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All Journal Pythagoras: Jurnal Matematika dan Pendidikan Matematika Jurnal Pengukuran Psikologi dan Pendidikan Indonesia (JP3I) REiD (Research and Evaluation in Education) JMM (Jurnal Masyarakat Mandiri) Jurnal Pendidikan Matematika (JUDIKA EDUCATION) JUPE : Jurnal Pendidikan Mandala Jurnal Pendidikan dan Kewirausahaan INCOME: Indonesian Journal of Community Service and Engagement International Journal of Mathematics and Mathematics Education (IJMME)
Ismail, Raoda
Cenderawasih University
Humanities Education Mathematics Social Sciences Other

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Optimal Scale Points for Reliable Measurements: Exploring the Impact of Scale Point Variation Ismail, Raoda; Retnawati, Heri; Sugiman, Sugiman; Setiawati, Farida Agus; Imawan, Okky Riswandha; Santoso, Purwoko Haryadi
JP3I (Jurnal Pengukuran Psikologi dan Pendidikan Indonesia) Vol. 13 No. 1 (2024): JP3I
Publisher : FAKULTAS PSIKOLOGI UIN SYARIF HIDAYATULLAH JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jp3i.v13i1.34173

Abstract

Ensuring reliable measurements is crucial for minimising errors in assessments. The assessmentcommunity commonly employs the evaluation of reliability coefficients to estimate the dependability oftest scores. Despite its significance, limited research has explored the relationship between the estimated reliability coefficient and the number of scale points utilised. This study aims to provide valuable insights to practitioners by investigating the optimal number of scale points required for the most accurate reliability coefficient estimation. Using simulated data, the research scrutinises scales with varying points, ranging from 2 to 11. The results reveal a substantial impact of the number of scale points on reliability estimation. The most accurate estimate of reliability is obtained for scales with 8 points. This study helps us understand the optimal number of scale points for reliable measurements and guides future assessment improvements.
Cluster analysis of the national examination: School grouping to maintain the sustainability of high school quality Ismail, Raoda; Retnawati, Heri; Imawan, Okky Riswandha
REID (Research and Evaluation in Education) Vol. 8 No. 1 (2022)
Publisher : Graduate School of Universitas Negeri Yogyakarta & Himpunan Evaluasi Pendidikan Indonesia (HEPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/reid.v8i1.45872

Abstract

This study aims to classify high schools in Papua Province, Indonesia, based on the 2019 National Examination scores so they can be considered in maintaining the sustainability of school quality in Papua. In this study, all senior high schools in Papua Province were grouped into three clusters: Cluster 1 (high), Cluster 2 (medium), and Cluster 3 (low clusters) using the K-Means Algorithm on the 2019 National Examination data. The data were obtained through the website official Center of Educational Assessment of the Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia. Clarification was done by grouping data on national examination scores from each school based on the similarity of the data with data from other schools. The results of the high school clustering using the K-Means Algorithm show that 18 schools are in Cluster 1, 58 schools in Cluster 2, and 68 schools in Cluster 3. The results of the analysis of the K-Means Algorithm show an R2 value of 0.723 and a Silhouette score of 0.42.
Peningkatan Hasil Belajar pada Materi Refleksi Berbantuan Geogebra Awiyadi, Badai Purwa; Napitupulu, Bettisari; Ismail, Raoda
Jurnal Pendidikan Matematika : Judika Education Vol. 9 No. 1 (2026): Jurnal Pendidikan Matematika: Judika Education
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/2hx6mn64

Abstract

This study aims to improve students' cognitive learning outcomes, conceptual understanding, and learning activities through the implementation of the Guided Discovery Learning (GDL) model assisted by GeoGebra. The study used a Classroom Action Research (CAR) approach implemented in two cycles, each including planning, action implementation, observation, and reflection, with 30 students of class XI-A of SMA Negeri 1 Edera as subjects. Data were collected through learning outcome tests and observations of student activities, then analyzed descriptively quantitatively and qualitatively. The results showed an increase in the average value of student learning outcomes from 49.58 in Cycle I to 84.42 in Cycle II, as well as an increase in classical learning completeness from 20% to 86.67%. Students' conceptual understanding increased, indicated by the ability to explain changes in coordinates resulting from reflection and distinguish reflections on axes and lines more precisely. Students' learning activities also increased from the active category to very active. Thus, it can be concluded that the implementation of the Guided Discovery Learning model assisted by GeoGebra is effective in improving the quality of the process and results of mathematics learning on reflection material.   Keywords: Student Activities, GeoGebra, Learning Outcomes, Reflection
Investigating Differential Item Functioning (DIF) in Geometry Test Scores: Holistic vs. Analytical Scoring Rubrics Ismail, Raoda; Imawan, Okky Riswandha; Retnawati, Heri; Haryanto
JP3I (Jurnal Pengukuran Psikologi dan Pendidikan Indonesia) Vol. 15 No. 1 (2026): JP3I
Publisher : FAKULTAS PSIKOLOGI UIN SYARIF HIDAYATULLAH JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jp3i.v15i1.40842

Abstract

The use of polytomous data in test instruments enables more detailed assessment of test-takers' abilities, but group differences, such as gender, class, and ethnicity, are often overlooked. Differential Item Functioning (DIF) analysis helps determine whether these identities influence test performance. This descriptive quantitative study examines DIF in geometry tests using Holistic and Analytical Scoring Rubrics across gender, class, and ethnic groups. The study involved 102 undergraduate students from Cenderawasih University, Papua, who completed a geometry test with 10 descriptive questions. Two scoring rubrics were used: the Holistic Scoring Rubric with three categories and the Analytical Scoring Rubric with five. Results were analyzed with the difR package in the R Program. The criterion for detecting DIF is a p-value less than 0.05. Findings show that some test items exhibit DIF concerning gender, class, and ethnicity. The DIF detected for the holistic scoring rubric is items 1, 6, 7, and 10 for the gender group; items 1, 4, 5, and 8 for the class group; and items 1, 2, and 6 for the ethnic group. Meanwhile, the DIF detected for the analytic scoring rubric is item 10 for the gender group; items 9 and 10 for the class group; and item 10 for the ethnic group. However, not all DIF items are flawed; some assess fundamental skills. The Analytical Rubric demonstrated slightly higher reliability (alpha 0.903) than the Holistic Rubric (alpha 0.804). These insights support the development of more equitable and sustainable assessment practices, ensuring fairness and inclusivity in educational evaluations.
Implementasi Buku Paket Kontekstual Papua (BPKP) untuk Reduksi Beban Administratif dan Potensi Mitigasi Burnout Calon Guru SD Tifanny Shahnaz Rusli; Lidwina Cornelia Maniboey; Rispah Purba; Martijn van Driel; Raoda Ismail
INCOME: Indonesian Journal of Community Service and Engagement Vol 5 No 2 (2026)
Publisher : EDUPEDIA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/income.v5i2.2196

Abstract

Beban administratif klerikal, khususnya penyusunan Rencana Pelaksanaan Pembelajaran (RPP) atau Modul Ajar yang repetitif, telah teridentifikasi sebagai salah satu faktor kontributor terhadap kelelahan kerja (burnout) pada pendidik di sekolah dasar. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk mengintervensi masalah manajerial tersebut melalui pelatihan literasi dan numerasi menggunakan Buku Paket Kontekstual Papua (BPKP) yang melibatkan 61 mahasiswa calon guru PGSD Universitas Cenderawasih. Evaluasi program menggunakan mixed-method sederhana, memadukan pengukuran statistik deskriptif (pre-test/post-test) dan pendekatan Natural Language Processing (NLP) menggunakan perangkat lunak LONTAR untuk mengekstraksi sentimen psikologis pasca-pelatihan. Hasil evaluasi kognitif menunjukkan peningkatan dari Mean 3,87 (SD=1,02) menjadi 4,57 (SD=0,50), diiringi dengan skor kebermanfaatan 4,90 dari 5,00. Analisis NLP mengonfirmasi bahwa 85,25% umpan balik partisipan didominasi oleh sentimen positif terkait efisiensi beban kerja. Temuan empiris memvalidasi bahwa keberadaan RPP terintegrasi dalam BPKP berpotensi memfasilitasi reduksi waktu persiapan mengajar, sehingga memberikan ruang kognitif yang lebih memadai bagi calon pendidik untuk berfokus pada pendekatan pedagogik di kelas awal.
Kesiapan Adaptasi Sosio-Pedagogik Calon Guru Pedalaman Papua: Analisis Peta Konseptual Semantik Efektivitas Buku Paket Kontekstual Papua (BPKP) Lely Yustina Wati; Chelsi Yuliana; Endriani; Martijn van Driel; Raoda Ismail
INCOME: Indonesian Journal of Community Service and Engagement Vol 5 No 2 (2026)
Publisher : EDUPEDIA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/income.v5i2.2197

Abstract

Tantangan terbesar pendidikan dasar di daerah terluar dan pedalaman bukan semata pada infrastruktur fisik, melainkan pada ketidaksesuaian sosiologis antara bahan ajar dengan realitas kultural peserta didik. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk mengintervensi kesiapan adaptasi calon pendidik (mahasiswa PGSD) dalam menghadapi tantangan mengajar di pedalaman Papua melalui pelatihan Buku Paket Kontekstual Papua (BPKP). Kegiatan ini melibatkan 61 mahasiswa program studi PGSD Universitas Cenderawasih. Evaluasi program menerapkan metode campuran (mixed-method), memadukan pengukuran statistik deskriptif (pre-test/post-test) dan analisis kualitatif komputasional menggunakan perangkat lunak LONTAR. Hasil evaluasi kognitif menunjukkan peningkatan pemahaman yang konsisten dari Mean 3,87 (SD=1,02) menjadi 4,57 (SD=0,50), diiringi skor kebermanfaatan 4,90 dari 5,00. Analisis Concept Mapping (Peta Konseptual Semantik) berbasis algoritma N-Grams pada LONTAR mengonfirmasi adanya keterkaitan leksikal yang sangat kuat antara konsep kesiapan mengajar dengan wilayah pedalaman. Jejak audit kualitatif memvalidasi bahwa BPKP berpotensi mentransformasi kecemasan geografis menjadi resiliensi pedagogik. Inovasi sosiologis ini diindikasikan mampu membekali calon guru dengan kerangka kerja kontekstual yang esensial sebelum mereka ditempatkan di sekolah-sekolah terpencil.
Co-Authors Agnes Teresa Panjaitan Awiyadi, Badai Purwa Bettisari Napitupulu Bettisari Napitupulu Chelsi Yuliana S Dewi kristika Findya Ning Tyas Elieser Kulimbang Endriani Farida Agus Setiawati Happy Lumbantobing HARYANTO Heri Retnawati Lely Yustina Wati Lidwina Cornelia Maniboey Martijn van Driel Martinus Ruamba Mayor M.H. Manurung Mayor M.H. Manurung Okky Riswandha Imawan Pitriana Tandililing Purba, Rispah Purwoko Haryadi Santoso Rian Efendi Rina Ananta Sumawardani Sitepu Safitri, Febriani Sirampun, Elsi Sugiman Sugiman Tifanny Shahnaz Rusli Yosefin Rianita Hadiyanti