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Dian Kurniati

Mathematics Education Department, University Of Jember, East Java

Author-ID : 2512929

Religion Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Nursing Public Health Social Sciences Other

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Mathematical Literacy in Solving PISA Space and Shape Problems : A Self-Regulation Perspective Untu, Zainuddin; Widyasari, Tri; Hastuti, Intan Dwi; Sutarto, Sutarto; Sepeng, Percy; Kurniati, Dian; Osman, Sharifah
Jurnal Kependidikan : Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran, dan Pembelajaran Vol. 11 No. 1 (2025): March
Publisher : LPPM Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jk.v11i1.14659

This study aims to explore the role of self-regulation in enhancing mathematical literacy among high school students solving PISA Space and Shape problems. Employing a qualitative descriptive approach, data were collected through self-regulation questionnaires, PISA-based tasks, and semi-structured interviews from high school students categorized into high, moderate, and low self-regulation groups. The data analysis technique in this study consisting of three stages: data condensation, data display, and conclusion. Results reveal a strong correlation between self-regulation and mathematical literacy, with high self-regulation students excelling in formulating, employing, and interpreting mathematical problems. Moderate self-regulation students displayed partial success, while low self-regulation students struggled significantly, particularly in interpreting and validating solutions. The study underscores the importance of self-regulation strategies such as goal-setting, monitoring, and reflection in improving mathematical literacy. Instructional recommendations include structured goal-setting frameworks, reflective practices, and scaffolded tasks to support learners with varying self-regulation levels. These findings contribute to mathematics education by addressing the interplay between self-regulation and problem-solving in the underexplored Space and Shape domain. Future research should expand on these insights through larger, longitudinal studies to further validate the implications of self-regulation in educational contexts.

An Analysis of Students' Errors in Constructing the Concept of Integer Operations Based on Assimilation and Accommodation Kurniati, Dian; A’yun, Qurrota; Jatmiko, Dhanar Dwi Hary; Pambudi, Didik Sugeng; Oktavianingtyas, Ervin; Sutarto, Sutarto; Osman, Sharifah
Tadris: Jurnal Keguruan dan Ilmu Tarbiyah Vol 10 No 2 (2025): Tadris: Jurnal Keguruan dan Ilmu Tarbiyah
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/tadris.v10i1.26152

Errors in constructing concepts often occur in mathematics learning, especially in the topic of integer operations. These errors arise because students tend to memorize procedures or rules without fully understanding the underlying concepts. This research aims to analyze students' errors in constructing the concept of integer operations based on assimilation and accommodation. This study uses a qualitative method with 16 students from class VII B at MTs Baitul Hikmah Tempurejo as subjects. The data collection methods in this study included tests and interviews. Data analysis was carried out through the stages of analyzing test results, conducting interviews, and triangulating the data to ensure validity. Based on the analysis and discussion of the data, it can be concluded that all subjects experienced errors in constructing the concept. Four types of concept construction errors were identified: Pseudo Construction, Construction Hole, Mis-logical Construction, and Mis-analogical Construction. Pseudo Construction occurs when a student merely memorizes phrases like "negative meets negative, the result is positive" without a deeper understanding of the concept. Construction Hole occurs when a student provides incorrect answers due to incomplete understanding or failure to comprehend the problem. Mis-logical Construction happens when a student makes an incorrect assumption or conclusion, while Mis-analogical Construction involves false analogies, such as equating the concept of adding negative numbers with adding positive numbers. The results of this study are expected to provide insights into the types and causes of errors in concept construction made by students, which can then be used as a basis for developing effective learning strategies to help students understand concepts correctly.

Penerapan Komunikasi Vertikal Antara Pimpinan Dan Karyawan Dalam Membangun Kepuasan Kerja Di Divisi Spare Part Astra Motor Main Dealer Kota Bengkulu Kurniati, Dian; Adhrianti, Lisa; Firmansyah, Mas Agus
Jurnal Khabar: Komunikasi dan Penyiaran Islam Vol. 7 No. 2 (2025): Desember
Publisher : STAI Bumi Silampari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37092/khabar.v7i2.1161

This study aims to determine the application of vertical organizational communication between leaders and employees in building job satisfaction in the Spare Parts Division of PT Astra Motor Main Dealer, Bengkulu City. Using a qualitative approach with a case study method and purposive sampling technique, data were collected through interviews, observations, and documentation. The results of the study indicate that the application of vertical communication between leaders and employees in the Spare Parts Division of PT Astra Motor Main Dealer, Bengkulu City has been running quite well but still faces several obstacles. Vertical communication is carried out in two directions, namely communication from leaders to subordinates (downward communication) and from subordinates to leaders (upward communication). When communication is carried out openly, clearly, and two-way, employees feel more appreciated, better understand the tasks assigned, and are more motivated to contribute to achieving company goals. However, there are still obstacles that hinder the effectiveness of communication, such as delays in information, lack of feedback from superiors, and miscommunication that arises due to differences in perception between leaders and subordinates. Therefore, efforts are needed to improve the quality of communication through openness, timely delivery of messages, and strengthening two-way communication channels so that vertical communication can function optimally in building employee job satisfaction.

The Thinking Process of Students in Proving Ceva's Theorem in Basic Geometry Course Anisa Widiastuti; Susanto Susanto; Abi Suwito; Dian Kurniati; Nurcholif Diah Sri Lestari
Didaktik Matematika Vol 11, No 2 (2024): OCTOBER 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jdm.v11i2.40451

.The thinking process is crucial in identifying students' challenges in formulating logical arguments,particularly when proving geometric concepts such as Ceva's Theorem. This study investigates the cognitive processes of students with high and medium mathematical ability to solve proof problems related to Ceva's Theorem.Adopting a qualitative approach, the research employed a case study design, utilising data collection techniques including tests, interviews, observations, documentation, and triangulation.The research subjects comprised two undergraduate students of Mathematics Education, representing a medium and high mathematical ability category. The research findings revealed that students with high mathematical abilityprogressedthrough assimilation, accommodation, and equilibrium stages in proving Ceva's Theorem. In contrast, students with moderate mathematical ability experienced the disequilibrium phase first beforeadvancing to assimilation, accommodation, and equilibrium. The fundamental difference between these two groups lies in their ability to identify the question posed in the problem andcorrectly identify the theorem to be proved.This research provides valuable insights into the cognitive processes involved in mathematical proof, offering an in-depth understanding of how students approach the proof of Ceva's Theorem.

The Application of Synchronous and Asynchronous Learning using E-learning on Elementary Linear Algebra Dwi Ivayana Sari; Moh. Zayyadi; Sharifah Osman; Milawati Milawati; Dian Kurniati
Didaktik Matematika Vol 9, No 1 (2022): April 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jdm.v9i1.24759

Learning activities were changed from face-to-face to full-online due to the COVID-19 pandemic at the end of 2019. Online learning through WhatsApp Group (WAG) was used by a mathematics teacher in higher education program in the early 2020. However, the learning result showed that 75% of preservice teacher were unable to accomplish their elementary linear algebra material. The combination of online learning through asynchronous method and synchronous learning was an alternative solution to solve the problem and enable preservice teachers having virtual face-to-face interactions with their lecturers. Therefore, this study was conducted to determine the improvement in preservice teachers' learning outcomes and responses to synchronous and asynchronous learning. The research design used was one group posttest-only with 23 subjects were selected by clustered random sampling. Data were analyzed by descriptive statistical analysis. The test results showed that learning outcomes after synchronous and asynchronous learning was effective. While the questionnaire results expressed most preservice teachers gave a positive response to both learning methods. Thus, the combination of the two methods could improve the effectiveness of online learning during the Covid-19 pandemic. It is recommended that higher education institutions provide innovative e-learning platforms for preservice teachers in developing further online learning methods.

Development of Differentiated Learning Tools with Mathematics Problem Solving Based on ESD to Improve Critical Thinking Skills of Junior High School Students Kurniati, Dian; Rosyidah, Afni Nur; Murtikusuma, Randi Pratama; Pambudi, Didik Sugeng; Lestari, Nurcholif Diah Sri; Osman, Sharifah; Sepeng, Percy
Mosharafa: Jurnal Pendidikan Matematika Vol. 15 No. 1 (2026): January
Publisher : Department of Mathematics Education Program IPI Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31980/mosharafa.v15i1.2440

Rendahnya kemampuan berpikir kritis siswa SMP dan keterbatasan perangkat pembelajaran berbasis Education for Sustainable Development (ESD) menjadi latar belakang penelitian ini. Penelitian ini bertujuan mengembangkan perangkat pembelajaran matematika pada materi perbandingan (senilai, berbalik nilai, dan skala) untuk meningkatkan kemampuan berpikir kritis siswa. Menggunakan model pengembangan 4D (Define, Design, Develop, Disseminate), penelitian dilakukan terhadap 32 siswa kelas VII C SMP Negeri 12 Jember. Instrumen pengumpulan data meliputi lembar validasi, observasi keterlaksanaan, tes hasil belajar, dan angket respons siswa. Hasil penelitian menunjukkan perangkat pembelajaran memenuhi kriteria: Valid, dengan rerata 3,92; Praktis, dengan persentase respons siswa 87% dan keterlaksanaan 100%; serta Efektif, dengan peningkatan hasil belajar melalui skor N-Gain sebesar 87%. Simpulan penelitian ini menunjukkan bahwa perangkat pembelajaran berbasis ESD layak digunakan dan berpotensi menjadi alternatif untuk meningkatkan kemampuan berpikir kritis siswa. The low critical thinking skills among junior high school students and the lack of learning resources based on Education for Sustainable Development (ESD) underpin this research. This study aims to develop mathematics learning materials on the topic of ratios—covering direct proportions, inverse proportions, and scales—to enhance students' critical thinking skills. Employing the 4D development model (Define, Design, Develop, Disseminate), the study involved 32 seventh-grade students at SMP Negeri 12 Jember. Data collection instruments included validation sheets, observation forms for instructional implementation, learning achievement tests, and student response questionnaires. The results indicate that the developed materials meet the following criteria: Valid, with an average score of 3.92; Practical, evidenced by an 87% student response rate and 100% instructional implementation; and Effective, demonstrated by an N-Gain score of 87% in learning outcomes. In conclusion, the ESD-based learning materials are feasible for classroom use and serve as a viable alternative to improve students' critical thinking skills.

Effectiveness of Digital Simulation-Based Learning Approach in Optimizing Students’ Understanding of Queueing Models Using Real-Life Data Arin Berliana Angrenani; Dian Kurniati; Susi Setiawani; Rafiantika Megahnia Prihandini; Ngizatul Afifah
(IJCSAM) International Journal of Computing Science and Applied Mathematics Vol. 11 No. 2 (2025)
Publisher : LPPM Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24775401.ijcsam.v11i2.8850

This study examines indications of the effectiveness of a digital simulation-based learning approach in supporting students’ understanding of queueing models using real-life data. Aquasi-experimental one-group pretest–posttest design, supported by qualitative interview data, was conducted with 31 undergraduate mathematics education students at the University of Jember. The ExtendSim software was used to create interactive queueing simulations that allowed students to explore parameters such as arrival rate, service rate, and waiting time. Validity and reliability tests were conducted using item–total (Pearson) correlations and Cronbach’s alpha, with results indicating high validity (r > 0.5, p < 0.05) and high internal consistency (a > 0.80). A paired ttest showed a statistically significant increase in scores within this sample (t = 8.89, p < 0.001). Students’ perceptions of the simulation were highly positive, with an average Likert score of 3.23 (very high). Qualitative interviews further indicated that the simulations helped students visualize queue dynamics and relate theoretical concepts to real-life contexts. There were also indications of increased motivation, engagement, and computational thinking skills; however, these findings are limited by the single-site sample and the one-group study design.

Development of LSLC-Based Collaborative Learning Model Learning Tools And Their Effects on Critical Thinking Skills Evi Takrimatul Ailiyyah; Pambudi, Didik Sugeng; Fatekurohman, Mohamad; Kurniati, Dian; Susanto
Vygotsky: Jurnal Pendidikan Matematika dan Matematika Vol. 6 No. 2 (2024): Vygotsky: Jurnal Pendidikan Matematika dan Matematika
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/voj.v6i2.1014

The purpose of this study is to develop collaborative learning-based learning resources and their impact on students' capacity for critical thought. This study used a combination of methods, namely development research (R&D) with Thiagarajan 4D model and experimental research. Data was collected through observations, questionnaires, tests, and interviews. The validity coefficients for the Teaching Module, worksheet, and test were 3.80, 3.80, and 3.70, respectively. Observations showed that 96% of the learning tools met practical criteria. The tools were effective, with 93% of student activities rated very good, 96% of students giving positive responses, and 85% achieving learning completion. A t-test (sig = 0.007) confirmed the collaborative learning tool based on LSLC significantly enhanced students' critical thinking skills.

Developing a Set of Learning Tools Based on Realistic Mathematics Education for Sequences and Series Assisted by MathCityMap in Islamic Boarding School Hanifah Rizki Mubarokah; Pambudi, Didik Sugeng; Lestari, 3Nurcholif Diah Sri; Dian Kurniati; Abi Suwito
Riemann: Research of Mathematics and Mathematics Education Vol. 8 No. 1 (2026): EDISI APRIL
Publisher : Program Studi Pendidikan Matematika Universitas Katolik Santo Agustinus Hippo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38114/riemann.v8i1.200

Mathematics learning is essential for strengthening students’ logical reasoning and numeracy skills, particularly in abstract topics such as sequences and series; however, instructional practices in Islamic boarding schools often remain procedural and insufficiently contextualized, creating a gap between theoretical recommendations of meaningful learning and classroom reality. This study aims to develop and evaluate RME-based learning tools for sequences and series assisted by MathCityMap to determine their validity, practicality, and effectiveness in a pesantren context. The research employed a 4D development model consisting of Define, Design, Develop, and Disseminate stages. Implementation involving an experimental class and a control class, each comprising 34 students. Data were collected through expert validation sheets, observation instruments, questionnaires, interviews, and numeracy pretest-posttest assessments. The results show that all learning tools achieved valid criteria, with average expert scores above 3.75 on a four-point scale. Practicality was confirmed by 95% implementation fidelity, 84.9% active student participation, and highly positive teacher and student responses. Effectiveness testing revealed a moderate N-gain score of 0.65 in the experimental class compared to 0.54 in the control class, with an independent samples t-test indicating a significant difference (Sig. = 0.049 < 0.05). These findings demonstrate that integrating Realistic Mathematics Education with MathCityMap enhances conceptual understanding, engagement, and numeracy achievement in sequences and series learning within Islamic boarding schools.

Developing Nearpod-based interactive learning media on the topic of algebra to improve critical thinking ability Dian Kurniati; Sabna Setiawati; Dhanar Dwi Hary Jatmiko; Arika Indah Kristiana; Rafiantika Megahnia Prihandini
AXIOM : Jurnal Pendidikan dan Matematika Vol 15, No 1 (2026)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/axiom.v15i1.20543

Interactive learning has become a necessity in the modern educational era, particularly for facilitating students’ understanding of abstract mathematical concepts such as algebra. Difficulties in comprehending algebraic concepts often hinder the development of students’ critical thinking skills, which are essential for solving problems and making logical decisions. This study aimed to develop Nearpod-assisted interactive learning media and examine its effectiveness in enhancing students’ critical thinking skills in algebra. The study employed the Thiagarajan (4-D) development model, consisting of four stages, namely define, design, develop, and disseminate. The research subjects were selected through purposive sampling and consisted of 31 seventh-grade students (16 females and 15 males) from Class VII G of State Junior High School 4 Jember, Indonesia, who demonstrated low levels of critical thinking skills based on the results of an initial assessment. Data were collected through classroom observations, critical thinking tests, and student response questionnaires. The effectiveness of the developed media was evaluated by testing the research hypothesis regarding the impact of Nearpod-assisted learning on students’ critical thinking skills. Data were analyzed using a paired-samples t-test and N-Gain analysis. The t-test results showed a significance value (Sig. 2-tailed) of 0.000 (< 0.05), indicating a significant difference between the mean pre-test and post-test scores. Furthermore, the N-Gain percentage reached 80.19%, indicating a high level of improvement. These findings suggest that Nearpod-assisted interactive learning media is effective in improving students’ critical thinking skills in algebra and positively contributes to their learning outcomes at State Junior High School 4 Jember.

Co-Authors A.Wilda Indra Nanna Abdillah Putra Maulana Abdur Rahman As’ari Abdur Rouf, Abdur Abi Suwito Abi Suwito Abi Suwito Aini, Filda Nur Alfarisi, Muhammad Alfan Ambarwati, Reza Anggraeni, Citra Dwi Anggraini, Devi Dwi Anisa Widiastuti Annisatul Muffidah Antonius Cahya Prihandoko Anwar Us, Kasful Any Isroaty Ardiansyah, Kamal Arfiansyah, Digga Ariestyan, Yola Arika Indah Kristiana Arin Berliana Angrenani Atin Hafizatul Aini Azizah, Rialita Fitri A’yun, Qurrota Brigita Wanda Pangestika Cahyadewi, Karina Cindy Cici Fitri Lestari, Cici Fitri Cindy Adelia Damayanti, Putri Intan Dedi Kusnadi Diah Sri Lestari, Nurcholif Dian Atika Sofie Diana Sulfikawati, Diana Didik Sugeng Pambudi Dinawati Trapsilasiwi Dwi Hary Jatmiko, Dhanar Dwi Ivayana Sari Dwiyana Dwiyana Dwiyana Dwiyana, Dwiyana Elniati, Sri Emdat Suprayitno Erfan Yudianto Ervin Oktavianingtyas Eva Liskurniawati, Eva Evi Takrimatul Ailiyyah Farida Hanim Yahya Fazira, Shima Kunaza Febriyanto, Eko Yudi Febriyanto Fiad, Uluf Finda Dwi Permatahati, Finda Dwi Fiqih Nur Hakiki Firmansyah, Frenza Fairuz Firmansyah, Mas Agus Fitri Annisa Guvinta Rahayu Habibi, Ahmad Anas Hafidhoh, Nabilatul Hanifah Rizki Mubarokah Hanifah Rizki Mubarokah Harimukti, Romi Hasan Basri Hasan Basri Hedi Pudjo Santosa Hidayah, Fauzia Nurul Hikamah, Lailatul Hobri Iffah Tsabita Ikhsani Indah Nabilla Nur Lutfiyyah Zariyatan Indahwati, Rohmah Indri Handayani, Indri Indriawati, Syahdinar Inge Wiliandani Setya Putri Intan Dwi Hastuti Irawan, Dahlan Irianto Aras Irvani, Fajrin Abidiyah Islamiah, Maulidi Arsih Umaroh Isma, As’ad Jamil, Nur Asiyah Jannatasari, Nindi Zakia Jatmiko, Dhanar Dwi Hary Karina Cindy Cahyadewi Krisagotama, Fisdianti Lailiya, Muhimatul Lestari, 3Nurcholif Diah Sri Lestari, Nurcholif Diah Sri Lioni Anka Monalisa, Lioni Anka Lisa Adhrianti Liski Roswita Dinia Lukman Hakim M. Syahran Jailani Maharani Hayuning Pangastuti Pribadi Maisah Maulana, Abdillah Putra Maulana, Dikri Meilysa Ajeng Kartika Putri Milawati Milawati Minnah El Widdah Misbahul Munir Mohamad Fatekurohman Much Yulianto Muh. Hanif Mukhtar Latif Mulyati Nadia Dwi Cahyani Nancy Yunita Susanti, Nancy Yunita Nanik Yuliati Ngizatul Afifah Nurcholif Diah Sri Lestari Nurmaharani, Rika Nurmaharani, Rika Nurwijayanti Octaerdiyani, Debby Osman, Sharifah Palupi, Doni Dwi Pambudi, Didik Suggeng panglipur, indah rahayu Percy Sepeng Percy Sepeng Pratiwi, Enditiyas Pribadi, Maharani Hayuning Pangastuti Puguh Darmawan Purwanto Purwanto Purwanto Purwanto Puspitasari, Nitta Putra, Rizki Cahya Eka Putri Wulandari PUTRI WULANDARI Putri, Inge Wiliandani Setya Rafiantika Megahnia Prihandini Rahmawati, Mira Rahmawati, Siska Ramadhan, Mustafa Randi Pratama Murtikusuma Reza Ambarwati Rezqy Ayu Devi Arafah Ridho Alfarisi, Ridho Rika Nurmaharani Rohmah Indahwati Rosyidah, Afni Nur S Suharto S Sunardi S Susanto Sabna Setiawati Saddam Hussen Saleh, Sitti Fithriani Sanawi, Ihsan Sapta, Hendra Sari, Diah Ayu Nurvita Sayid Mubarak Sefina Vamelia Hanim Sembiring, Rinawati Sepeng, Percy Septia Anggraini Setiyawati, Endah Dwi Sharifah Osman siti fadilah Sitti Fithriani Saleh Sitti Fithriani Saleh Solly Aryza Subanji Subanji Subanji Suharto Suharto Sunardi Sunardi Sunardi Sunardi Sunardi, Sunardi Suratno Suratno SUSANTO Susanto Susanto Susanto Susanto Susanto, Susanto Susi Setiawani Sutarto Sutarto Sutarto Sutarto Suwarno Suwarno Su’aidi Titik Sugiarti Titis Rini Chandrasari, Titis Rini Tonra, Wilda Syam Toto Bara Setiawan Trapsilasiswi, Dinawati Tri Widyasari Tri Widyasari, Tri Triyono Lukmantoro Umami, Anggi Nabilla Untu, Zainuddin Untu, Zainuddin Untu Vidayanti, Nurul Wasilatul Murtafiah Widhaning, U'ul Ulinuha Rahajeng Wijaya, Achmad Alfian Budi Yahya, Farida Hanim Yakin, Saeful Aenul Yun Sari, Lili Yuniar, Sita Nastiti Zakiyah Yasin Zayyadi, Moh

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