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Dadang Juandi

Universitas Pendidikan Indonesia

Author-ID : 293073

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Nursing Physics Public Health Social Sciences Transportation Other

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Articles

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Discovering Ethnomathematics in Sundanese Gamelan: Explore Mathematics Aspect in Gamelan Supriyadi, Edi; Turmudi, Turmudi; Dahlan, Jarnawi Afgani; Juandi, Dadang; Sugiarni, Rani
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 8, No 3 (2024): July
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v8i3.21768

Ethnomathematics is important in recent decades, specifically in the production of gamelan instruments. Therefore, this research aimed to examine the intricate relationship between mathematics and cultural craftsmanship in Sundanese gamelan instruments made at Gong Factory in Bogor, West Java. Ethnographic methods were used to observe and describe the practices of gamelan craftsmen and the data collection process comprised carefully selected artists. These individuals actively acquire data by reviewing relevant material, observing, analyzing, and interviewing. Miles and Huberman's framework for data analysis included data reduction, presentation, inference, and verification. The procedures understood the delicate relationship between mathematics and culture in the investigated setting. The results showed that Gong Factory in Bogor preserved and promoted a unique musical heritage. Furthermore, the instruments were known for exceptional sound quality, serving as cultural relics and didactic tools, as well as teaching visitors about the manufacturing process. The factory preserved culture through the manufacture of gamelan instruments including gong, bonang, and saron. In this context, the craftsmanship used mathematical principles, specifically precise proportions and ratios. The instruments' visual and auditory qualities depended on geometry. The results significantly impacted mathematics education by enhancing cross-cultural connections, improving proportional reasoning and mathematical comprehension, and recognizing the wider relevance of principles. Culture, mathematics, and education were connected, showing that conserving Indonesian musical tradition benefited local and global populations.

Differences in the Improvement of Statistical Reasoning Ability Based on Students' Self-Regulated Learning Level in Online Learning Using LMS Jauhari, Afifah Latip Rasyid; Herman, Tatang; Juandi, Dadang; Negara, Habibi Ratu Perwira
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 7, No 4 (2023): October
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v7i4.16830

In the literature, studies on technology-supported learning, especially using LMS, have been widely carried out during a pandemic. However, little is known about LMS, which is interesting and helps to develop students' statistical reasoning abilities for online learning by considering the students' Self-Regulated Learning (SRL) levels (High, medium and low). This study aims to examine and analyze the differences in statistical reasoning abilities of students who study using LMS in terms of SRL levels (high, medium and low). This study uses a quantitative method with the type of One-group pre-test post-test design. What took sampled randomly at the University of Pasundan Bandung, totalling 54 third-level students of Pasundan University Bandung, Indonesia. Research data related to statistical reasoning abilities were collected through a test consisting of six questions. In contrast, SRL level data were collected using a questionnaire consisting of 46 question items. Paired t-test and One-way ANOVA analysis were applied to answer the research hypothesis. The results of the study concluded that students studying with LMS with High SRL obtained a higher increase in statistical reasoning ability than students studying with LMS with Medium and low SRL categories, with the criteria for improvement in the three categories being in the high and medium improvement categories. Research findings related to learning using LMS can be used as an alternative learning model in online learning situations.

The Effect of Realistic Mathematics Education in Enhancing Indonesian Students' Mathematical Reasoning Ability: A Meta-Analysis Ariati, Chelsi; Juandi, Dadang; Hasanah, Aan; Suparman, Suparman
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 7, No 2 (2023): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v7i2.12493

Many researchers have carried out meta-analysis studies related to realistic mathematics education (RME) to enhance mathematical ability. However, their research does not focus on mathematical reasoning ability (MRA). This study aims to estimate and examine the effect of RME implementation in enhancing the MRA of Indonesian students, as well as to explore the moderating factors that influence students' heterogeneous MRA. The meta-analysis examined twenty-five relevant primary research published in national and international journals and sessions between 2010 and 2022. The steps of this research are formulate the problem, inclusion criteria, literature search strategy, study selection, data extraction, statistics analysis, interpretation and reporting. To calculate the effect size, the analytical tool employed the Comprehensive Meta-Analysis (CMA) program using the Hedge formula. Based on the random effect model, the total RME implementation had a very high effect (g = 1,064; p<0,05), significantly enhancing the MRA of Indonesian students. Furthermore, class capacity, educational level, and technological assistance did not influence students' heterogeneous MRA in the RME. These findings imply that Indonesian math educators should consider RME as one of the best ways to implement mathematics learning in the classroom to enhance students' MRA.

Realistic Mathematics Education in Indonesia and Recommendations for Future Implementation: A Meta-Analysis Study Tamur, Maximus; Juandi, Dadang; Adem, Angela Merici G.
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 4, No 1 (2020): April
Publisher : Universitas Muhammadiyah Mataram

This meta-analysis study aims to investigate the effectiveness of applying realistic mathematics education (RME) in Indonesia to students' mathematical abilities. This study analyzes 95 effect sizes from 72 studies that have been published in national and international journals or proceedings from 2010 to 2019. Comprehensive Meta-Analysis (CMA) software is used to aid analysis. As a result of the study, the overall effect size was 1.104, with a standard error of 0.065 according to the random-effects model. These results indicate that the average person who is ranked 13th in the experimental group is equivalent to those who are ranked 4th in the control group. This research was carried out by considering four characteristics, resulting in significant differences in terms of sample size and duration of treatment. Thus the application of RME in Indonesia is very effective in improving students' mathematical abilities by considering the sample size and duration of treatment.

Hypothetical Learning Trajectory in Scientific Approach on Material Direct Proportion: Context of Rice Farmers' Activities Pandanwangi Cianjur Sugiarni, Rani; Herman, Tatang; Juandi, Dadang; Supriyadi, Edi
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 6, No 4 (2022): October
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Rice farmer activities can be used as a context for understanding mathematical concepts. There are many studies on Hypothetical Learning Trajectory (HLT) on direct proportion material with a cultural context background. However, there is no research that focuses on using the context of Pandanwangi rice farmers to facilitate students in understanding material in direct proportion.This study aims to design Hypothetical Learning Trajectory (HLT) in Scientific Approach on Material Direct Proportion in the Context of Rice Farmers' Activities in Pandanwangi Cianjur, who are familiar with student culture in Cianjur. This research is part of design research. The research design consisted of HLT, namely learning objectives, learning activities, and student learning hypotheses. The result of the research is the set of HLT in the context of Pandanwangi Rice Farmer Activities, which includes learning objectives, learning activities, and the assumptions of each activity. This HLT can be a promising solution to overcome students' difficulties in understanding the concept of direct proportion and values in a cultural context to improve students' character.

The Effect of Problem-Based Learning (PBL) Model On Mathematical Communication Skills of Junior High School Students – A Meta-Analysis Study Susanti, Nipa; Juandi, Dadang; Tamur, Maximus
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 4, No 2 (2020): October
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v4i2.2481

This study aims to integrate research findings on the effect of the Problem-Based Learning (PBL) model on the mathematical communication skills of junior high school students in Indonesia since 2014. The research method used is a meta-analysis with many samples studied, namely 12 published articles. The sampling technique used was purposive sampling. The effect size transformation is based on the g hedge equation calculated using the Comprehensive Meta-Analysis (CMA) application. Based on the results of the analysis, the combined effect of PBL on mathematical communication skills is 0.791, with the high influence criteria according to the random-effect estimation model. There are four criteria considered, namely, sample size, year of study, source of journal publication, and grade level. The results of the heterogeneity test seen based on the variables studied showed that the effect of the PBL learning model was not significantly different from the three moderator variables in terms of sample size, year of study, and publication journals and very different in terms of grade level. This finding is surprising because the random-effects model, as determined by the heterogeneity test, showed variation between effect sizes. Only one of the four variables causes this variation. Therefore further research is needed, which includes more studies and the characteristics studied to describe it more accurately.

Co-Authors ., Mahmudin ., Turmudi A, Abdul Wahab Aan Hasanah Aan Hasanah Abdul Rosyid Abdul Wahab A Adem, Angela Merici G Adem, Angela Merici G. Adi Nurjaman, Adi Adirakasiwi, Alpha Galih Afidatunisa, Shera Afifah Latip Rasyid Jauhari Aflich Yusnita Fitriana Agna Ilma Taofik Ahbi Mahdianing Rum Ahmad Badawi Ahmad Lutfi Fauzi Ahmad Mukhibin Aisyah Aisyah Al Jupri Alifulloh, Wenda Amelia Defrianti Putri Andhin Dyas Fitriani, Andhin Dyas Andini Dwi Rachamwati Andini Dwi Rachmawati Andini Dwi Rachmawati Aneu Pebrianti Angela Merici G Adem Angela Merici G Adem Anjar Yogaswara Anton Nasrullah, Anton Anwar Anzani, Vera Ardhi Prabowo Ariany, Riva Lesta Ariati, Chelsi Aridanthy, Vanya Arifin Riadi, Arifin Aristika, Ayu Asri Ode Samura Astri Wahyuni Aswin Aswin Asyifa Rahmawati Aulia Adytia Putri Aulia Khairunnisa Azhar Majid Hidayat Aziiza, Yushilatu Felayati Baharuddin Paloloang Bambang Apiv Bambang Avip Priatna Martadiputra cakrawala Bana G. Kartasasmita Bobbi Rahman Buhaerah Buhaerah Buhaerah Buhaerah, Buhaerah Bulubaan, Santy Bulubaan, Santy Cece Kustiawan Chandra, Fitriana Eka Chelsi Ariati Chen, Jihe Cipta, Eliva Sukma Dadan Dasari Darhim Darhim Dela Ambarwati Devita Anjarwati Dewanto, Stanley Dewi Fitriyani Dewi, Niken Shofiana Dewi, Rivani Adistia Dian Fitriana Dian Fitriana Dian Nopitasari Dian Rusdiana Dian Usdiyana Dian Usdiyana Didi Suardi Didi Suhaedi Didi Suryadi Dika Faiz Himmawan Dui Kurniasih Dwi Agusantia Dwiningrum Prihastiwi, Dwiningrum Dzulfikar, Ahmad Edi Irawan Edi Supriyadi Edi Supriyadi Elah Nurlaelah Elah Nurlaelah Elah Nurlaelah Elmawati, Elmawati Elsa, Hanne Ayuningtias Endang Cahya Mulyaning A. Endang Mulyana Endang Sri Rahayu Endang Sri Rahayu Enjun Junaeti Entit puspita Eris Iswara Erma Monariska Fadillah, Idris Faizah Nurwita Farah Ayyun Taqiya Farida Daniel Fatimah, Siti Fauzi, Ahmad Lutfi Fauziah Fakhrunisa, Fauziah Fauziah, Ratu Sarah Febi Tasya Ramadhanti Febrinna Marchy Finola Marta Putri Fitri Aida Sari Fitriana, Laila Fitriani Agustiana Freddy Prasetyo Fuji Azzumar Gida Kadarisma Gida Kadarisma Gunadi, Farid Habibi Ratu Perwira Negara Hadi Hadi Hafilah, Putri Hamdan Sugilar Hanne Ayuningtias Elsa Harun Abdul Rohman Hasanah, Nur Riski Hayatun Nufus Hayuningrat, Silfia Hendriyanto, Agus Herayanti Herayanti herayanti herayanti Hermanto Hesty Marwani Siregar Hidayat, Toni I Made Suarsana I Made Suarsana Idris Fadillah Ifa Fathiyah IIK NURHIKMAYATI Iik Nurhikmayati Ika Dhian Lestari Ikbal Pauji Ilham Muhammad Ilham Muhammad Imelda Verina Inayah, Sarah Inggrid Marlissa, Inggrid Iryana Muhammad Ismail, Mochamad Tubagus Isna Rafianti Istikomah, Endang Iswara, Eris Izzati, Lihar Raudina Jarnawi A. Dahlan Jarnawi Afgani Dahlan Jarnawi Afgani Dahlan Jasmine Salsabila Lutfi jauhari, Afifah Latip Rasyid Jaya Dwi Putra Jaya Dwi Putra, Jaya Dwi Jerito Pereira Junaeti, Enjun Kadarisma, Gida Kartika Yulianti Khairunnisa Khairunnisa Khairunnisa Khairunnisa Khoirunnisa, Azizah Nurul Krida Singgih Kuncoro Kristiani, Yasinta Dian Kurniawan, Surya Kurniawati, Lia Kurniawati, Ririn Kusnandi Kusnandi Kusnandi Kusnandi Kusnandi Kusnandi, Kusnandi Kusuma, Yaya S Kusumah, Y S Laila Fitriana Laili Rahmawati Laili Rahmawati Laili Rahmawati, Laili Lethulur, Nelma Dortje Lia Halimatus Sadiah Lucky Heriyanti Jufri, Lucky Heriyanti Lukman Lukman hakim muhaimin M. Ikhsan Maharani, Permata Putri Mahmudi Mahmudin Mahmudin Mahpudin, Asep Marasabessy, Rosida Marhami Marhami Marhami Marhami, Marhami Masitoh, Lisda Fitriana Maulida, Aya Shofia Mefiana, Syifa Ananda Meicindy Jeny Klorina Meinarni, Welli Mitrayana Mitrayana Morin, Shelly Muchlis, Effie Efrida Muchlis, Effie Efrida Muchsin, Sitti Busyrah Muhaimin, Lukman Hakim Muhamat Hidayatul Ridho Muhammad Azhari Panjaitan Muhammad Fachri B Paloloang Muhammad Fajar Anugrah Muhammad Ridha Muhammad Zaki Mursidah Mursidah Mutiara Pertiwi N. Nurjanah Nabila Cynthia Rayhan Nadiatun Firda Nadiatun Firda Nanang Priatna Nar Herrhyanto Nia Gardenia Nia Kania Nike Astiswijaya Niken Shofiana Dewi Nilah Karnilah Noor Annisah Sholehah Nora Susilowaty Norma Septiani Novita Fatmiyati Nuke Fitri Yanuari Nunu Nurhayati Nur Anwar Nuralam, Humam Nurfiqih, David Nurjanah Nurjanah Nurjanah Nurkamilah, Milah Nurmala Setianing Putri Nurul Farida Nusrotul Bariyah Pahmi, Samsul Palupi Sri Wijayanti Palupi Sri Wijayanti, Palupi Sri Pamarna, Agustine Dwi Kurniawati Pebrianti, Aneu Peni Anggareni Peni Fauziah Puadah PRASETYAWAN, ENGGAR Puji Savvy Dian Faizati Pujia Siti Balkist Purnamasari, Sinta Putra, R Andika Putri Fitriasari, Putri Putri Wahyuni Putri, Amelia Defrianti Putri, Cyndana Kartika Putri, Nadyati Putri, Nadyati Qania Agustika Siagian Qania Agustika Siagian Qirom, Muhamad Syahidul Rachmawati, Andini Dwi Rachmi, Cut Nadia Racmi, Cut Nadia Rahmah Johar Rahmat Kusharyadi Ramdani Miftah Rani Martalisa Taorina Rani Sugiarni Rani Sugiarni Ratna Sariningsih Ratri Isharyadi, Ratri Ratu Ilma Indra Putri Ratu Sarah Fauziah Iskandar Ratu Srah Fauziah Rayhan, Nabila Cynthia Reni Nuraeni, Reni Resy Nirawati Reza, Hazim Saputra Filia Rhona Febriany Sary Riastuti, Ade Ricki Yuliardi Rika Mulyati Mustika Sari Rima Aksen Cahdriyana Rina Anggraeni Rina Anggraeni, Rina Rinda Arista Rindi Antika Riska Novia Sari, Riska Novia Ristiana, Muhammad Ghiyats Riva Lesta Ariany Rizal Aminulloh Rizki Ramadhani Rizki Ramadhani Rizky Rosjanuardi Rizqi Amaliyakh Sholikhakh Roesdiana, Lessa Rohimah, Siti Maryam Rosida Marasabessy Roskawati Roskawati RR. Ella Evrita Hestiandari Saddam Al Aziz Sahara, Sani Said Husain, Sharifah Kartini Saiman Saiman Sani Sahara Sardin Sari Herlina Sari Herlina Sari Herlina Sari Herlina Sari Herlina Sari Herlina Sari, Fitri Aida Sari, Yulina Kartika Septian, Ari Septian, Teddy Shelly Morin Siagian, Qania Agustika Simanjuntak, Petris Sinta Purnamasari, Sinta Siska Firmasari Siska Firmasari Siswanto, Rizki Dwi Siti Aisyah Siti Fatimah Siti Julaeha Sitti Nur Astuti S Sri Yulianti Sufyani Prabawanto, Sufyani suhandri, suhandri Suhendra Suhendra Suhendra Suhendra Suhendra, S sukri Sukri, sukri Sulistiawati Sulistiawati Sulistiawati Sulistiawati Sulistiawati Sulistiawati Sulistiawati Sulistiawati Sumanang Muhtar Gozali Sumarni, Enung Suparman Suparman Suparman Suparman Suparman Suparman Suparman Suparman Suparman Suparman, Suparman Surya Kurniawan Surya Kurniawan Susanti, Nipa Sutomo, Woro Anglia Banda Syafdi Maizora Syafdi Maizora Syafrianto Syafrianto Syaiful Syaiful . Syaiful Syaiful Syamsul Arifin Syaputra, Muhammad Rizky Syifa Ananda Mefiana Syifa Syafira Al Ghifari Talisadika Serrisanti Maifa Tama, Bayu Jaya Tamur, Maximus Taofik, Agna Ilma Tatang Herman, Tatang Taufiqulloh Dahlan Thesa Kandaga Tia Purniati Tia Purniati Tia Purniati Tonra, Wilda Syam Tri Aprianti Fauzia Tri Aprianti Fauzia Tupamahu, Pieter Zakarias Turmudi Ully Hidayati Veni Saputri Veni Saputri Vera Anzani Vera Anzani Vita Nova Anwar Vita Nova Anwar Vos, Hans Wahab A, Abdul Wahyu Hidayat Wahyu Setiawan Wahyu Widyastuti Wahyu Widyastuti Wahyudin Wahyudin Wahyudin Wahyuni, Reni Wardat, Yousef wawan kusmawan Widya Dwiyanti Willy Abdul Ghany Wiwin Iriani Woro Anglia Banda Sutomo Yaya Kusumah Yaya S Kusuma Yaya S. Kusumah Yaya S. Kusumah Yaya Sukjaya Kusumah Yohannes Yohannes Yohannes Yohannes Yuliardi, Ricki Yullys Helsa Yunita Yunita Yushilatu Felayati Aziiza Zaenal Arifin Zatman Payung

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Journal : JTAM (Jurnal Teori dan Aplikasi Matematika)