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Penerapan Problem Posing Dengan Teknik Learning Cell Terhadap Pemecahan Masalah Matematik Siswa Zela Halida Zia; Yayu Nurhayati Rahayu; Jarnawi Afgani Dahlan
Jurnal Analisa Vol 2, No 2 (2016): Volume 2 Nomor 2 Terbit Bulan Juni Tahun 2016
Publisher : Department of Mathematics Education, UIN Sunan Gunung Djati Bandung, West Java, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ja.v2i2.5377

Matematika memiliki peran penting bagi siswa agar siswa memiliki kemampuan untuk berfikir, berkomunikasi dan memecahkan masalah serta memiliki bekal pengetahuan yang dapat digunakan dalam kehidupan sehari-hari. Tetapi berdasarkan wawancara, siswa masih acuh terhadap pembelajaran matematika terutama dalam memecahkan masalah. Oleh kerena siswa perlu dilibatkan secara aktif dengan model pembelajaran yang baru salah satunya Problem Posing. Penelitian ini untuk melihat penerapan Problem Posing dengan teknik Learning Cell terhadap pemecahan masalah matematika siswa. Metode yang digunakan adalah metode quasi eksperimen. Instrumen yang digunakan berupa lembar observasi, tes, dan angket skala sikap. Secara keseluruhan aktivitas guru dan siswa sudah mulai terbiasa melaksanakan pembelajaran Problem Posing tanpa Teknik Learning Cell. Sehingga dapat disimpulkan bahwa tidak terdapat perbedaan kemampuan pemecahan masalah matematika antara siswa yang memperoleh pembelajaran matematika menggunakan model pembelajaran Problem Posing dengan Teknik Learning Cell, model pembelajaran pembelajaran Problem Posing tanpa Teknik Learning Cell dan terdapat perbedaan kemampuan pemecahan masalah matematika antara siswa yang memperoleh pembelajaran matematika menggunakan model pembelajaran Problem Posing tanpa Teknik Learning Cell dengan model pembelajaran Konvensional.

PENERAPAN PENDEKATAN MATEMATIKA REALISTIK TERHADAP HASIL BELAJAR DAN SIKAP SISWA SMP NEGERI 2 LHOKSEUMAWE Rohaida .; Rahmah Johar; Jarnawi Afgani Dahlan
Jurnal Peluang Vol 2, No 1 (2013): Volume 1 No 2 April 2012
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (48.995 KB)

This study aims to assess the difference in learning outcomes of students who receive realistic mathematics learning approach with those who obtain the conventional one. The study is conducted using pre-test post-test control group design with the entire population of eighth grade students of SMP N 2 Lhokseumawe as sample. In this study, purposive sampling technique is used for sampling. Data collection is conducted by giving test and non- test. The test includes cognitive testing on circle after the treatment is given , and the non – testis given using questionnaire to measure students’ attitude and response towards the realistic mathematics learning. Furthermore, the statistical test used in this study is the t-test. The data also illustrates that it follows the normal curve and it is homogenous. In order to test the hypothesis using the t-test, df (degree of freedom)= n1 + n2 - 2 = 30 + 31-2 = 59. As a result, it is obtained that t t table is 3.502 1.671 . In conclusion, the study finds that 1 ) the students who receive realistic mathematics learning approach perform better on the test compare to those who do not receive the treatment (2 ) Students’ response towards realistic mathematic approach is positive

MENINGKATKAN KEMAMPUAN KOMUNIKASI MATEMATIS SISWA SMA MELALUI COOPERATIVE LEARNING TIPE STUDENT TEAMS ACHIEVEMENT DIVISION Anasrul .; Jarnawi Afgani Dahlan; Anizar Ahmad
Jurnal Peluang Vol 2, No 1 (2013): Volume 1 No 2 April 2012
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.227 KB)

The ability of mathematical communication is one of the ability that are required in the curriculum in learning mathematics in school. Weak mathematical communication skills of students is one of the problems in the learning of mathematics in high school that need to be solved . This study aims to examine the ability of mathematical communication between the students who acquire STAD model with conventional learning . This research is an experimental study with a control group study design pre-test post-test . The study population was all students of SMA Negeri 1 Tangan-tangan Class XI , while the sample taken by purposive sampling two classes is class XI IA1 as an experimental and class XI IA2 as the control class. Two kinds of instrument are used to collect the data. They are test and nontest they include the ability of mathematical communication test. While nontest consist of questionnaires of attitude scale and observation sheets. They include the ability of mathematical communication test, while nontes of questionnaires and observation sheets. To see whether the students' mathematical communication skills between gain learning STAD model is better than conventional learning group that used the t-test at the 0.05 significance level after testing prerequisites are fulfilled. Baser on the data and results of statistical tests were analyzed with Microsoft Excel 2007 to interpret students' mathematical communication skills and attitudes of students towards learning model STAD. Based on this research, it is known that: 1) The ability of mathematical communication of studend who acquire cooperative learning STAD model better than students who received conventional teaching; 2) There are differences in mathematical communication skills improvement among subgroups of low, medium and high on student learning using the model STAD so that the learning of mathematics with this model improve mathematical communication skills are not evenly for each subgroup of students. 3) Based on the analysis of attitude scale questionnaire , the students' positive attitudes towards learning mathematics with STAD model. 4) In general, the learning of mathematics by using STAD model makes the students more active in the learning time, students have much opportunity to explore his ability and help each other. 5) Barriers in implementing STAD models namely: the willingness of insufficient time, students' skills in reading comprehension and item is still low .

PROGRAM APLIKASI PENGELOMPOKAN OBJEK DENGAN METODE SELF ORGANIZING MAP MENGGUNAKAN BAHASA R Siti Kania; Dewi Rachmatin; Jarnawi Afgani Dahlan
Jurnal EurekaMatika Vol 7, No 2 (2019): Jurnal EurekaMatika
Publisher : Mathematics Program Study, Universitas Pendidikan Indonesia (UPI)

ABSTRAKAnalisis klaster merupakan salah satu teknik analisis statistika multivariat yang bertujuan untuk mengalokasikan sekelompok objek pada suatu kelompok-kelompok yang saling bebas, yang disebut sebagai klaster, sehingga objek-objek di dalam satu kelompok homogen, sedangkan objek-objek di dalam kelompok yang berbeda heterogen. Pada penelitian ini, proses analisis klaster dilakukan dengan menggunakan metode Self Organizing Map. Self Organizing Map merupakan salah satu metode dalam jaringan syaraf tiruan yang menggunakan pembelajaran tak terawasi. Akan tetapi proses pengelompokan dengan metode Self Organizing Map memerlukan waktu yang cukup lama serta dapat terjadi kesalahan dalam perhitungannya apabila dilakukan secara manual, sehingga pada penelitian ini dibuat program aplikasi untuk proses pengelompokan objek dengan metode Self Organizing Map menggunakan bahasa pemrograman R. Output dari program aplikasi tersebut berupa proses clustering yang terdiri dari hasil perhitungan tiap iterasi dan hasil pengelompokan objek yang termuat dalam lembar kerja ‘Console’ pada software R. Setelah program aplikasi selesai dibuat, kemudian diaplikasikan pada data Indeks Pembangunan Manusia Provinsi Aceh tahun 2013. Dari program aplikasi tersebut dengan menentukan terlebih dahulu klaster yang akan dibentuk yaitu 4 klaster diperoleh jumlah anggota klaster ke 1,2,3, dan 4 secara berturut-turut adalah 10, 2, 1, dan 11.Kata kunci : Analisis Klaster, Self-Organizing Map, R OBJECTGROUPING APPLICATION PROGRAM WITH SELF ORGANIZING MAP METHOD USING R ABSTRACTCluster analysis is one of multivariate analysis technique that is purposed to alocate a group of object of independent groups, the so-called cluster, so as to each object in a same group is homogeneous, whilst each object in different group is heterogeneous. In this research, the process of cluster analysis is conducted by employing Self Organizing Map method. Self Organizing Map is one of method in artificial neural network that use unsupervised learning. However, the process of grouping of Self Organizing Map took a long time and it can generate mistakes in its calculation if it is conducted manually, for that concern this research provides a program application for the grouping process with Self Organizing Map using R programming language. Output of the application program is a clustering process that consist of calculation result for each iteration and object grouping result provided in Console worksheet in R software. After the application program is completely created, finally it is applied to data of Human Development Index of Aceh province in 2013. From the application program, by first determining the cluster to be formed ie 4 clusters obtained by the number of cluster members to 1,2,3 and 4 respectively are 10, 2, 1, and 11.Key Words: Cluster Analysis, Self-Organizing Map, R-language

Students’ Perceptions of Mathematics Learning Based on Their Brain Domination Group Nadia Wardah Mumtazah; Jarnawi Afgani Dahlan; Endang Cahya Mulyaning A.
Jurnal Cendekia : Jurnal Pendidikan Matematika Vol 8 No 2 (2024): Jurnal Cendekia: Jurnal Pendidikan Matematika Volume 8 Nomor 2 Tahun 2024
Publisher : Mathematics Education Study Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cendekia.v8i2.3142

This research discusses students' perceptions of mathematics learning based on their brain dominance. Descriptive qualitative methods were used with questionnaires and interviews. The research subjects were 26 students who filled out a questionnaire in the form of a brain dominance questionnaire, with details of 6 students who were interviewed in depth. Data analysis was carried out through discourse analysis of the interview results by considering the respondent's environmental context. The results of the research show that there are differences in perception between students who are right and left brain dominant and students who use both equally. Some students have different ease and difficulties in learning mathematics, as well as different views about the benefits of this material in everyday life. Apart from brain dominance, there are several other factors that influence students' perceptions, including the way teachers teach and the learning environment. Knowing students' brain dominance is important, because it can help teachers determine how to teach material appropriately so that it gets a good perception for all students, whether they are right-brain dominant, left-brain dominant, or those who tend to be balanced. In conclusion, students' perceptions of mathematics learning can be different, depending on their brain dominance.

Improving Junior High School Students' Mathematical Understanding Ability Through Powerpoint Assisted Visual Media Rifai, Rusdian; 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

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.

Geometry in Ethnomathematics Research Publication: Bibliometric Analysis Supriyadi, Edi; Turmudi; Jarnawi Afgani Dahlan; Dadang Juandi
International Journal of Mathematics and Mathematics Education Vol. 1 No. 1 (2023)
Publisher : EDUPEDIA Publisher

This study examines the implementation of ethnomathematics in geometry, in addition to the challenges and benefits of this approach. This study also emphasizes the dearth of bibliometric studies in this area and provides a Scopus-based bibliometric analysis of research on geometry in ethnomathematics. This study examines the evolution of research publications, the most cited articles, the most prolific writers, and current trends in research. This paper uses bibliometric analysis using Rstudio Biblioshiny as its methodology. The study discovered that studying geometry from an ethnomathematics perspective provides benefits such as enhancing learning interaction activities and conceptual comprehension. However, the lack of understanding about the ethnomathematics approach and how to incorporate it into teaching geometry, the teacher's lack of knowledge about geometry content knowledge, and the teacher's aversion to change are impediments to the use of this technique. Researchers that desire to discover research gaps for future studies are anticipated to find this study's findings valuable.

BIBLIOMETRIC ANALYSIS FROM LOCAL INSTRUCTION THEORY RESEARCH Edi Supriyadi; Jarnawi Afgani Dahlan; Darhim Darhim; Dadang Juandi
Journal on Mathematics Education Research (J-MER) Vol 3, No 2 (2022)
Publisher : Departemen Pendidikan Matematika, FPMIPA, UPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/j-mer.v3i2.49316

A field known as bibliometrics is one that allows for the evaluation of different scientific publications using a variety of different indicators. The purpose of this research is to carry out a bibliometric analysis of the amount of work that has been done in the field of local instruction theory between the years 2009 and 2020. All of the journal articles that were retrieved from the Scopus database between the years 2009 and 2020 were incorporated. As bibliographic indicators, we used things like the number of publications, the most productive institutions, the type of collaboration, the most productive countries, the most cited papers, and authors who had the highest overall academic production. It is then sent to the SciVal tools in order to undergo analysis. The research on local teaching theory was drawn from a total of 29 published publications, with 50 different writers contributing to the collection of 41 citations. The most documents have been produced in Indonesia, which is the world's largest country. The institution that has the biggest scientific influence and production is Sriwijaya University, which also has the highest scientific production. Ratu Ilma Indra Putri is the author who has had the most manuscripts published throughout the course of her career. Last but not least, the majority of articles involve collaboration between institutions. Local instruction theory research is still new and hasn't made a global impact. Academics can submit relevant article citations, putting them at the forefront of the latest research.

The Influence of Mathematical Understanding, Reasoning, and Resilience on Mathematical Literacy in Karimun Regency's Eighth Graders Harahap, Ummi Fadilah; Jarnawi Afgani Dahlan; Ikhwanudin, Trisno
Jurnal Pendidikan Matematika (JPM) Vol 11 No 1 (2025): Jurnal Pendidikan Matematika (JPM)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jpm.v11i1.22396

Mathematical literacy remains a significant concern among students in Indonesia, as reflected in low scores on international assessments such as PISA and TIMSS. This study aimed to examine the impact of mathematical understanding, reasoning, and resilience on the mathematical literacy of 100 8th-grade students in public junior high schools in Karimun Regency. A quantitative approach with a survey design was employed, and data were collected using validated questionnaires and tests. The data were examined using multiple linear regression approach. The results indicated a significant positive relationship between mathematical understanding, reasoning, and resilience on students' mathematical literacy. These findings highlight the need for comprehensive teaching strategies that integrate these three aspects to effectively enhance mathematical literacy. More varied teaching methods and strong support from educators are recommended to optimize students' mathematical literacy.

Utilizing open-ended approach to enhance mathematical understanding among vocational high school students Rifai, Rusdian; Turmudi; Jarnawi Afgani Dahlan; Suhendra
Jurnal Elemen Vol 11 No 3 (2025): July
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v11i3.29711

Mathematics learning in vocational high schools is still teacher-centred and relies on structured exercises, leaving little room for students to develop a conceptual understanding. The open-ended approach can be a solution because it allows students to explore various strategies for solving mathematical problems in depth. However, its implementation in vocational high schools remains limited. This study aimed to examine the effectiveness of the open-ended approach in improving the mathematical understanding of vocational high school students. A quasi-experimental design with a pretest-posttest control group design was used. The sample consisted of 72 students in the 11th-grade of Computer and Network Engineering, selected based on previously formed classes. Data were obtained through a mathematical understanding test that measured students' ability to identify, use, and apply the concepts of sequences and series to solve everyday problems. The test instrument consisted of three essay questions, with a maximum score of four for each item. As the data were not normally distributed, the Mann-Whitney U test analysis was used. The results showed that the increase in mathematical understanding of the group of students who received the open-ended approach was significantly better than that of the group who received direct learning.

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