Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

6.185

P-Index

This Author published in this journals

Rizky Rosjanuardi

Universitas Pendidikan Indonesia

Author-ID : 364434

Humanities Computer Science & IT Education Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Public Health Social Sciences Other

Published : 73 Documents Claim Missing Document

Claim Missing Document

Articles

2 3 4 5 6

The development of mathematics teacher professional competencies through social media Al Jupri; Rini Marwati; Ririn Sispiyati; Rizky Rosjanuardi
Jurnal Elemen Vol 8, No 1 (2022): January
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v8i1.4782

One of the competencies for mathematics teachers that needs to be developed continuously is professional competence. However, even if efforts for developing teachers’ competencies have been made formally by the government, it seems still lacking. This study, therefore, aims to develop mathematics teacher professional competencies through an informal development model using social media. This research used a qualitative method, a case study design, involving 19 mathematics teachers from various regions in Indonesia in the informal development process in the range of 2019-2021. The informal approach was carried out using question-and-answer techniques and guided discussions on mathematical problems. From the teacher development processes, 30 mathematics problems and their solutions were collected. As an illustration of this development process, this article presents five problems and their solutions, including solutions for two mathematics problems on conceptual understanding and three mathematics problems on problem-solving. We conclude that this informal approach is fruitful in helping mathematics teachers solve mathematics problems. This study implies that the teacher development process carried out in this study can be used as a model for informal teacher development by other higher education academics in their respective places.

Prospective Teachers' Perspective on the Role of Instructor in Fostering Their Mathematical Disposition Thesa Kandaga; Rizky Rosjanuardi; Dadang Juandi
Jurnal Elemen Vol 7, No 2 (2021): July
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v7i2.3269

Continuous treatment is needed in developing mathematical dispositions. Even at the higher education level, some prospective teachers still need proper treatment in developing their mathematical dispositions. This study tries to reveal instructors' role in fostering their students' mathematical disposition to better didactical situations. This study is qualitative research with a content analysis approach. The results obtained in this study indicate that the instructor's role is still needed in the classroom regardless of the students' mathematical disposition. Instructors ' expected learning role becomes diverse based on the mathematical disposition grouping between good, moderate, and less mathematical dispositions. For prospective teachers who have an excellent mathematical disposition, the instructor's role is to confirm a theorem, confirm answers to questions, and the benefits of contextual topics. For prospective teachers who have a satisfactory mathematical disposition, the instructor's role is to motivate, direct the learning, and keep the classroom conductivity. Whereas for prospective teachers deficient in mathematical disposition, the instructor's role is needed as a direct learning source, structured learning director, and an enjoyable learning rhythm.

Hypothetical learning trajectory in student’s spatial abilities to learn geometric transformation Ricki Yuliardi; Rizky Rosjanuardi
JRAMathEdu (Journal of Research and Advances in Mathematics Education) Volume 6 Issue 3 July 2021
Publisher : Department of Mathematics Education, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jramathedu.v6i3.13338

The relationship between spatial conceptions and students' spatial abilities is still rarely studied specifically, even though this is the basis for students to think in learning geometry. This paper aims to explore spatial abilities and the development of spatial ability theory, discusses the relationship between spatial conceptions in students' understanding, and how to develop HLT (Hypothetical Learning Trajectory)in transformation geometry learning. HLT design consists of three stages: initial design, experimental, and retrospective analysis. The results of HLT are then refined into LIT (Local Instructional Trajectory). Then this paper present the empirical results of the perceptions of twenty 9th grade students in one of Islamic private school in Kabupaten Kuningan, West Java, Indonesia, towards the corresponding geometric and math questions. Literature review analysis was used to analyze the retrieved articles. At the end of the paper, we explain and discuss how to apply mathematical conceptions in learning geometry. This research is expected to be a guidance for teachers to develop learning in accordance with the students' spatial thinking process in studying geometry.

PRIMITIVE IDEALS OF TOEPLITZ ALGEBRA OF ORDERED GROUPS Rizky Rosjanuardi
Journal of the Indonesian Mathematical Society Volume 14 Number 2 (October 2008)
Publisher : IndoMS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jims.14.2.55.111-119

The topology on primitive ideal space of Toeplitz algebras of totally ordered abelian groups can be identified through the upwards-looking topology if and only if the chain of order ideals is well-ordered. We describe the topology on primitive ideal space of Toeplitz algebra of totally ordered abelian groups when the chain of order ideals is not well ordered.DOI : http://dx.doi.org/10.22342/jims.14.2.55.111-119

CHARACTERISATION OF PRIMITIVE IDEALS OF TOEPLITZ ALGEBRAS OF QUOTIENTS Rizky Rosjanuardi
Journal of the Indonesian Mathematical Society Volume 18 Number 2 (October 2012)
Publisher : IndoMS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jims.18.2.112.67-71

pdf abstractDOI : http://dx.doi.org/10.22342/jims.18.2.112.67-71

Didactical Transposition within Reflective Practice of an Indonesian Mathematics Teacher Community: A Case in Proving the Pythagorean Theorem Topic Rudi Rudi; Didi Suryadi; Rizky Rosjanuardi
Southeast Asian Mathematics Education Journal Vol 12, No 1 (2022)
Publisher : SEAMEO Regional Centre for QITEP in Mathematics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46517/seamej.v12i1.132

Didactical transposition plays a pivotal role in implementing reflective practice of a mathematics teacher community. Didactical transposition is a systematic approach to examine and enhance learning materials. Didactical transposition within reflective practice is conducted collaboratively between teacher trainers and teacher participants to produce an effective didactical design in encountering student learning obstacles. Thus, the objective of this study is to portray didactical transposition process accomplished by teacher trainers and teacher participants in the implementation of teacher reflective practice in the community. This study employed a methodological framework known didactical design research. Didactical design research in accordance with a reflective framework consists of four phases which are preparation, design/reflective planning for action, design/reflective implementation in action, and design/reflective evaluation and reflection after action. Research participants encompassed a teacher trainer, thirteen teachers, and thirty students. Data collection procedures were completed by employing observation and documentation. This study resulted in a didactical design which was obtained through a didactical transposition process performed by teacher and teacher trainer participants. The study discovered that didactical design developed collaboratively through didactical transposition within reflective practice in community was proven effective in overcoming the obstacles of student learning due to learning materials. Research findings are expected to be a model of professional learning for mathematics teachers in the community.

Fine Grading pada Aljabar Matriks Irham Walidaka; Rizky Rosjanuardi; Sumanang Muhtar Gozali
Jurnal EurekaMatika Vol 8, No 2 (2020): Jurnal Eurekamatika
Publisher : Universitas Pendidikan Indonesia (UPI)

Suatu aljabar matriks atas lapangan belum tentu dapat di dekomposisi menjadi hasil jumlah langsung dari submodulnya sehingga menjadi fine graded atas suatu grup G. Dekomposisi menjadi fine graded ini ditentukan oleh grup yang digunakan. Pada kasus aljabar matriks bila digunakan grup siklik sebagai indeks dalam mendekomposisi suatu aljabar matriks menjadi aljabar yang fine graded mengakibatkan submodulnya menjadi tidak bebas linear, sehingga bukan suatu jumlah langsung. Sedangkan ketika menggunakan grup non-siklik, submodulnya bisa merupakan jumlah langsung dan memenuhi sehingga fine grading untuk aljabar matriks dapat dilakukan. Support dari suatu alajabar matriks akan membentuk subgrup dan setiap elemen tak nol di mempunyai invers.

Hubungan Antara Aljabar-C*A yang Berkaitan dengan Kata-Kata Tak Berdekorasi W pada Graf-K Muhammad Nur Hidayat Taufiqurrahman; Rizky Rosjanuardi; Sumanang Muhtar Gozali
Jurnal EurekaMatika Vol 9, No 1 (2021): Jurnal Eurekamatika
Publisher : Universitas Pendidikan Indonesia (UPI)

Isi artikel ini membahas tentang hubungan antara aljabar- yang berkaitan dengan koleksi kata-kata tak berdekorasi . Koleksi kata-kata tak berdekorasi W dipandang sebagai representasi- dari . Selanjutnya dibahas juga mengenai aljabar-C∗ yang berkaitan yang dibangun oleh dan dipandang sebagai representasi - dari , serta dikonstruksi suatu pemetaan yang bersifat isomorfisma.

An Investigation of Master Student Understanding on Mathematical Literacy Problems Al Jupri; Rizky Rosjanuardi
Jurnal Gantang Vol 5 No 1 (2020): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Indonesian government has been promoting the National Literacy Movement since 2016 to response disappointing results of the Program for International Student Assessment on literacy and mathematical literacy skills of students. This movement involves many parties, including educational universities, to prepare mathematics education students of master level, as prospective teachers or lecturers, to understand mathematical literacy. To investigate this condition, this study aims to analyze master student understanding on mathematical literacy problems. To do so, we conducted an online survey via Google Form involving 32 master students from several universities in Bandung. In this survey, each master student was called for sending two mathematics problems and solutions that considered to be literacy problems. The results revealed that 17 (53%) involved master students understand mathematical literacy problems. The most frequent category of literacy problems to appear was Change and Relationship followed by categories of Space and Shape, Uncertainty and Data, and Quantity, respectively. Another result showed that word problems seemed to be regarded as the same as mathematical literacy problems by some students. We conclude that master student understanding of mathematical literacy needs to be improved for facing future educational careers.

Mathematical Justification Research in Mathematics Education Across Grades: A Systematic Literature Review Surya Kurniawan; Rizky Rosjanuardi; Aswin Aswin
Hipotenusa : Journal of Mathematical Society Vol 4, No 2 (2022)
Publisher : Program Studi Tadris Matematika IAIN Salatiga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18326/hipotenusa.v4i2.7815

Justification is a set of responses or responses that a person gives when asked to provide mathematical reasons for the results he makes. Justification can be used as a social process in which mathematical knowledge is explained, and systematically verified based on ideas, definitions, and properties that apply in mathematics such as representations used to display concepts. Research on justification in mathematics education has been carried out for a long time. This study aims to evaluate mathematics justification studies from articles published after 2016 and before April 2022 from ERIC and Google Scholar Databases. The key questions in this study are how these articles are distributed based on year publication, country, participant, mathematics subject, method, and how to support mathematical justification. This study used a Systematic Literature Review (SLR) by Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines including inclusion and exclusion criteria and then the data were extracted, resulting in 30 studies to be reviewed. The result shows that by year of publication the articles fluctuation distributed, based on country no data from Africa and Australia was found in the databases, the participant is mostly preservice mathematics teachers, whereas only one publication studied in high school students, geometry is the most mathematics subject used in research since every grade contain this material, the method is frequently given by qualitative research with various approach, how to supporting mathematical justification is also discussed.

Co-Authors Aflich Yusnita Fitrianna Aflich Yusnita Fitrianna Aflich Yusnita Fitrianna Agustian, Muhammad Rifqi Agustian, Muhammad Rifqi Albania, Imam Nugraha Andina Aulia Rachma Anggareni, Peni Ariany, Riva Lesta Aris Hadiyan Wijaksana Aswin Aswin Aziiza, Yushilatu Felayati Azizah, Firda Bilqis Azizah, Firda Bilqis Balkist, Pujia Dadang Juandi Dadang Juandi Darhim Darhim Delsika Pramata Sari Dewi, Reza Farhania DIAN LATIFAH, DIAN Didi Suryadi Didi Suryadi Dika Faiz Himmawan Edi Irawan Elah Nurlaelah Elah Nurlaelah Endang Cahya Mulyaning A. Eneng Riska Nuraeni Entit Puspita Entit Puspita Eyus Sudihartinih Fitrianingsih, Ajeng Nur Aulia Harsa Wara Prabawa Imam N Albania Imam Nugraha Albania Irham Walidaka Ishma Fadlina Urfa, Ishma Fadlina Isnie Yusnitha, Isnie Jarnawi Afgani Dahlan Kadir, Kamaliyah Kertayasa, I Ketut Khusnul Novianingsih Lovitarani, Destiana Lovitarani, Destiana LUKMAN, LUKMAN Maknun, Churun Lu'lu'il Masta, Al Azhary Muhammad Awaludin Nasution Muhammad Fajar Anugrah Muhammad Nur Hidayat Taufiqurrahman Mulyaning Asih, Endang Cahya Mulyono, Budi Mursidah Mursidah Nadia Shabilla, Nadia Nanang Priatna Nunung Nurhidayah, Nunung Nurhayati, Aat Nurhuda Teapon Panjaitan, M. Azhari Prabawa, Harsa Wara Rachma, Andina Aulia Ratri Isharyadi, Ratri Reka Ikraami Kurniawan Rekha Bestari Martista Reni Nuraeni, Reni Rini Marwati Ririn Sispiyati Riska Novia Sari, Riska Novia Riva Lesta Ariany Rizza Lestari Rudi Rudi Rudi Rudi Sardin Solly Aryza Sufyani Prabawanto, Sufyani Sugianto, Andi Suhendra, S Sumanang Muhtar Gozali Surachman, Annisanti Surachman, Annisanti Surya Kurniawan Syafdi Maizora Thesa Kandaga Toto Subroto Wijaksana, Aris Hadiyan Yaya S Kusumah Yaya S. Kusumah Yuliardi, Ricki Yushilatu Felayati Aziiza

Title

Found 73 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 73 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 73 Documents
Search