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All Journal Edumatsains KALAMATIKA Jurnal Pendidikan Matematika Satya Widya JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan Range : Jurnal Pendidikan Matematika Jurnal Pengabdian Kepada Masyarakat Indonesia
Suhendra
Universitas Pendidikan Indonesia
Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Education Engineering Mathematics Physics Public Health Social Sciences

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SELF-EFFICACY SISWA SMA BERGAYA KOGNITIF IMPULSIF DALAM PEMBELAJARAN MATEMATIKA Dian Fitriana; Suhendra; Dadang Juandi
JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan Vol 9 No 1 (2023): JUMLAHKU VOL.9 NO.1 2023
Publisher : Program Studi Pendidikan Matematika STKIP Muhammadiyah Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33222/jumlahku.v9i1.2642

Abstract

Penelitian ini bertujuan untuk mengetahui tingkat self-efficacy yang dimiliki siswa bergaya kognitif impulsif dalam pembelajaran matematika. Metode yang digunakan pada penelitian ini yaitu metode deskriptif kualitatif. Subjek penelitian ini yaitu dua puluh satu siswa kelas X IPA di salah satu SMA di Kota Palembang. Instrumen tes untuk mengetahui gaya kognitif siswa menggunakan Matching Familiar Figure Test (MFFT). Instrumen non-tes self-efficacy menggunakan angket yang terdiri dari 28 butir pernyataan dengan 15 pernyataan positif dan 13 pernyataan negatif berdasarkan dimensi self-efficacy. Hasil menunjukkan bahwa sebagian besar siswa SMA kelas X IPA yang bergaya kognitif impulsif memiliki tingkat self-efficacy sedang, kemudian sisanya siswa bergaya kognitif impulsif memiliki tingkat self-efficacy tinggi. Tidak terdapat siswa bergaya kognitif impulsif yang memiliki tingkat self-efficacy rendah. Dapat dikatakan bahwa siswa bergaya kognitif impulsif memiliki tingkat kepercayaan terhadap kemampuan di dalam dirinya terhadap proses pembelajaran matematika tergolong baik. Kemudian berdasarkan persentase dimensi self-efficacy diketahui bahwa siswa bergaya kognitif impulsif dengan tingkat self-efficacy tinggi maupun tingkat self-efficacy sedang memiliki keyakinan yang baik terhadap dirinya bahwa dapat menyelesaikan keberagaman tingkat kesulitan dari suatu permasalahan dan berani mengambil resiko. Namun, siswa bergaya kognitif impulsif kurang berhati-hati sehingga hal tersebut dapat mempengaruhi hasil atau tingkat capaian siswa tersebut menjadi kurang maksimal.
EKPLORASI ETNOMATEMATIKA PADA MAKANAN TRADISIONAL MASYARAKAT MAJALENGKA Herayanti; Suhendra; Dadang Juandi
JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan Vol 9 No 1 (2023): JUMLAHKU VOL.9 NO.1 2023
Publisher : Program Studi Pendidikan Matematika STKIP Muhammadiyah Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33222/jumlahku.v9i1.2650

Abstract

Etnomatematika merupakan salah satu strategi pembelajaran yang mengaitkan unsur budaya dalam pembelajaran matematika. DI Indonesia beraneka ragam kebudayaan salah satunya yaitu dari makanan tradisional. Makanan tradisional merupakan budaya dimana di dalamnya terdapat unsur matematika. Adapun tujuan dari penelitian ini adalah untuk mengeksplorasi aspek-aspek etnomatematika pada makanan tradisional masyarakat Majalengka. Metode yang digunakan dalam penelitian ini adalah pendekatan kualitatif dengan menggunakan desain etnografi. Subjek dalam penelitian ini yaitu tokoh pembuat makanan tradisional di Kabupaten Majalengka. Hasil penelitian menemukan bahwa terdapat aspek-aspek etnomatematika pada makanan tradisional. Pada aktivitas matematis diantaranya aktivitas counting (menghitung) meliputi alat dan bahan baku yang diperlukan untuk membuat opak, menentukan harga bahan baku, menentukan harga jual dan estimasi waktu yang diperlukan; measuring (mengukur) meliputi luas lahan yang diperlukan dalam pembuatan opak; designing (mendesain) meliputi mengetahui macam-macam bentuk pada opak, merancang macam-macam bentuk pada pembuatan opak dan cetakan yang digunakan pada pembuatan opak; playing (bermain) meliputi menentukan gerak tangan; dan explaining (menjelaskan) meliputi makna/filosofi dari pembutan opak. Pada produk yaitu opak terdapat unsur matematis secara geometris ditemukan bangun datar yaitu lingkaran.
Pembelajaran Operasi Perkalian Menggunakan Metode Jarimatika dan Lidimatika Nasrul Naufal; Siti Kurnia; Aulia Khairunnisa; Lia Halimatus Sadiah; Nurul Hidayati; Chelsi Ariati; Hanne Ayuningtias Elsa; Suhendra
Jurnal Pengabdian kepada Masyarakat Indonesia (JPKMI) Vol. 3 No. 1 (2023): April : Jurnal Pengabdian Kepada Masyarakat Indonesia (JPKMI)
Publisher : AMIK Veteran Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jpkmi.v3i1.1218

Abstract

The multiplication operation is a crucial topic in learning mathematics. Nevertheless, there were still students who considered the topic to be a difficult topic, one of which was for elementary and junior high school students at the Graha Asuh Jabal 165 Foundation, Bandung Regency. These problems occur due to the learning process that is not optimal. Therefore, the purpose of carrying out this service activity is to help students or service targets understand the concept on the topic of multiplication operations which are packaged in an attractive way so that students are motivated to take part in the learning process. The method for implementing this activity consists of three stages, namely: (1) the activity planning stage; (2) implementation stage; and (3) evaluation stage. The results obtained in this service activity are in the form of student responses which indicate that students are very enthusiastic in participating in the learning process, and make it easy for students in the process of calculating multiplication operations.
Improving Junior High School Students' Mathematical Understanding Ability Through Powerpoint Assisted Visual Media Rusdian Rifai; Turmudi; Jarnawi Afgani Dahlan; Suhendra
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 9 No 1 (2024): July
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v9i1.5932

Abstract

Students typically have less interest in learning mathematics because it is still seen as a challenging subject. As a result, when compared to other disciplines, the pupils' mathematics understanding abilities remained below average. The aim of this study was to find out how employing visual aids, such as PowerPoint, to teach geometric shapes to students improved their mathematical comprehension skills. This kind of study uses a random subject posttest design and is therefore quasi-experimental. The population of this study consisted of students in class VIII SMPN 1 Pagelaran; the samples were drawn using the purposive sampling technique from students in class VIII C, which was the experimental class, and class VIII D, which was the control class. The t-test, homogeneity test, and normalcy test are the data analysis methods employed. With a significant rate of0.05, the testing results for the hypothesis produced tstat= 3.2 > ttable= 1.6801. This indicates that while Ha is acceptable, Ho is denied. This demonstrates how employing PowerPoint-assisted visual aids in mathematics instruction increases students' capacity for mathematical knowledge.
Open-Ended Approach for Critical Thinking Skills in Mathematics Education: A Meta-Analysis Yuni Fitriyah; Wahyudin; Suhendra; Hanifah Nurhayati; Tri Sedya Febrianti
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 9 No 1 (2024): July
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v9i1.5975

Abstract

There have been numerous research on developing students’ critical thinking skills through an open-ended approach in mathematics education show conflicting results. Some research results implied a strong effect; others range from moderate to modest effect. This research aims to summarize and predict the implementation of an open-ended approach to critical thinking skills in mathematics education over the last five years. This research utilized a meta-analysis using the PICOS (Population, Interventions, Comparator, Outcomes, and Study Design) approach. The sample used in this research is studies published in the form of articles and proceedings as well as theses and dissertations. The databases are sourced from Google Scholar, Crossref, and Semantic Science using the PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analyses) method, which includes 14 primary studies found during 2018-2023 in Indonesia. The results are the implementations of an open-ended approach to improve critical thinking skills in mathematics education, show an average of 1.44, which is included in the high category. Factors that influence the heterogeneity of effect sizes are study characteristics, such as sample size, year of publication, level of education, demographics, and publication type. The characteristics of the research that results in a large effect size value are an open-ended approach implemented in elementary schools, studies with a sample size of more than 30, studies that are published in 2018 and in journals, and implementation of the approach in regencies.
Implementation of Open-Ended Approach in Mathematics Learning to Improve Learning Independence of Vocational High School Students Rusdian Rifai; Turmudi; Jarnawi Afgani Dahlan; Suhendra
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 1 (2025): July
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i1.6710

Abstract

This study aims to analyze the effectiveness of mathematics learning with an open-ended approach in improving the learning independence of Vocational High School (SMK) students. This study uses a quasi-experimental method with a pretest-posttest control group design involving two groups of class XI Computer Network Engineering students (TKJ 1 and TKJ 2). The sample used was 72 students, which were divided into an experimental group and a control group. Data on student learning independence were collected through a learning independence questionnaire consisting of 36 statements that were analyzed using statistical tests with the help of the SPSS version 30 program. The results showed that the experimental group using an open-ended approach experienced a more significant increase in learning independence compared to the control group. This finding indicates that the open-ended approach is effective in improving student learning independence, which is very important in preparing them to face the dynamic world of work. However, the level of student learning independence is still in the low category, which indicates the need for the implementation of advanced strategies to further maximize the potential for student independent learning in the long term.
ANALISIS RETROSPEKTIF INTEGRASI TEKNOLOGI DALAM DESAIN DIDAKTIS MATERI BANGUN RUANG SISI LENGKUNG UNTUK SISWA SEKOLAH MENENGAH PERTAMA Tri Nova Hasti Yunianta; Didi Suryadi; Rizky Rosjanuardi; Suhendra
Satya Widya Vol. 42 No. 1 (2026)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/j.sw.2026.v42.i1.p67-83

Abstract

The aim of this study is to examine the impact and potential of innovation and quality improvement in teaching curved-surface solid geometry for junior secondary school students. This study employs a qualitative approach using Didactical Design Research (DDR) to capture classroom realities, with retrospective analysis guiding the interpretation of findings. Data were collected through questionnaires, tests, documentation, in-depth interviews, and focus group discussions. The results show that students’ knowledge acquisition is supported by three key aspects: independent exploration, the use of technology, and a coherent learning trajectory. The implemented didactical design demonstrates several strengths but also areas for improvement. Technology effectively enhances concept visualization, student participation, and understanding. However, limitations remain in the clarity of task instructions, the precision of anticipating students’ learning obstacles, and the alignment of technology use with learning objectives. Reflection and evaluation of the implementation inform revisions to the didactical design, leading to a more effective, structured, and student-centered learning approach that better meets classroom needs.
The effect of open-ended approach on enhancing mathematical understanding in vocational high school students Rusdian Rifai; Turmudi; Jarnawi Afgani Dahlan; Suhendra
KALAMATIKA Jurnal Pendidikan Matematika Vol 10 No 2 (2025): KALAMATIKA November 2025
Publisher : FKIP Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/KALAMATIKA.vol10no2.2025pp58-72

Abstract

This study aims to evaluate the extent to which the open-ended approach affects the achievement of students' mathematical understanding ability in vocational high schools (SMK). The method used was a quasi-experiment with a pretest-posttest control group design, in which two groups of students (experimental group and control group) were compared based on test results before and after treatment. The research sample consisted of 72 students who were selected by intact group (based on the class that had been formed) to minimize disruption to teaching and learning activities at school. This sampling was done by considering the real conditions in the field so as not to disrupt the existing learning schedule and class structure. The research data was obtained through a description test consisting of three questions, with a maximum score of 12 for each question. Data analysis was conducted in two stages: first, a normality test to check data distribution, and second, a mean difference test using the Mann-Whitney U test because the data were not normally distributed. The results showed that the group of students taught with the open-ended approach had better mathematical understanding achievement than the group that received direct learning. This finding indicates that the open-ended approach is effective in promoting mathematical conceptual understanding through independent exploration.
Profile of Students' Mathematical Problem-Solving Ability in View of Adversity Quotient Suci Charolina; Suhendra
RANGE: Jurnal Pendidikan Matematika Vol. 7 No. 1 (2025): Range Juli 2025
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v7i1.9445

Abstract

The Adversity Quotient (AQ) refers to individuals' ability to recognize challenges, apply their intelligence to these challenges, and turn them into problems to be solved. The low ability of students to solve mathematical problems is a major issue that needs to be analyzed more deeply from an AQ perspective. This study aims to analyze and describe students' mathematical problem-solving ability based on AQ, with the categories of climber, camper, and quitter. This qualitative research uses a case study method conducted on IX students at an SMP in Bandung, West Java. The subjects were three people who represented each AQ category. Data were collected through questionnaires, tests, and interviews. After that, the collected data were analyzed using the Miles and Huberman model, which involves the stage of data reduction, data presentation, and conclusion drawing/verification. The results of this study show that there are differences in mathematical problem-solving ability based on three categories of adversity quotient. Students in the climber category showed excellent ability to solve problems by fulfilling four problem-solving indicators: identifying problems, developing strategies, implementing strategies, and re-examining the results of the solution. Meanwhile, camper category students showed sufficient problem-solving ability by fulfilling three indicators: identifying problems, developing strategies, and implementing strategies. On the other hand, students in the quitter category showed low problem-solving ability and could only fulfill one indicator, namely identifying problems.
Exploring the Thinking Experiences of Preservice Mathematics Teachers in Learning Geometric Transformation Proofs Talisadika Serrisanti Maifa; Didi Suryadi; Siti Fatimah; Suhendra
RANGE: Jurnal Pendidikan Matematika Vol. 7 No. 1 (2025): Range Juli 2025
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v7i1.9662

Abstract

This study aimed to explore the thinking experiences of preservice mathematics teachers in learning geometric transformation proofs, focusing on four categories of thinking: personalization, contextualization, depersonalization, and decontextualization. Employing a qualitative approach with a phenomenological design, the study involved 24 preservice mathematics teachers in a mathematics education program who had completed a course on Geometric Transformations. Data were collected through written test tasks and in-depth interviews and analyzed thematically. The data analysis followed a four-stage phenomenological procedure: bracketing, to suspend researcher assumptions; intuiting, to immerse in participants’ experiences; thematizing, to identify recurring patterns; and describing, to construct a comprehensive understanding of the phenomenon. The findings identified seven key themes that reflect the thinking experiences of preservice mathematics teachers. Through an in-depth analysis of these themes, it was revealed that the participants’ reasoning predominantly remained at the stages of personalization and contextualization. Depersonalized and decontextualized thinking was not identified, suggesting that the transition toward formal and abstract mathematical reasoning had not yet occurred. The findings suggest possible cognitive obstacles experienced by preservice teachers in transitioning toward formal reasoning, based on interview responses. However, the exploration of these challenges was limited to data gathered through interviews. Future studies are recommended to conduct deeper investigations through classroom observations and analysis of instructional materials to better understand how these thinking difficulties emerge.
Co-Authors Aulia Khairunnisa Chelsi Ariati Dadang Juandi Dian Fitriana Didi Suryadi Fatimah, Siti Febrianti, Tri Sedya Hanifah Nurhayati Hanne Ayuningtias Elsa Herayanti Jarnawi Afgani Dahlan Lia Halimatus Sadiah Nasrul Naufal Nurul Hidayati Rizky Rosjanuardi Rusdian Rifai Rusdian Rifai Siti Kurnia Suci Charolina Talisadika Serrisanti Maifa Tri Nova Hasti Yunianta Turmudi Wahyudin Yuni Fitriyah