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Dadan Dasari

Univeritas Pendidikan Indonesia

Author-ID : 2838049

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

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Integral (antiderivative) learning with APOS perspective: A case study Nurhayati, Lina; Suryadi, Didi; Dasari, Dadan; Herman, Tatang
Journal on Mathematics Education Vol. 14 No. 1 (2023): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v14i1.pp129-148

The objective of this study is to determine students’ learning barriers in understanding integral concepts through their thinking processes with the perspective of APOS theory (Action, Process, Object-Scheme). This research applied qualitative research with a case study method. The samples of this research were 19 civil engineering students who had contracted calculus courses and who had been given a written test. The results of the written test were divided into three different categories – they are comprehension ability is high (score ), medium (60 Score < ) and low (score < 60). Deep interviews were conducted with three representative students who took the written test and met the criteria for each group. The results of the interviews showed that students in the high category still had conceptual ontogenic learning obstacle despite passing the APOS path. Students in the moderate category be able to reach the encapsulation stage but they had not been able to de-encapsulate it to the process. They had conceptual and epistemological ontogenical learning obstacles. Whereas the low category students had the tendency to only reach the action stage and had difficulty in doing initial de-encapsulation due to lack of learning experience in the prerequisite materials. The learning obstacles they experienced were psychological and conceptual-ontogenical learning obstacles. Aggregately, the students tended to experience conceptual ontogenic learning obstacle. The result of this study is expected to be used as a basis for designing a hypothetical learning trajectory in future research.

Textbook praxeological-didactical analysis: Lessons learned from the Indonesian mathematics textbook Yunianta, Tri Nova Hasti; Suryadi, Didi; Dasari, Dadan; Herman, Tatang
Journal on Mathematics Education Vol. 14 No. 3 (2023): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v14i3.pp503-524

The objective of textbook study is to create high-quality textbooks. Analysis was done using a praxeological-didactical analysis (PDA) method. PDA offers space to analyze curriculum materials, such as math textbooks, which are the outcome of human action in the anthropology of a specific nation's society. There are 10 types of tasks given in the mathematics textbook on measurement of spatial figures and seven techniques are identified as possible ways to complete the tasks. The justification of praxis is that there are three emerging technologies and two theories that are used as the final direction of the given task type. There is a sequence of task composition at the start with loads at level 2 and level 3 that can affect student readiness. Psychologically, it is regarded as difficult at first, which can lead to students becoming disinterested as well as bored, thus experiencing difficulties, creating ontogenetic obstacles. The other predicted learning obstacles identified in this textbook are epistemological and didactic obstacles. All the findings from this analysis can be applied to continuously raise the standard of the currently available mathematics textbooks.

Learning obstacle of probability learning based on the probabilistic thinking level Sari, Atika Defita; Suryadi, Didi; Dasari, Dadan
Journal on Mathematics Education Vol. 15 No. 1 (2024): Journal on Mathematics Education
Publisher : Universitas Sriwijaya in collaboration with Indonesian Mathematical Society (IndoMS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.v15i1.pp207-226

This study aims to determine students learning obstacles in probability material based on their probabilistic thinking (PT) level using the theory of didactical situation (TDS) perspective. This is qualitative research with the case study method. The subject consisted of 23 grade 9 students in junior high school who had studied the material and had taken the test. The test results were used to classify students depending on their PT level using the framework developed by Graha A. Jones. Furthermore, interviews were performed with three representative students from each PT level. The interviews indicated that students in each PT level continue to face learning obstacles, which include instrumental ontogenic and epistemological obstacles. The lowest PT level demonstrated a more complex and comprehensive learning obstacle in all constructs of PT. From the TDS perspective, all students who are at various levels of PT have reached an action situation. Only 33% of the students at the subjective level and 83% of the students at the transition level reached the formulation situation. Still, students at that level needed help to reach the other two situations. Unlike the two previous levels, students at the level of quantitative informal thinking can achieve situations of validation and institutionalization.

Studi Literatur: Identifikasi Kecemasan Matematika dan Motivasi Belajar Terhadap Hasil Belajar Matematika Siswa Freddy Prasetyo; Dadan Dasari
RANGE: Jurnal Pendidikan Matematika Vol. 4 No. 2 (2023): RANGE Januari 2023
Publisher : Pendidikan Matematika UNIMOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpm.v4i2.3649

Hasil belajar matematika merupakan salah satu tolok ukur untuk melihat sejauh mana tujuan pembelajaran matematika telah tercapai, banyak faktor yang mempengaruhi hasil belajar matematika siswa, diantaranya adalah kecemasan dan motivasi belajar matematika. Metode penelitian yang digunakan adalah Systematic Literature Review (SLR) dengan kriteria inklusi yaitu artikel terindeks oleh Sinta atau Scopus, diterbitkan pada rentang waktu sepuluh tahun terakhir (2013-2022), ditulis dalam bahasa Indonesia atau Inggris, dan menggunakan metode penelitian kuantitatif, kualitatif, maupun metode gabungan, yang ditelusuri pada database Garuda dan Google Scholar. Tujuan penelitian ini yaitu untuk mengidentifikasi bagaimana motivasi belajar dan kecemasan matematika mempengaruhi hasil belajar matematika siswa. Hasil penelitian menemukan bahwa kecemasan matematika memiliki dampak negatif terhadap hasil belajar matematika, semakin tinggi tingkat kecemasan matematika maka akan semakin rendah hasil belajar siswa, hal ini karena kecemasan matematika menimbulkan rasa gelisah, rasa tidak nyaman ketika belajar, menimbulkan rasa cemas, tegang, dan takut. Sedangkan motivasi belajar memiliki hubungan terhadap peningkatan hasil belajar matematika, semakin baik motivasi belajar yang dimiliki siswa maka akan semakin baik hasil belajarnya, hal ini disebabkan motivasi belajar memunculkan kebiasaan belajar yang baik, membuat siswa bersemangat, bergairah dalam belajar dan mendorong rasa ingin tahu, serta mendorong siswa melakukan aktivitas pembelajaran yang optimal.

SENTIMENT ANALYSIS OF PRE-SERVICE MATHEMATICS TEACHER THROUGH NAÏVE BAYES CLASSIFIER: THE CASE OF MATHEMATICAL ABSTRACTION PROBLEM Andriatna, Riki; Dasari, Dadan
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 19 No 3 (2025): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol19iss3pp1485-1498

Mathematical abstraction as part of mathematical thinking process is an important and fundamental process in mathematics and its learning. Pre-service mathematics teachers' experiences and sentiments towards mathematical abstraction can contribute to the way they teach in the future. This study involved 67 Pre-service Mathematics Teachers at one of the Universities in Central Java Province who aimed to analyze their sentiments towards mathematical abstraction problems. The data collection technique used a questionnaire to reveal the Pre-service Mathematics Teacher's response to abstraction problems. Sentiment analysis is used to analyze the responses given which are categorized into positive, negative, or neutral. The technique used in the research is Naïve Bayes Classifier Multinomial. The classification results show 62.9% negative sentiment, 24.2% neutral sentiment, and 12.9% positive sentiment. In addition, the model evaluation results show an accuracy value of 66.7% which indicates the reliability of the model in classifying the sentiments expressed by Pre-service Mathematics Teachers towards mathematical abstraction problems. Pre-service Mathematics Teacher sentiment towards mathematical abstraction problems is dominated by negative sentiment. This shows that the process of mathematical abstraction is still considered a complicated and confusing process.

Case Study Of Statistical Reasoning On Integrated Learning Needs Of Statistics In Comic Digital Teaching Materials Gunadi, Farid; Dadang Junadi; Yaya S Kusumah; Dadan Dasari
Mathline : Jurnal Matematika dan Pendidikan Matematika Vol. 10 No. 2 (2025): Mathline : Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/mathline.v10i2.974

The low statistical reasoning ability of students and limited contextual learning media that are interesting and easy to understand are two of the weaknesses in learning statistics material. This study aims to examine students' statistical reasoning in the context of learning needs integrated with digital teaching materials, Statistics Comics. This study uses a case study approach involving high school students, teachers, and vice principals as subjects, as well as qualitative data analysis of the results of interviews with the three subjects. The results of the study, which were analyzed qualitatively with the help of Atlasti 8, showed that statistical reasoning learning requires a contextual and digital-based approach. This finding indicates that the development of digital teaching materials based on comics is needed as an innovative alternative in learning statistics that supports improving students' statistical literacy and reasoning in the digital era.

Kemampuan Literasi Statistik Siswa dalam Pembelajaran Abad 21: Systematic Literature Review dan Bibliometric Analysis Ritmayanti, Indah Rahmania; Turmudi, Turmudi; Dasari, Dadan
Juring (Journal for Research in Mathematics Learning) Vol 8, No 2 (2025)
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/juring.v8i2.37382

Literasi statistik merupakan kompetensi kunci yang diperlukan siswa untuk memahami, mengevaluasi, dan menggunakan data secara kritis dalam kehidupan sehari-hari, terutama di era abad ke-21 yang ditandai dengan derasnya arus informasi berbasis data. Penelitian ini bertujuan untuk mengkaji arah dan perkembangan studi mengenai literasi statistik siswa melalui pendekatan systematic literature review dengan metode PRISMA. Sebanyak 56 artikel yang dipublikasikan antara tahun 2015 hingga 2025 dianalisis secara sistematik dan bibliometrik menggunakan bantuan Publish or Perish dan VOSviewer. Hasil kajian menunjukkan adanya tren peningkatan jumlah publikasi sejak tahun 2018, dengan puncaknya pada tahun 2024, menandakan perhatian yang semakin besar terhadap literasi statistik dalam konteks pendidikan. Fokus utama penelitian banyak diarahkan pada jenjang Sekolah Menengah Pertama (SMP), yang dinilai sebagai fase strategis dalam pengembangan kemampuan ini. Pendekatan kualitatif mendominasi (87%) studi yang dianalisis, menunjukkan kecenderungan eksplorasi aspek proses berpikir dan pengalaman belajar siswa. Analisis co-occurrence kata kunci mengungkapkan tiga klaster utama: penguasaan literasi statistik oleh siswa, pengukuran kemampuan literasi dalam studi empiris, dan integrasi literasi statistik dalam pembelajaran abad ke 21. Temuan ini mengkonfirmasi bahwa literasi statistik telah menjadi aspek fundamental dalam pendidikan modern. Saran bagi peneliti selanjutnya adalah agar dapat mengembangkan peneliatian melalalui pendekatan kuantitatif atau mengeksplorasi pada jenjang pendidikan lain seperti sekolah dasar dan perguruan tinggi.

Student’s obstacles in learning surface area and volume of a rectangular prism related to mathematical representation ability Safitri, Gita; Darhim, Darhim; Dasari, Dadan
Al-Jabar: Jurnal Pendidikan Matematika Vol 14 No 1 (2023): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v14i1.16281

The surface area and volume of cubes and cuboids are mathematical concepts related to everyday life. However, many students need help learning this concept. This study aims to analyze the learning obstacles junior high school students encounter when solving mathematical representation problems on the concept of surface area and volume of cubes and cuboids. This study uses an interpretive paradigm which is part of Didactical Design Research (DDR). Students at one of the public junior high schools in Jambi City were given six questions related to mathematical representation after the researchers conducted classroom observations, which were then followed by interviews with students with high, moderate, and low representation abilities. Data analysis techniques include data reduction, display, and conclusion drawing and verification. The results showed that students experienced three learning obstacles: ontogenic, epistemological, and didactical. Furthermore, the results of this study can be a consideration for teachers to create learning designs for surface area and volume of cubes and cuboids that can anticipate student learning obstacles and develop students' mathematical representation abilities.

STEM AND STEAM EDUCATION IN 1st DECADE: A BIBLIOMETRIC ANALYSIS (2014-2025) Tupamahu, Pieter Zakarias; Dasari, Dadan; Priatna, Nanang; Lethulur, Nelma Dortje
Jurnal Magister Pendidikan Matematika (JUMADIKA) Vol 7 No 1 (2025): Jurnal Magister Pendidikan Matematika (JUMADIKA)
Publisher : Prodi Magister Pendidikan Matematika Pascasarjana Universitas Pattimura Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jumadikavol7iss1year2025page115-130

STEM and STEAM education has become a strategic learning approach in addressing global challenges in the Industrial Revolution 4.0 and Society 5.0 era, focusing on developing 21st-century skills, such as creativity, critical thinking, problem-solving and collaboration. This study used bibliometric analysis of 535 articles from the Scopus database published between 2014 and 2025 to explore research trends, dominant keywords, geographical contributions, and author and institutional impact. Data analysis conducted with RStudio, VOSviewer, and Excel identified four main clusters: skills development, educational approaches, utilization of STEM in various fields, and use of learning-based tools such as AR and VR. STEM and STEAM education effectively increased student engagement and built cross-disciplinary skills. However, challenges such as gaps in technology access and teacher training still need to be addressed. These results provide important insights for curriculum development, teacher professional training and education policies supporting technology-based learning transformation.

Ecological dimension of fraction arithmetic activities within two neighbouring countries: Study on textbooks and reference model Sahara, Sani; Suryadi, Didi; Tarmudi, Tarmudi; Dasari, Dadan
Indonesian Journal of Science and Mathematics Education Vol. 8 No. 2 (2025): Indonesian Journal of Science and Mathematics Education
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ijsme.v8i2.26456

In this study, how the mathematical activities of fraction arithmetic within the textbooks of two neighbouring countries, Indonesia and Malaysia, are influenced by the specific conditions and constraints presented in school textbooks is reviewed and examined, and the reasons behind them are understood. Two complementary frameworks, the anthropological theory of didactics and didactical design research are used to conduct an ecological analysis contributing to the theoretical discourse and practical application. The theoretical conversation suggests that ecological differences shaping the content of textbooks from both countries exert distinct influences on specific tasks, particularly within contexts with the unique characteristics of each nation. Furthermore, the scope of additional components is also examined regarding how situational sets are presented. A reference epistemological model to frame the epistemological analysis as a basis for future didactic design is also discussed for its implications on practice.

Co-Authors Aan Hasanah Abdurrahman do muhamad Naser Abdurrahman Do. Muhamad Naser AHMAD LUTFI Ahmad Lutfi Ahmad Mukhibin Alliseu Umiyati Ambarwati, Dela Arili, Neza Zakiya Aswin Aswin Atika Defita Sari Bahar, Afipa Amalia bambang avip Priatna Budi Rianto Christina Monika Christina Monika Samosir Dadang Juandi Dadang Juandi Dadang Junadi Darhim Darhim Dela Ambarwati Desy Lusiyana, Desy Dewi, Niken Shofiana Didi Suryadi Didi Suryadi Didi Suryadi Didi Suryadi Didi Suryadi Dika Faiz Himmawan Drajat, Widi Rahmawati Edi Supriyadi Eka Khairani Hasibuan Elah Nurlaelah Elah Nurlaelah Elsa Komala Elsa Komala, Elsa Enjun Junaeti Erika Yohanna Seventina Siahaan Fadhil Zil Ikram Fatmiyati, Novita Febrianti, Tri Sedya Fitri, Rahmia Mulya Fitria Maghfiroh, Fitria Fitria, Nida Fitriani agustina Fitriasari, Putri Fitriyah, Yuni Freddy Prasetyo Freddy Prasetyo, Freddy Gita Rani Putri Mangiri Gita Safitri Gunadi, Farid Hafilah, Putri Harahap, Maulana Al Aziz Hendriyanto, Agus Hidayat, Azhar Majid Himmawan, Dika Faiz Husna Fatwana Ilham Muhammad Ilham Muhammad Inayah, Clara fadhilah Inayah, Sarah Jarnawi Afgani Dahlan Jozua Sabandar Junaeti, Enjun Khofifa Romaito Siregar Laia, Harun Onesimus Lethulur, Nelma Dortje Lia Ardiansari Lina Nurhayati Lomri, Yani Astika Lubis, Asep Ridwan Lucky Heriyanti Jufri, Lucky Heriyanti Lukman hakim muhaimin Lukman Lukman Lutfi, Jasmine Salsabila Magdalena Wangge Mansyur, Azizul Jabbar Marchy, Febrinna Mardliyah, Syifa Marhami Marhami Marhami, Marhami Maria TSN Ma’ulfi Kharis Abadi Mitrayana Mitrayana Muhammad Fajar Anugrah Mulia Putra Nanang Priatna Nar Herrhyanto Naser, Abdurrahman Do. Muhamad ningrum, yunia jumita Nisa Azzahra Novita Fatmiyati Nurdiani, Nunung Nurdiani, Nunung Nurhayati, Hanifah Nurhayati, Lina Palupi Sri Wijayanti, Palupi Sri Panjaitan, M. Azhari Patrisius Afrisno Udil, Patrisius Afrisno Pujia Siti Balkist Putri, Mei Radia Rahmat Fitra Rahmat Kusharyadi Raisya Hizkiya Syabina Ramdhan Fazrianto Suwarman Rani Sugiarni Rayinda Khaerul Wiladah Bahrun Rianto, Budi Ridho, Muhamat Hidayatul Riki Andriatna Rita Novita Ritmayanti, Indah Rahmania Rizqi Dwi Maharani Rusyid, Husnul Khatimah Saffanah Pertiwi Safitri, Gina safitri, gita Sahara, Sani Samosir, Christina Monika Sani Sahara Saputra, Andari Saputri, Veni Sari, Atika Defita Sari, Merisa Ammelia Savitri, Gina Scristia, Scristia sholikhakh, Rizqi Amaliyakh Siahaan, Erika Yohanna Seventina Silitonga, R. H. Yanti Simanjuntak, Sinitta Simbolon, Asep Siswanto, Rizki Dwi Siti Fatimah Solehudin Solehudin Sri Hastuti Noer Sufyani Prabawanto, Sufyani Surya Kurniawan Swasti Maharani Syafdi Maizora Syaiful Syifa Mardliyah Tarmudi, Tarmudi Tatang Herman, Tatang Tri Nova Hasti Yunianta Turmudi Tuti Hartati Wahab A, Abdul Wangge, Magdalena Widyastuti Widyastuti Yani Astika Lomri Yaya S Kusumah Yaya S. Kusumah Yaya Sukjaya Kusumah

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