta mengindentifikasi penyebab kesalahan tersebut. Penelitian ini termasuk penelitian kualitatif dengan bentuk studi kasus. Sumber data dalam penelitian ini adalah peserta didik kelas VII C SMPN 23 Pontianak tahun pelajaran 2023/2024 berjumlah 31 peserta didik. Selanjutnya, dipilih 9 peserta didik secara purposive sampling sebagai subjek penelitian untuk diwawancarai. Teknik pengumpulan data dalam penelitian ini yaitu tes dan wawancara. Analisis data yang digunakan dalam penelitian ini meliputi kondensasi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan kesalahan peserta didik dalam menyelesaikan soal realistik materi aljabar berdasarkan tipe Kastolan oleh sebagai berikut: 1) kesalahan konseptual meliputi kesalahan mengungkapkan kembali konsep, kesalahan mengilustrasikan soal ke model matematika, kesalahan menggunakan sifat operasi aljabar, dan kesalahan mengaplikasikan konsep operasi aljabar; 2) kesalahan prosedural meliputi penyelesaian yang tidak lengkap, langkah penyelesaian tidak beraturan, dan tidak menyelesaikan soal sampai akhir; dan 3) kesalahan teknik meliputi kesalahan berhitung, dan kesalahan penulisan. Penyebab peserta didik melakukan kesalahan diantaranya karena belum menguasai materi prasyarat aljabar, belum menguasai materi aljabar, tidak memahami maksud soal, tidak terbiasa mematematisasikan masalah, tidak memeriksa kembali jawaban, tidak termotivasi mendapatkan nilai yang bagus, peserta didik sama sekali tidak memahami materi aljabar, kurang teliti, tidak fokus menyelesaikan soal, dan tidak sempat memeriksa kembali jawaban.
PERAMALAN ANGKA INFEKSI SIFILIS MELALUI TRANSFUSI DARAH DI KOTA PONTIANAK DENGAN FUZZY INFERENCE SYSTEM Nur Azizah; Ressy Rustanuarsi
JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan Vol 3 No 1 (2017): Edisi Vol. 3 No. 1 Mei
Publisher : Program Studi Pendidikan Matematika STKIP Muhammadiyah Kuningan

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Abstract

This study aims to forecast the number of syphilis infections through blood transfusion in Pontianak by using the Fuzzy Inference System with Mamdani method. Data on the number of syphilis infections are divided into two, namely training data (TRD) and checking data (CHD). Data on the rates of syphilis infection in month t-2 and month t-1 are used as inputs, while data in t month are used as output. 20 rules are formed in this system. The Mamdani method is used for inference and the centroid method is used for defuzification. The results of this study indicate that the Fuzzy Inference System with Mamdani method can be used to forecast the rate of syphilis infection with an error rate of TRD of 14.4% and CHD of 34.8%.
ETNOMATEMATIKA: EKSPLORASI KONSEP GEOMETRI TRANSFORMASI PADA KAIN TENUN LUNGGI SAMBAS Ainiyyah, Uray Tantri; Rustanuarsi, Ressy
Hipotenusa Journal of Research Mathematics Education (HJRME) Vol 8, No 1 (2025): Hipotenusa Journal of Research Mathematics Education (HJRME)
Publisher : Universitas Muhammadiyah Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36269/hjrme.v8i1.3137

Abstract

The connection between mathematics and local culture is often underutilized in education, even though cultural elements can serve as rich contextual resources for understanding mathematical concepts. This study aims to identify the concepts of geometric transformations embedded in the Pucuk Rebung motif of Lunggi Sambas woven fabric. The research employs a qualitative approach with an exploratory design. The researcher acted as the key instrument in this study, and data were collected through observation, documentation, and literature review. Data analysis techniques included data collection, data condensation, data presentation, and conclusion drawing. The findings reveal that the Pucuk Rebung motif in Lunggi Sambas woven fabric contains geometric transformation concepts, such as reflection, translation, and rotation. Therefore, Lunggi Sambas woven fabric can be integrated into the learning process to enhance meaningful learning and serve as a resource for teaching mathematics, particularly in the topic of geometric transformations.
Analisis Pendahuluan Pengembangan LKPD Berbasis Etnomatematika pada Materi Segi Empat dan Segitiga Hidayu Sulisti; Handayani, Lita; Rustanuarsi, Ressy
Jurnal Padegogik Vol 8 No 1 (2025): Jurnal Padegogik, Januari 2025
Publisher : LPPM Universitas Advent Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35974/jpd.v8i1.3724

Abstract

LKPD (Ethnomathematics Based Learner Worksheets) has great potential to improve the quality of mathematics learning. However, many LKPDs made by teachers in schools have not been related to the surrounding culture. This article aims to present an initial overview of the development of ethnomathematics-based LKPD. The model used in this research is the Plomp model which consists of 3 stages, namely Prelimenary research (preliminary analysis), Prototyping phase (development or prototyping), and Assessment phase. Due to limited funds and time, this research was carried out only up to the Preliminary Analysis stage. The subjects of this research were students of class VIII of SMP Negeri 05 Sungai Kakap. The first data was obtained from interviews with students, and the second data was obtained from the results of a questionnaire distributed to students. The results of the needs analysis, curriculum analysis, concept analysis, and analysis of the characteristics of students can be concluded that, it is necessary to develop Ethnomathematics-based LKPD on the Quadrangle and Triangle Material, which contains student activities in finding concepts that begin with a problem related and close to the daily lives of students, as well as with language and presentation according to the characteristics of grade VII junior high school students.
Pemanfaatan Software GeoGebra dalam Materi Geometri Analitik untuk Siswa Kelas XI: Survey terhadap Respon Siswa Desty Septianawati; Zulkarnain; Ressy Rustanuarsi
Absis: Mathematics Education Journal Vol 7 No 1 (2025): Mei 2025
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/absis.v7i1.6319

Abstract

Analytic geometry is a branch of mathematics that requires a deep understanding of concepts, yet it often poses significant challenges for high school students. This study aims to describe students' responses to the use of GeoGebra software in learning mathematics, specifically in the context of analytic geometry. Employing a descriptive method with a quantitative approach, the research was conducted with a population of 150 eleventh-grade students from SMA Negeri 10 Pontianak. A sample of 75 students was selected using random sampling techniques. Data were collected through questionnaires and analyzed using descriptive statistics. The findings revealed that students responded very positively to the use of GeoGebra software in the learning process of analytic geometry. All participants reported that the software enhanced their understanding of analytic geometry concepts, particularly in terms of visualization. Furthermore, nearly all students expressed their intention to continue using GeoGebra and recommended it to others, citing its user-friendly interface and its ability to make learning more engaging and interactive. This study highlights the potential of GeoGebra as an effective tool for improving the teaching and learning of analytic geometry.
ETNOMATEMATIKA: IDENTIFIKASI UNSUR GEOMETRI PADA PERISAI SUKU DAYAK DI KALIMANTAN BARAT Alvionita, Veni; Rustanuarsi, Ressy
Al-'Adad: Jurnal Tadris Matematika Vol. 4 No. 1 (2025)
Publisher : IAIN Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24260/add.v4i1.4526

Abstract

This study aims to identify mathematical elements, particularly geometric concepts, found in the shields of the Dayak tribe from West Kalimantan. This research employs a qualitative method with a descriptive exploratory approach. Data were collected through literature review and document analysis. Data analysis followed the interactive model of Miles and Huberman, which consists of four stages: data collection, data condensation, data display, and conclusion drawing. The findings reveal that the Dayak shields from West Kalimantan contain various geometric elements, including rectangles, isosceles triangles, reflectional symmetry, circles, reflection transformations, and translation transformations. This finding indicates that the Dayak shield from West Kalimantan not only holds significant historical and cultural value but also has the potential to be utilized as a resource for learning geometry.
Spatial ability and learning achievement in transformation geometry: A correlation study Rustanuarsi, Ressy
LINEAR: Journal of Mathematics Education Vol. 6 No. 1 (2025): Volume 6 Nomor 1 June 2025
Publisher : Fakultas Tarbiyah dan Ilmu Keguran IAIN Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32332/c7qx3x93

Abstract

Spatial ability is one of the essential factors for individuals' success in learning geometry. However, limited studies have specifically explored the extent to which spatial ability affects students' achievement in transformation geometry. This study aims to investigate the correlation between spatial ability and the learning achievement of mathematics education students in transformation geometry courses.  A quantitative approach with a causal-correlational design was employed. The population consisted of all fourth-semester students enrolled in the Mathematics Education Study Program at IAIN Pontianak, totaling 28 students. The entire population was selected as the sample using the total sampling technique. Data on spatial ability were collected through a spatial ability test, while data on learning achievement in transformation geometry were obtained through documentation. The collected data were analyzed using descriptive and inferential statistics, including correlation analysis, t-tests, and simple linear regression analysis. The findings reveal a positive and statistically significant relationship between spatial ability and learning achievement in transformation geometry. Consequently, lecturers must design strategies that effectively accommodate and enhance students' spatial abilities. Improving spatial ability is expected to contribute positively to students' learning achievement in transformation geometry courses.
DESKRIPSI KEMAMPUAN REPRESENTASI MATEMATIS PESERTA DIDIK KELAS XI DALAM MENYELESAIKAN MASALAH MATRIKS Siti Komariah; Ressy Rustanuarsi; Yumi Sarassanti
Uninus Journal of Mathematics Education and Science (UJMES) Vol. 10 No. 1 (2025): Januari 2025
Publisher : Universitas Islam Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30999/ujmes.v10i1.3585

Abstract

This study aims to describe the mathematical representation abilities of eleventh-grade students in solving matrix problems. A qualitative approach with a case study design was employed. The research participants consisted of six students selected from a total of 29 students in Class XI MIPA 4 at SMAS Mujahidin Pontianak. Participants were chosen through purposive sampling based on three levels of mathematical ability (high, moderate, and low) with two students representing each category. The study analyzed students' representation abilities across three dimensions, namely visual, symbolic, and verbal. Data were collected through written tests and interviews. The data analysis process involved three stages: data condensation, data display, and conclusion drawing. The results revealed that students with high ability demonstrated comprehensive mastery of all three forms of representation. Students with moderate ability showed sufficient proficiency in visual and symbolic representation but had limitations in verbal representation. Meanwhile, students with low ability encountered difficulties in all three aspects. These findings suggest that teachers should design instructional strategies and tasks that promote students' abilities to make conjectures, interpret, justify, and connect mathematical ideas, thereby enhancing students' mathematical representation abilities.
Co-Authors Ade Mirza Ainiyyah, Uray Tantri Alvionita, Veni Desty Septianawati Handayani, Lita Hidayu Sulisti Holyness Nurdin Singadimedja Listari, Dita Nur Azizah Nur Indah Damayanti Sarvia Sarvia Selvie Selvie Siti Komariah Yumi Sarassanti Zulkarnain Zulkarnain Zulkarnain