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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 International Journal of Mathematics and Mathematics Education (IJMME) Science and Technology: Jurnal Pengabdian Masyarakat
Ismail, Raoda
Cenderawasih University
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Education Health Professions 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.
Penerapan Model Auditory Intellectually Repetition (AIR) pada Materi Menentukan Penyelesaian Persamaan Kuadrat dengan Cara Memfaktorkan Sirampun, Elsi; Happy Lumbantobing; Yosefin Rianita Hadiyanti; Bettisari Napitupulu; Pitriana Tandililing; Dewi kristika Findya Ning Tyas; Mayor M.H. Manurung; Raoda Ismail; Agnes Teresa Panjaitan; Rina Ananta Sumawardani Sitepu; Rian Efendi; Elieser Kulimbang; Martinus Ruamba
Science and Technology: Jurnal Pengabdian Masyarakat Vol. 2 No. 4 (2025): Desember
Publisher : CV. Science Tech Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69930/scitec.v2i4.668

Abstract

Kegiatan pengabdian ini bertujuan untuk mengatasi permasalahan dalam pembelajaran. Berdasarkan hasil observasi pada saat kegiatan belajar matematika di kelas VIII E SMP Negeri 1 Sarmi bersama guru mata pelajaran matematika, diperoleh beberapa masalah yang terjadi pada saat proses belajar mengajar berlangsung yaitu pembelajaran yang diberikan oleh guru masih menggunakan pembelajaran dengan metode ceramah yang berpusat pada guru sehingga peserta didik kurang aktif baik itu bertanya ataupun menjawab pertanyaan. Berdasarkan hasil pengamatan diatas maka penerapan model pembelajaran merupakan solusi yang dapat gunakan oleh guru dalam mengelola kelas menjadi lebih menyenangkan dan lebih mengutamakan keaktifan peserta didik serta memberikan kesempatan kepada peserta didik untuk mengembangkan potensinya secara maksimal. Model pembelajaran yang dimaksud adalah model pembelajaran cooperatif tipe Auditory Intellectually Repetition (AIR). Berdasarkan hasil Kegiatan Pengabdian Kepada Masyarakat di kelas IX A SMP Negeri 1 Demta diperoleh pertama Keaktifan peserta didik dilihat dari penilaian sikap setelah dilakukan pembelajaran dengan menggunakan model pembelajaran kooperatif tipe Auditory Intellectually Repetition (AIR pada materi barisan aritmatika di kelas VIII SMP Negeri 1 Sarmi baik; kedua Hasil belajar peserta didik setelah dilakukan proses pembelajaran dengan menggunakan model pembelajaran kooperatif Auditory Intellectually Repetition (AIR pada materi persamaan kuadrat di kelas IX A SMP Negeri 1 Demta mengalami peningkatan dilihat dari hasil pretes dan posttest.
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
Co-Authors Agnes Teresa Panjaitan Awiyadi, Badai Purwa Bettisari Napitupulu Bettisari Napitupulu Dewi kristika Findya Ning Tyas Elieser Kulimbang Farida Agus Setiawati Febriani Safitri Happy Lumbantobing Heri Retnawati Martinus Ruamba Mayor M.H. Manurung Mayor M.H. Manurung Okky Riswandha Imawan Pitriana Tandililing Purwoko Haryadi Santoso Rian Efendi Rina Ananta Sumawardani Sitepu Sirampun, Elsi Sugiman Sugiman Yosefin Rianita Hadiyanti