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Wardani Rahayu

Universitas Negeri Jakarta

Author-ID : 2388761

Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Problem-based learning: Its effect on higher-order mathematical thinking skills in terms of student's initial abilities and mathematical beliefs Simanjuntak, Dion Aris; Makmuri, Makmuri; Rahayu, Wardani
Al-Jabar: Jurnal Pendidikan Matematika Vol 12 No 2 (2021): 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.v12i2.10137

The higher-order thinking ability of students in Indonesia is still in the low category. This research aims to see the effect of the application of a problem-based learning model on higher-order mathematical thinking skills in terms of student's initial abilities and mathematical beliefs. This research uses a quasi-experimental design with a Non-Equivalent Control Group Design. Data on students' higher-order mathematical thinking skills were taken using a test instrument. This research was conducted at SMP Negeri 27 Jakarta with a total of 165 students obtained from cluster random sampling. Based on the analysis of the three-way ANOVA test, it was found that the problem-based learning model had a positive effect on students' higher-order thinking skills. Problem-based learning model gives better results than conventional learning models. This also applies to students with the initial ability and mathematical beliefs in the high category. Problem-based learning can be an alternative for teachers to improve students' higher-order mathematical thinking skills.

Validitas dan Reliabilitas Instrumen Self Efficacy dalam Pembelajaran Matematika Nurhasanah, Heni; Rahayu, Wardani; Hidajat, Flavia Aurelia
ANARGYA: Jurnal Ilmiah Pendidikan Matematika Vol 8, No 1 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/anargya.v8i1.14214

Tujuan dari penelitian ini adalah untuk menganalisis validitas dan reliabilitas instrumen self efficacy dengan menggunakan Rasch Model. Responden pada penelitian ini merupakan siswa SMA berjumlah berjumlah 347 orang. Hasil analisis instrumen self-efficacy menggunakan model Rasch ditinjau berdasarkan aspek-aspek unidimensionalitas, analisis butir item (termasuk tingkat kesulitan dan kesesuaian butir item), serta analisis keseluruhan instrumen. Temuan dari penelitian ini menunjukkan bahwa nilai Cronbach Alpha mencapai 0,90, yang tergolong dalam kategori sangat baik. Selain itu, nilai person reliability tercatat sebesar 0,88, yang termasuk dalam kategori baik, dan nilai item reliability sebesar 0,98, yang berada pada kategori istimewa. Dengan hasil tersebut dapat dikatakan instrumen self-efficacy dapat digunakan dalam pembelajaran matematika.

Psikometrika Instrumen Konsep Diri dalam Pembelajaran Matematika Khoirunnisa, Mustika; Rahayu, Wardani; Hidajat, Flavia Aurelia
ANARGYA: Jurnal Ilmiah Pendidikan Matematika Vol 8, No 1 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/anargya.v8i1.14213

The purpose of this study was to develop a non-test instrument that can be used to measure students' self-concept in mathematics learning. The instrument created was a self-concept questionnaire with 12 statements with three dimensions of self-concept, namely knowledge, expectations, and assessments. This instrument is in the form of a rating scale with 4 choices, namely strongly disagree, disagree, agree, and strongly agree. The respondents in this study were 306 high school students. Data processing in this study used the Rasch Model which was operated through the Winstep application. The reliability of the self-concept development instrument is in the good category with a Cronbach Alpha (KR-20) Person Raw Score value of 0.71, meaning that the development instrument in this study can be used to express students' self-concept in mathematics learning. Include from 12 items of student self-concept statements in mathematics learning valid because they meet at least one validity criterion.

Implementing Rasch Model for Modern Test Evaluation Using Python Prototype Piliyang, Yusriizal; Arafiyah, Ria; Rahayu, Wardani
J-KOMA : Jurnal Ilmu Komputer dan Aplikasi Vol 8 No 1 (2025): J-KOMA : Jurnal Ilmu Komputer dan Aplikasi
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/j-koma.v8i1.04

This study explores the implementation of the Rasch Model for modern test evaluation using a custom Python prototype, validated against Winsteps software. Focusing on dichotomous exam data from a significant sample, the research estimates participant ability and item difficulty with high precision, achieving standard errors below 0.30. The model identifies misfitting items, such as Item I5 with an outfit mean square of 1.45, enhancing test design reliability. Item Characteristic Curves (ICC) and Item Information Functions (IIF) support the efficacy of Computer Adaptive Testing (CAT) across varying ability levels. Results demonstrate the prototype's consistency with Winsteps (correlation = 0.98), affirming its potential as a flexible tool for educational assessment. Limitations include the command-line interface and the need for larger datasets, suggesting future improvements in scalability and usability. This work advances modern testing practices, offering a foundation for adaptive and fair assessment systems.

Rasch model analysis: Evaluating students' spatial thinking ability in higher-order thinking skills trigonometric comparison assessment (HOTS-TCA) Ocy, Dwi Rismi; Rahayu, Wardani; Arthur, Riyan
Jurnal Gantang Vol 9 No 2 (2024): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jg.v9i2.6949

This study addresses the critical issue of insufficient spatial thinking abilities among students, which significantly affects their performance in higher-order thinking skills (HOTS) tasks, particularly in trigonometry. Focusing on 11th-grade students in Tanjungpinang, Indonesia, the research investigates how spatial thinking influences the ability to solve trigonometric comparison problems. Employing a mixed-method approach, the study integrates quantitative data from the Higher-Order Thinking Skills in Trigonometric Comparisons Assessment (HOTS-TCA) with qualitative insights from post-test interviews. Rasch Model Analysis evaluates the quality of an assessment instrument by providing measures of respondent abilities and item difficulties, fit statistics to ensure model alignment, reliability, and separation indices for consistency, a Wright Map for visualizing the relationship between skills and difficulties, and checks for unidimensionality and potential item bias to ensure fairness and validity. The Rasch analysis further confirms the reliability and validity of the HOTS-TCA instrument, highlighting its effectiveness in measuring spatial thinking across varying ability levels. The study finds that students with high spatial ability excel in visualizing geometric relationships but struggle with complex three-dimensional tasks. In contrast, medium-ability students have difficulties with mental manipulation and real-world applications, and low-ability students face significant challenges in basic visualization and interpreting geometric structures, leading to frequent misconceptions.

Pendekatan STEM dalam Meningkatkan Kemampuan Berpikir Kreatif Matematis Syarifah Ayu; Rahayu, Wardani
Jurnal Inovasi Pembelajaran Matematika Vol. 1 No. 2 (2022): JIPM: August - January
Publisher : Rafandha Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56587/jipm.v1i2.81

Kemampuan berpikir kreatif sangat penting dimiliki setiap individu dan merupakan keterampilan esensial yang diperlukan di abad 21. Akan tetapi pada kenyataan yang ditemukan berdasarkan hasil PISA dan TIMSS menunjukkan bahwa kemampuan berpikir kreatif peserta didik Indonesia relatif rendah. Salah satu pendekatan yang dapat meningkatkan kemampuan berpikir kreatif matematis peserta didik adalah STEM (Science, Technology, Engineering, and Mathematics). Penelitian ini bertujuan untuk mendeskripsikan pendekatan STEM dan implementasi STEM dalam meningkatkan kemampuan berpikir kreatif matematis peserta didik. Metode penelitian yang digunakan adalah literature review. Artikel yang digunakan sebanyak 23 artikel terkait erat dengan kata kunci dan kriteria seleksi yang diperoleh dari Google Scholar, ResearchGate, Semantic Scholar dengan bantuan aplikasi Publish or Perish. Berdasarkan kajian literatur yang telah dipaparkan menjelaskan bahwa pendekatan STEM mengintegrasikan empat bidang ilmu Science, Technology, Engineering, and Mathematics yang mampu menghubungkan konsep pengetahuan dengan dunia nyata. Pendekatan STEM terbukti dapat meningkatkan kemampuan berpikir kreatif matematis peserta didik. Implementasi STEM dapat diintegrasikan dengan model pembelajaran Problem Based Learning (PBL), Project Based Learning (PjBL), dan model pembelajaran inquiry.

KEYAKINAN MATEMATIS DAN KEMANDIRIAN BELAJAR MAHASISWA PADA PROGRAM STUDI PENDIDIKAN MATEMATIKA [MATHEMATICAL BELIEFS AND THE SELF-REGULATED LEARNING OF STUDENTS IN A MATHEMATICS EDUCATION STUDY PROGRAM] Soesanto, Robert Harry; Rahayu, Wardani; Kartono, Kartono
JOHME: Journal of Holistic Mathematics Education Vol. 4 No. 1 (2020): DECEMBER
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/johme.v4i1.2637

In general, integral calculus courses are difficult for students because the problems involved require strong problem-solving skills. For university students, integral calculus courses also require them to do self-regulated, or independent, learning. Another aspect that makes learning difficult for these students is their mathematical beliefs and prior knowledge. This study aims to see how different types of mathematical beliefs affect self-regulated learning in terms of students' prior knowledge. This research was conducted on students in a mathematics education study program at a private university in Tangerang with a sample of 120 students. This research is an ex post facto quantitative study using a two factorial design. The variables in this study consisted of independent variables in the form of mathematical beliefs, the moderator variable in the form of students’ prior knowledge, and the dependent variable in the form of self-regulated learning. The results obtained are: (1) self-regulated learning by students with logical consistency mathematical beliefs is higher than students with memorized and procedural beliefs, (2) there is an interaction between mathematical beliefs and prior knowledge towards self-regulated learning, (3) student in the high prior knowledge gorup logical consistency beliefs had higher self-regulated learning than students with memorized and procedural beliefs, and (4) self-regulated learning in the low mathematics prior knowledge group with logical consistency beliefs is lower than students with memorized and procedural beliefs.BAHASA INDONESIA ABSTRACT: Mata kuliah kalkulus integral pada umumnya masih menjadi kesulitan bagi mahasiswa karena permasalahan yang terkandung membutuhkan pemecahan masalah yang kuat. Kalkulus integral juga membutuhkan kemandirian belajar bagi mahasiswa yang mempelajarinya. Hal lain yang menjadi kesulitan mahasiswa adalah faktor keyakinan matematis dan pengetahuan awal matematis. Penelitian ini bertujuan untuk melihat perbedaan jenis keyakinan matematis terhadap kemandirian belajar mahasiswa ditinjau dari pengetahuan awal matematisnya. Penelitian ini dilakukan terhadap mahasiswa program studi pendidikan Matematika pada salah satu universitas swasta di Tangerang dengan sampel yang digunakan sebanyak 120 orang. Penelitian ini merupakan penelitian kuantitatif ex post facto dengan menggunakan desain dua faktorial. Variabel pada penelitian ini terdiri dari variabel bebas berupa keyakinan matematis, variabel moderator berupa pengetahuan awal matematis, dan variabel terikat berupa kemandirian belajar. Hasil penelitian yang didapatkan adalah: (1) mahasiswa dengan keyakinan logical consistency memiliki kemandirian belajar lebih tinggi daripada mahasiswa dengan keyakinan hafalan dan prosedural, (2) terdapat interaksi antara keyakinan matematis dan pengetahuan awal matematis (PAM) terhadap kemandirian belajar mahasiswa, (3) mahasiswa pada kelompok PAM tinggi dengan keyakinan logical consistency memiliki kemandirian belajar lebih tinggi daripada mahasiswa dengan keyakinan hafalan dan prosedural, dan (4) mahasiswa pada kelompok PAM rendah dengan keyakinan logical consistency memiliki kemandirian belajar lebih rendah daripada mahasiswa dengan keyakinan hafalan dan prosedural.

Pengembangan Kreativitas dan Kompetensi Analisis Data Kuantitatif untuk Guru-Guru di Kepulauan Seribu Hidajat, Flavia Aurelia; Rahayu, Wardani; Meiliasari, Meiliasari
Prima Abdika: Jurnal Pengabdian Masyarakat Vol. 3 No. 3 (2023): Volume 3 Nomor 3 Tahun 2023
Publisher : Program Studi Pendidikan Guru Sekolah Dasar Universitas Flores Ende

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/abdika.v3i3.3129

This socialization aims to develop the creativity and competence of quantitative data analysis for teachers in the Thousand Islands. The method of this socialization is delivering material interactively and practically using a laptop. The participants of this socialization were 25 teachers in the Seribu Islands. This socialization was carried out for two days at the Seribu Islands school. This socialization forms teachers into groups to carry out analysis and discuss together. The results of this socialization activity are the conclusions from the results of the questionnaire after the socialization, namely (1) 100% of participants stated that they easily understood the material; (2) 92% of participants stated that the duration of the socialization was following the material presented; (3) 100% of participants stated that the presenters had detailed and clear presentation of the material; (4) 100% of participants acquire new knowledge. The socialization went smoothly because the participants were enthusiastic about practicing quantitative data analysis using SPSS. The obstacle to this socialization is the limitation of the duration of socialization activities.

Penggunaan Rasch Model untuk Menganalisis Konstruk Instrumen Resiliensi Matematis Peserta Didik Meilani, Ajeng; Rahayu, Wardani; Hidajat, Flavia Aurelia
JagoMIPA: Jurnal Pendidikan Matematika dan IPA Vol. 5 No. 1 (2025): JagoMIPA: Jurnal Pendidikan Matematika dan IPA
Publisher : Yayasan Pendidikan Bima Berilmu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53299/jagomipa.v5i1.1180

Resiliensi matematis adalah kemampuan afektif yang harus dimiliki peserta didik untuk bertahan dalam menghadapi dan mengatasi masalah di dalam pembelajaran matematika. Metode penelitian ini menggunakan metode Research Development (R&D) dan melewati serangkaian pengumpulan data: 1) perencanaan; 2) pengembangan instrumen; 3) validasi teoritik; 4) uji lapangan; 5) validasi empiris; 6) analisis instrumen. Penelitian ini bertujuan untuk menganalisis validitas konstruk instrumen resiliensi matematis peserta didik menggunakan Rasch Model. Responden pada penelitian ini sebanyak 400 peserta didik SMA di Bekasi. Analisis data yang dilakukan menggunakan metode Rasch Model dengan aplikasi Winstep versi 3.73. Hasil dari penelitian menunjukkan bahwa terdapat 27 item butir yang valid dan nilai Cronbach’s Alpha sebagai respresentasi dari interaksi antara person dengan keseluruhan item sebesar 0,83 tergolong dalam kategori baik. Nilai Person Reliability sebesar 0,80 tergolong cukup dan nilai sebesar 0,99 sebagai nilai Item Reliability. Oleh karena itu, instrumen ini dapat digunakan untuk mengukur tingkat resiliensi matematis peserta didik dengan layak dan kredibel.

Evaluating Education Cost Indices in Indonesia: A Comparative Analysis of Construction Cost Index and Purchasing Power Parity Using Empirical Methods Widiputera, Ferdi; Rahayu, Wardani; Suryadi, S
Proceedings International Conference on Education Innovation and Social Science 2024: Proceedings International Conference on Education Innovation and Social Science
Publisher : Universitas Muhammadiyah Surakarta

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

This study employs an empirical methodology to investigate the calculation of indices for determining the unit costs of equivalent education. This study compares the Construction Cost Index (CCI) and Purchasing Power Parity (PPP) in order to evaluate their relative effectiveness. A review of the existing literature on these indices reveals a need for more refined calculation and comparison methods. The study employs data from the Indonesian Central Statistics Agency (CSA), including CCI and PPP figures from 2021 and allocations for School Operational Assistance (SOA) for non-formal education in 2022, to examine the relative significance of the CCI and PPP. The findings indicate that the CCI exerts a greater influence than the PPP. Furthermore, the application of a relative importance approach through multiple regression analysis reveals a robust positive correlation between the CCI and PPP, underscoring their intricate interrelationship.

Co-Authors Achmad Ridwan Achmad Ridwan, Achmad Ade Dwi Oktaviani Ade Dwi Oktaviani Oktaviani Adi Rahman Adinda Cahyani Afriadi, Bambang Agustiani Putri Ahmad Zaeni Ahmad, Nurul Qomariyah Alifa Sabrina Amalia, Nazira Ambarwati, Lukita Amini, Ingriani Indah Anan Sutisna Andi Muhammad Ishak Anggela Soraya Anggraini, Tesi Ani Rusilowati Anny Sovia Arafiyah, Ria arnianti arnianti Arofah, Irvana Asep Sutisna Aurelia Hidajat, Flavia Awaluddin Tjalla Ayu Lestari Sardi Azima, Laely Astafiani Bahrul Hayat Bayu Gunawan Besse Arnawisuda Ningsi Burhanuddin Tola Candra Irawan Christian, Michael Bobby Corry Yohana Dadan Sumardani Dali S. Naga Dali S. Naga Dali Santun Naga Dali Santun Naga Darmastuti, Lintang Deni Iriyadi Deviana, Tina Dian Pertiwi Josua Dien Maya Alvionita Dion Aris Simanjuntak Dwi Rismi Ocy Dwi Rismi Ocy Eko Siswanto Eko Wahyudi Eko Widodo El Hakim, Lukman Elfrida Ratnawati Ellis Salsabila, Ellis Ema Noviah Erdawaty Kamaruddin Erry Utomo Erwin Sulaeman Faiza Izzati Mufti Faizah Tasya Nabila Firmansyah, Firmansyah Fitri Khairunnisa Flavia Aurelia Hidajat, Flavia Aurelia Fridani, Lara Gartika, Euis Gharitza Zahira Shofa Hajizah, Mimi Nur Hakim, Lukman El Handayani, Lisya Helli Ihsan Herlina Yuriska I Made Putrawan Iasha, Vina Ibnu Salman, Ibnu Intan Isma Fauziyah Isnurani Isnurani Iva Sarifah Jaelani Sidik Jihan Rofifah Kacep Muslim Kadir Kadir Kadir Kadir Kadir Kadir Kartono , Ketty Diana Tundoong Ketty Diana Tundoong, Ketty Diana Khairunesa Isa Khoirunnisa, Mustika Kismanto, Nugro Koeshella, Ajeng Komarudin Komarudin Larasati Rizky Putri Leny Dhianti Haeruman Lesmanawati, Yunita Lidia Lidia, Lidia Lisa Dwi Ningtyas Lubis, Risa Nursamsih Lukman El Hakim Lusi Lusiyana Makmuri Makmuri Makmuri Makmuri Makmuri Meilani, Ajeng Meilanie, R Sri Martini Meiliasari Meiliasari Meiliasari Meiliasari Meiliasari Meiliasari Merrydian, Siska Mezika Wahyuni Miiftakhul Fitri Moch. Herlan Mochamad Herlan Muhammad Dede Firman Muhammad Dwirifqi Kharisma Putra Muhammad Dwirifqi Kharisma Putra Ndoluanak, Yofran Hengki Nidia Rosita Ninik Anggraini Novaliyosi Novaliyosi Novelin Gracia Noviah, Ema Nur Sholihin Nurhasanah, Heni Nuridayanti Nuridayanti Nurjannah Nurjannah Nurjannah Ocy Dwi Rismi Ocy, Dwi Rismi Oktavia Oktavia Oktaviani, Maya Permana, Agus Agung Piliyang, Yusriizal Pinta Deniyanti Sampoerno Puri, Valendra Granitha Shandika Rahmadhani, Elfi Rahmirini Datau Raihanati Raihanati Ramadan, Awalia Nor Ratna Widyati Rini Setiawati Rini, Indah Mustika Riyadi Riyadi Riyan Arthur Rofifah, Jihan Rosita Uli Sihombing Rosita Uli Sihombing Roudloh Muna Lia Samsun, Samsun . Sembiring, Rinawati Shofa, Gharitza Zahira Simanjuntak, Dion Aris Siti Nur Cholifah Siti Rohmah Rohimah Soesanto, Robert Harry Sugeng Priyanto, Sugeng Sukarman Sukarman Sukarman Sukarman Sulaeman, Erwin Supriyadi Supriyadi Supriyati, Yetti Suraji Suraji Suryadi, S Syarifah Ayu Tengku Riza Zarzani N Tesi Anggraini Tian Abdul Aziz Tika, Neni Widias Tri Cahya Mulia Tri Suryaningsih tri wahyuni Trian Fajrianto Umar, Jahja Valeria Yekti Kwasaning Gusti Vera Maya Santi Vina Iasha Wahyu Akbari Waryadi Waryadi Widiputera, Ferdi Winona Amanda Tiara Widodo Wiwi Isnaeni Yuli Rahmawati Yunida, Helvy Yunika Apriyani Yunita Lesmanawati Zita Trisni Rahmawati Putri

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