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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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INDEPENDENCE IN MATHEMATICAL THINKING OF GRADE XI STUDENTS OF BENGKULU STATE HIGH SCHOOL IN SOLVING COMBINATION PROBLEMS Maizora, Syafdi; Suryadi, Didi; Juandi, Dadang; Dasari, Dadan
Jurnal Math-UMB.EDU Vol. 12 No. 3 (2025): JULY
Publisher : Universitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/mathumbedu.v12i3.8611

This study aimed to analyze in depth the students' independent thinking ability in solving combination problems in combinatorics material. The research method used was a qualitative case study, involving 24 high school students in grade XI who were selected purposively based on the criteria of never having studied the concept of combination formally and never having faced similar problems. The research instrument consisted of specially designed combination story problems and semi-structured interview guidelines to explore students' cognitive processes. Analysis was carried out on four aspects of ability, namely: (1) the ability to state problems in other forms, (2) the ability to form a solution strategy, (3) the ability to apply strategies for solving, and (4) the ability to verify the results obtained. The results of the study stated: (1) problems were stated in the form of number symbols and diagrams, using narrative sentences, drawing circles, forming sets, and using symbols B1 to B6; (2) the solution strategies used included: counting with the help of symbols, counting directly without symbols, and counting alternately; (3) solutions were found by using a variable symbol and set approach; (4) no students verified their solution results. These findings confirmed that although the majority of students demonstrated independent thinking in problem-solving and strategy development, only a small proportion consistently implemented the strategy, and none verified the results. The implications of this research could serve as a reference for designing more effective learning strategies to develop students' independent thinking skills in mathematics, particularly in combinatorics. Keywords: Combination, Independent Thinking, Problem-Solving

Mathematics in Culture: Revealing Hidden Secrets Behind Indonesian Traditional Ceremonies Wangge, Magdalena; Dasari, Dadan; Turmudi, Turmudi
Tematik : Jurnal Konten Pendidikan Matematika Vol. 3 No. 2 (2025): TEMATIK: Jurnal Konten Pendidikan Matematika
Publisher : Prodi Tadris Matematika Fakultas Tadris Umum

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

Ethnomathematics examines the intersection of mathematics and culture, highlighting how mathematical concepts are embedded within local traditions. In culturally rich Indonesia, ethnomathematics holds increasing relevance. This study examines the presence of mathematical principles in traditional ceremonies, revealing their integration into various cultural elements, including clothing, dances, tools, and rituals. This study employs a systematic literature review (SLR) using the PRISMA approach to analyze 27 articles published between 2018 and 2024. Articles were selected through a structured search and screening process based on predefined inclusion and exclusion criteria. Data collection focused on identifying mathematical concepts in traditional ceremonies, while thematic analysis was used to categorize ethnomathematical patterns in Indonesian cultural practices. Findings highlight common patterns, such as geometric shapes, measurement techniques, and symmetry, which are evident in artifacts, traditional attire, and ceremonial practices. Additionally, the study underscores the variation in mathematical applications across different regions, reflecting Indonesia’s cultural diversity. These insights have significant implications for developing a more contextual and relevant mathematics education. By connecting mathematical concepts with local culture, ethnomathematics enhances student engagement and understanding, making learning more meaningful and culturally grounded. This approach not only enriches mathematical education but also helps preserve and appreciate Indonesia’s unique cultural heritage, promoting a more inclusive and diverse educational framework.

Kesalahan Konstruksi Konsep Ukuran Pemusatan Data pada Mahasiswa dengan Identitas Matematis Positif Ikram, Fadhil Zil; Dasari, Dadan; Dahlan, Jarnawi Afgani; Putri, Mei Radia
Jurnal Pendidikan Matematika Unpatti Vol 6 No 2 (2025): Jurnal Pendidikan Matematika Unpatti
Publisher : Program Studi Pendidikan Matematika Fakultas Keguruan dan Ilmu Pendidikan Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jpmunpatti.v6.i2.p69-84

Penelitian ini merupakan studi kualitatif yang mengeksplor kesalahan konstruksi konsep dua mahasiswa akuntansi dengan identitas matematis positif. Penelitian dilaksanakan dari bulan Desember 2023 sampai Januari 2024 pada salah satu universitas di Sulawesi Selatan. Data dikumpulkan melalui pemberian tes (soal utama dan soal pelacak yang dirancang khusus untuk mengetahui kesalahan konstruksi konsep) dan wawancara semi terstruktur. Konstruksi konsep diteliti menggunakan kerangka APOS dan mempertimbangkan beberapa kesalahan konstruksi konsep yang mungkin terjadi seperti lubang konstruksi, pseudo construction, mis-logical construction, dan mis-analogical construction. Data dianalisis dengan menggunakan tiga tahapan yaitu kondensasi data, penyajian data, dan pengambilan kesimpulan. Hasil penelitian menunjukkan bahwa bentuk kesalahan konstruksi yang dialami oleh mahasiswa dengan identitas matematis positif adalah lubang konstruksi. Dalam hal ini, mereka tidak mempertimbangkan nilai modus yang bisa lebih dari satu, dan bagaimana pengaruh outlier sehingga mereka mengalami kekeliruan dalam memilih ukuran pemusatan data mana yang paling sesuai untuk menjawab atau memecahkan masalah statistika yang diberikan.

Implikasi Filosofis Idealisme di Indonesia : Kajian Perspektif Guru Matematika Berbagai Tingkatan Sekolah Silitonga, R. H. Yanti; Dasari, Dadan
Jurnal Pendidikan Matematika Unpatti Vol 6 No 2 (2025): Jurnal Pendidikan Matematika Unpatti
Publisher : Program Studi Pendidikan Matematika Fakultas Keguruan dan Ilmu Pendidikan Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jpmunpatti.v6.i2.p61-68

Penelitian ini bertujuan untuk mengidentifikasi implikasi filosofis dari pendidikan idealisme sebagai teori pendidikan di Indonesia, dengan fokus pada pandangan guru matematika di berbagai tingkatan pendidikan (SD, SMP, SMA, dan SMK). Dalam konteks global yang semakin menuntut pendidikan adaptif dan progresif, penelitian ini mengevaluasi relevansi idealisme sebagai dasar filosofis pendidikan di era modern. Metode kualitatif digunakan melalui kuesioner yang terdiri dari 30 pernyataan, di mana data dianalisis secara deskriptif untuk mengeksplorasi persepsi guru. Sampel penelitian melibatkan 30 guru yang dipilih secara acak dari berbagai sekolah di Provinsi Maluku, terdiri dari 11 guru SD, 12 guru SMP, 3 guru SMA, dan 4 guru SMK (6 laki-laki dan 24 perempuan). Analisis data dilakukan secara kuantitatif dengan menggunakan statistik deskriptif berupa rata-rata, persentase, dan distribusi frekuensi. Temuan menunjukkan bahwa guru-guru di Indonesia menilai penerapan pandangan pendidikan idealis di seluruh sekolah cenderung memiliki pandangan antusias dengan rata-rata skor keseluruhan 4.29. Domain tujuan pendidikan memperoleh peringkat tertinggi (rata-rata 4.40), sedangkan domain peran guru berada pada peringkat terendah (rata-rata 4.16). Hasil ini mencerminkan dukungan dalam mengintegrasikan idealisme ke dalam sistem pendidikan Indonesia yang kontekstual dan responsif terhadap isu-isu global, seperti digitalisasi, keberlanjutan, dan pendidikan berbasis kompetensi. Penelitian ini memberikan wawasan bagi pengambil kebijakan untuk meninjau pendekatan filosofis dalam pendidikan nasional.

Epistemological Obstacles in Solving PISA Adapted Problems on System of Linear Equations In Two Variables Ningrum, Yunia Jumita; Dasari, Dadan; Prabawanto, Sufyani
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 9, No 4 (2025): October
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v9i4.31718

This study aims to identify and analyze the epistemological obstacles encountered by junior high school students when solving PISA-based mathematical literacy problems on the topic of System of Linear Equations in Two Variables (SLETV), viewed from the perspective of PISA competency levels. The research seeks to contribute to the development of more effective mathematics instruction. This study is deemed essential because epistemological obstacles can hinder students' ability to apply mathematical concepts in real-world contexts an ability that is central to international assessments such as PISA. A qualitative approach was employed through Didactical Design Research (DDR), involving 23 ninth-grade students. Data were collected through a written test consisting of a mathematical literacy problem adapted from PISA items, and supported by interviews and classroom observations. The data were analyzed using qualitative descriptive methods, focusing on students’ thinking processes and emerging error patterns. The findings reveal that students encounter various epistemological obstacles across all PISA competency levels (1b to 6), such as conceptual misconceptions, procedural errors, and difficulties in translating contextual information. At the lower levels (1b–3), students struggled to formulate basic algebraic models and perform arithmetic operations. At the higher levels (4–6), they experienced challenges in handling complex calculations, verifying solutions, and applying reasoning in abstract or multi-step situations. These obstacles stem from fragmented prior knowledge, limited exposure to contextual problems, and a lack of reflective habits. This study highlights the importance of integrating authentic real-world problems, providing systematic scaffolding, and fostering continuous self-verification practices in instructional design. The findings offer practical insights for developing targeted pedagogical interventions to enhance students' mathematical literacy and better prepare them to tackle SLETV problems in contexts similar to those featured in PISA.

“Apa yang Siswa Pikirkan Tentang Matematika?” Analisis Sentimen pada Siswa Kelas Tinggi Sekolah Dasar Widyastuti, Widyastuti; Dasari, Dadan; Noer, Sri Hastuti
Jurnal Pendidikan Matematika Universitas Lampung Vol. 12 No. 4: Jurnal Pendidikan Matematika Universitas Lampung (Desember 2024-Januari 2025)
Publisher : Faculty of Teacher Training and Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mtk/v12i4.pp252-265

The purpose of this study was to describe a sentiment model for elementary school students' comments on mathematics. Respondents in this study were 286 elementary school students in seven elementary schools in Bandar Lampung. Sentiment data were obtained through student comments that were collected in May-June 2024. Data analysis used sentiment analysis and mood analysis based on student comment texts carried out using Ekman's Basic Emotions classification. The analysis was carried out through Orange software using Corpus analysis, sentiment analysis, topic modeling, and also tweet profiler. The results of the analysis revealed that: i) the sentiment of elementary school students was dominated by positive sentiment (percentage achievement of 50%), with the three most keywords expressed in students' textual comments about mathematics were "fun", "difficult", "hard"; ii) the sentiment displayed by grade 5 and grade 6 students was dominated by positive sentiment while grade 4 students predominantly caused negative sentiment; and iii) the results of Ekman's Basic Emotions classification showed that "Joy" was the most dominant emotion felt by students in their textual comments about mathematics, while "fear" was the emotion with the least occurrence in students' textual comments about mathematics. The implications of the finding for the model of positive sentiment of elementary school students towards mathematics which can be used as a basis for selecting research interventions and mathematics learning strategies/methods that are more appropriate for elementary school students.

Crafting math minds: A bibliometric odyssey into innovative didactical designs for learning (2006-2023) Dasari, Dadan; Muhammad, Ilham; Juandi, Dadang
Jurnal Elemen Vol 10 No 1 (2024): January
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v10i1.24935

The importance of Didactical Design in mathematics education must be addressed. Didactical Design is essential in mathematics education because it can optimize learning. Efforts to design learning experiences that combine didactic and design principles can lead students to acquire knowledge correctly and epistemically. This research aims to capture the landscape of previous research relevant to Didactical Design in Mathematics Education. This study constitutes a literature review research, wherein 56 publications were gathered from the Scopus database. These publications were subsequently subjected to bibliometric analysis with the assistance of the VOSviewer application. The analysis results show a rapid increase in publications since 2019, primarily focusing on didactic design, barriers to student learning, mathematics education, and retrospective analysis. The study also identified the emergence of new themes in Didactical Design research, such as the study of specific mathematical competencies and the integration of technology in design, e-learning, augmented reality, and STEM. Several implications are presented as helpful information for scientists and stakeholders.

Students' Computational Thinking Ability in Calculating an Area Using The Limit of Riemann Sum Approach Junaeti, Enjun; Herman, Tatang; Priatna, Nanang; Dasari, Dadan; Juandi, Dadang
Mosharafa: Jurnal Pendidikan Matematika Vol. 12 No. 2 (2023): April
Publisher : Department of Mathematics Education Program IPI Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31980/mosharafa.v12i2.778

Melatih kemampuan berpikir komputasional mahasiswa membuka peluang untuk lebih menguasi konsep, menganalisis permasalahan, dan membangun solusi dunia nyata. Tujuan penelitian adalah menganalisis kemampuan berpikir komputational mahasiswa Pendidikan Ilmu Komputer berupa kemampuan abstraksi, dekomposisi, berpikir algoritmik, dan generalisasi. Metode penelitian yaitu studi kasus dengan pendekatan kualitatif deskriptif. Pembelajaran dilakukan kepada 40 mahasiswa semester 1 (satu) secara kolaboratif dalam penyelesaian masalah luas daerah dengan pendekatan limit. Pada akhir pembelajaran mahasiswa diberikan soal tes kemampuan berpikir komputasional mahasiswa. Jawaban tes setiap mahasiswa dianalisis dari segi sisi fungsi mental yang muncul untuk mengetahui karakteristik akusisi kemampuan penyelesaian masalah. Pada penelitian yang telah dilakukan mahasiswa dikategorikan dalam kelompok novice, advanced beginner, competent, proficient, dan expert berdasarkan karakter penyelesaian masalahnya. Pada umumnya setiap mahasiswa telah memiliki kemampuan berpikir algoritmik. Sebagian besar mahasiswa (kecuali kategori novice) juga telah mampu mengabstraksi dan mendekomposisi permasalahan. Sedangkan kemampuan pengenalan pola baru terlihat pada mahasiswa dengan kategori competent, proficient, dan expert. Training students' computational thinking ability provides opportunities to comprehend concepts, analyse problems, and build solutions in real-life contexts. The purpose of the study was to analyse the computational thinking abilities of Computer Science Education students, i.e., abstraction, decomposition, algorithmic thinking, and generalization abilities. The research method used was a case study with a descriptive qualitative approach. The learning process was conducted by 40 students for semester 1 (one) semester collaboratively in solving area problems using the limit approach. At the end of the lesson, the students were tested through students' computational thinking abilities. Each student's answers were analyzed in terms of the mental functions that emerged to determine the characteristics of the acquisition of problem-solving ability. In this study, the students were categorized into groups of novices, advanced beginner, competent, professional, and expert based on the natures of their problem solving. In general, every student had the ability to think algorithmically. Most students (except the novice category) were able to abstract and unravel the problems. Meanwhile, the ability to recognize new patterns were demonstrated by the students in the competent, professional, and expert categories.

Evaluasi Implementasi Algoritma Machine Learning K-Nearest Neighbors (KNN) Dengan Menggunakan Rapid Miner Pada Data Hasil Belajar Siswa SMP Jufri, Lucky Heriyanti; Dasari, Dadan
Jurnal Gantang Vol 8 No 2 (2023): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jg.v8i2.6590

The focus of the PISA 2022 assessment is on the subjects of Mathematics, Language and Science. Therefore, these subjects are compulsory subjects at every level of education. Because learning activities are the most important activities, the success of a learning activity is measured by the learning outcomes that have reached completeness or failed. Prediction of completeness or failure can be done by classifying data using the K-Nearest Neighbors (KNN) algorithm using the RapidMiner application. The KNN algorithm is one of the classification methods for a set of data based on learning data that has been classified before. The data used are student learning outcomes in Mathematics, Indonesian Language and Science subjects at the junior high school education level in Padang city. This research aims to predict student learning outcomes in Mathematics, Indonesian and Science subjects based on student score completeness by comparing various k values to obtain the best performance of this algorithm. The results obtained after analyzing the KNN algorithm are Classification using the KNN algorithm is most accurate when the value of k = 5 and k = 7. Where by using the value of k, the accuracy of the KNN algorithm reaches the maximum result of 94.12%. Thus, this algorithm can help teachers to predict or find out how appropriate student completeness.

Sentiment analysis of prospective mathematics teacher on reasoning and proof questions using Naïve-Bayes classification Scristia, Scristia; Dasari, Dadan; Herman, Tatang
Jurnal Gantang Vol 8 No 2 (2023): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jg.v8i2.6591

Reasoning and proof is the ability to arrange patterns, make conjectures, test conjectures, and carry out logical proof, which can be seen as negative or positive for students when solving proof problems requiring reasoning skills. Prospective mathematics teachers in the Mathematics Education Study Program of FKIP Universitas Sriwijaya became the subject of this study. As the research instrument, the questionnaire was designed to explore students' opinions and responses to problems with significant logical difficulty. Sentiment analysis was used to analyze the opinions of prospective mathematics teachers on reasoning and proof questions by grouping positive and negative opinions. The technique used in this study uses the Naïve Bayes algorithm. The classification results in this study were 58.2% positive and 41.86.7% negative, with a total of 70 data. The final result achieved an accuracy value of 53.33%, signifying the reliability of the Naïve Bayes algorithm in understanding and classifying the complex spectrum of sentiments expressed by students. The implications of these findings go beyond sentiment analysis, providing valuable insights for educators, curriculum developers, and policymakers in designing learning strategies and educational policies that can improve mathematics students' reasoning and proof abilities.

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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