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All Journal International Journal of Evaluation and Research in Education (IJERE) Pythagoras: Jurnal Matematika dan Pendidikan Matematika Jurnal Infinity Jurnal Varidika Jurnal Elemen IJHCM (International Journal of Human Capital Management) Journal of Honai Math IRJE (Indonesian Research Journal in Education) International Journal on Emerging Mathematics Education Jurnal Pendidikan Matematika (Jupitek) Asimtot : Jurnal Kependidikan Matematika Jurnal Magister Pendidikan Matematika (JUMADIKA) Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan MATH-EDU: Jurnal Ilmu Pendidikan Matematika Bulletin of Pedagogical Research Parta: Jurnal Pengabdian Kepada Masyarakat Indonesian Journal Of Educational Research and Review Journal of Mathematics Instruction, Social Research and Opinion Jurnal Pengabdian Sains dan Humaniora Kreasi: Jurnal Inovasi dan Pengabdian Kepada Masyaraka Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya Jurnal Masyarakat Mengabdi Nusantara Jurnal Nusantara Berbakti Jurnal Infinity
Hermina Disnawati, Hermina
Program Studi Pendidikan Matematika Universitas Timor
Religion Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Social Sciences Other

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Research trend on dyscalculia by bibliometric analysis during 2017-2022 Deda, Yohanis Ndapa; Disnawati, Hermina; Ekawati, Rooselyna; Suprapto, Nadi
International Journal of Evaluation and Research in Education (IJERE) Vol 13, No 1: February 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijere.v13i1.25992

Abstract

Dyscalculia is the inability to perform simple numerical calculations in everyday life. However, no one has researched this topic worldwide in about two years. This study aimed to investigate the research trends on dyscalculia through bibliometric studies and research issues related to dyscalculia in the Scopus database starting 2017 to October 2022. The sample consisted of 536 total documents. The results showed that scientific publications on dyscalculia fluctuated. In the next five years, its movements cannot be predicted. The highest number of document types is articles, which is 369. The number of cross-border documents from 2017 to 2022 is in the United States, as many as 75 papers, and in Italy, 74 copies. These two countries are more dominant on the topic of dyscalculia. Furthermore, 536 documents comprising 94.4% of articles were used in English. In general, in research on dyscalculia, researchers produce four out of five significant clusters: patient, approach, task, and grade. However, topics related to dyscalculia and mathematics often studied are deficit students, deficit addition and subtraction, mathematics difficulty, instruction, and primary school. The results can be used to shed light on developing tendencies in dyscalculia investigations and suggest directions for future studies.
Ethnomathematical investigation of traditional games for cultural preservation in the Indonesia-Timor Leste border region Deda, Yohanis Ndapa; Disnawati, Hermina
Journal of Honai Math Vol. 7 No. 1 (2024): Journal of Honai Math
Publisher : Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jhm.v7i1.512

Abstract

Traditional games offer children numerous benefits, including health, character development, and educational resources. However, these games have yet to be explored as learning tools for students with dyscalculia, particularly in border areas. This research aims to investigate the mathematical concepts embedded in traditional games as part of the local culture in the Indonesia-Timor Leste Border Area (ITLBA) community. Employing an exploratory approach with an ethnographic methodology, the study utilized documentation, observation, and interviews involving 13 children aged 7-14 years and five informants from the border area. Findings revealed mathematical concepts, including geometry and numerical concepts, within traditional games such as Galah Asin, Kelereng, Siki Doka, and Congklak. Moreover, these games instilled character values such as patriotism and sportsmanship. Children in the ITLBA region benefited from traditional games through social interaction, fostering kinship, cooperation, responsibility, and enhancing psychomotor skills. Ethnomathematics research on traditional games at ITLBA suggests utilizing these games as a platform for mathematics education, especially for students with disabilities. Leveraging classic games can help bridge the gap for students with disabilities, facilitating their numerical skills development within the educational context.
Who Reaches the Top? Investigating Gender-Based Performance and Maximum Score Gaps in University Entrance Exams Disnawati, Hermina; Dwiningrum, Siti Irene Astuti; Deda, Yohanis Ndapa; Rashid, Salman; Dos Santos, Mariano
Journal of Mathematics Instruction, Social Research and Opinion Vol. 4 No. 2 (2025): June
Publisher : MASI Mandiri Edukasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58421/misro.v4i2.524

Abstract

Disparities in the academic readiness of first-year university students remain evident, continuing to challenge higher education systems, particularly when entrance assessments fail to reflect foundational competencies accurately. This study investigates whether gender-based differences exist in entrance exam performance and analyzes students' maximum scores to assess peak academic achievement in two core domains: English proficiency and Quantitative Knowledge. The research was conducted at a public university in East Nusa Tenggara, Indonesia, involving 1,186 students admitted through the independent selection pathway. A comparative quantitative approach was applied using descriptive statistics, Welch’s t-test, and boxplot visualizations in JASP 0.18.3 software. The results showed no statistically significant gender differences in either domain (English: p = 0.504, d = 0.040; Quantitative: p = 0.543, d = –0.036), with nearly identical mean scores and score variability. However, the maximum scores of 17/20 in English and 13/20 in Quantitative Knowledge were far below the full mark, indicating systemic gaps in academic preparedness and possible ceiling effects in test design. These findings support the need to redesign entrance assessments using Item Response Theory (IRT) and to implement bridging or matriculation programs. These interventions can help universities and policymakers ensure fairer and inclusive pathways to promote equitable access and success in higher education.
Development of Calculus Teaching Material: Context of Universitas Timor, Indonesia Deda, Yohanis Ndapa; Disnawati, Hermina
International Journal on Emerging Mathematics Education IJEME, Vol. 4 No. 2, September 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/ijeme.v4i2.15976

Abstract

This research development aims to producing a valid, practical, and useful deferential calculus teaching material. The teaching material referred to this study is a student worksheet with a constructivism approach. Itapplied development research method with formative research type. It was conducted in two stages, namely preliminary analysis and formative evaluation stage.The results of the experts'validation stated that the teaching material developed has reached thecorrect category. The results of one-on-one trials class indicate that the developed the material can be accepted and be used. Furthermore, field trial results, which was conducted to see the effectiveness aspect, have met the criteria. In the other world, the current research has produceda valid, practical, and usefulderivative calculus teaching material that focuses on teaching material and its supporting components, including syllabus, and lesson plans.
ANALISIS KESULITAN SISWA DALAM MENYELESAIKAN SOAL RELASI MENGGUNAKAN CERTAINTY OF RESPONSE INDEX (CRI) Kefi, Margaretha E; Disnawati, Hermina; Suddin, Sulasri
Jurnal Pendidikan Matematika (JUPITEK) Vol 4 No 1 (2021): Jurnal Pendidikan Matematika (JUPITEK)
Publisher : Program Studi Pendidikan Matematika FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jupitekvol4iss1pp21-26

Abstract

Penelitian ini bertujuan untuk mengetahui bentuk-bentuk kesulitan siswa dalam menyelesaikan soal relasi berdasarkan kriteria Certainty of Response Index (CRI) yaitu siswa yang tidak paham konsep (lucky guess), tidak paham konsep (a lack of knowlegde) dan miskonsepsi. Penelitian diskriptif kualitatif ini menggunakan metode tes dan wawancara untuk memperoleh data bentuk kesulitan, siswa sebagai subjek penelitian adalah siswa kelas VIII yang telah mempelajari materi relasi. Hasil penelitian menunjukan bahwa sesuai kriteria CRI, tentang paham konsep lucky guess terdapat 11 kesulitan, terdapat 10 kesulitan pada bentuk paham konsep namun menebak dan tentang miskonsepsi terdapat 14 jenis kesulitan. Jenis kesulitan dalam memahami prinsip, kriteria CRI paham konsep (lucky guess) terdapat 9 kesulitan, pada kriteria paham konsep namun menebak (a lack of knowlegde) terdapat 9 kesulitan dan kategori miskonsepsi terdapat 18 kesulitan
MISKONSEPSI MAHASISWA PADA MATERI HIMPUNAN: ANALISIS MENGGUNAKAN KRITERIA CERTAINTY OF RESPONSE INDEX Disnawati, Hermina; Deda, Yohanis Ndapa
Jurnal Pendidikan Matematika (JUPITEK) Vol 4 No 2 (2021): Jurnal Pendidikan Matematika (JUPITEK)
Publisher : Program Studi Pendidikan Matematika FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jupitekvol4iss2pp95-102

Abstract

This research aims to find out the misconceptions of students about the concept of the set using certainty of response index (CRI) indicators. The research subjects consisted of 89 students who programmed the Introduction to Basic Mathematics (PDM) course. The research method used is qualitative descriptive. A written test consisting of 4 reasoned multiple choice and descriptive questions were used to collect research data. The results showed that based on CRI criteria, for problem number 1 about the differences of set and not sets, there were 39% of students experiencing misconceptions, 33% of students do not know the concept and 28% of students who know the concept correctly. In question number 2, the questions about three ways of presenting a set of natural, whole, prime and integers numbers, it was found that 12% of students experienced misconceptions and 76% of students did not know the concept because of guessing and lack of knowledge, the remaining 11% of students understand the concept very well. For problem number 3, about the operation of the set found that 30% of students experienced misconceptions, 45% did not know the concept and the remaining 24% understood the concept correctly. Furthermore, for problem number 4, the set operation story was obtained the result that of 19% of students who took the test experienced misconceptions, 57% of students did not understand the concept and only 24% of students understood the concept correctly. In other words, of the 4 questions that were tested on students, questions number 1 and 3 were mostly found by students experiencing misconceptions. Although problem number 2, it was found that at least students experienced misconspection but in this questions almost 80% of students did not know the concept correctly
EFEKTIFITAS PENGGUNAAN MEDIA PEMBELAJARAN MATEMATIKA BERBAHAN SAMPAH UNTUK MENGURANGI LEARNING LOSS AKIBAT PANDEMI COVID-19 Deda, Yohanis Ndapa; Disnawati, Hermina
Jurnal Magister Pendidikan Matematika (JUMADIKA) Vol 4 No 2 (2022): Jurnal Magister Pendidikan Matematika (JUMADIKA)
Publisher : Prodi Magister Pendidikan Matematika Pascasarjana Universitas Pattimura Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jumadikavol4iss2year2022page37-42

Abstract

During the Covid-19 pandemic, there was a change in the education system, namely regular or face-to-face learning suddenly changed to learning from home (BDR). One of the difficulties is the change in the direct learning climate to online learning, which is done individually. This difficulty resulted in learning loss for students. Learning loss has a long-term negative impact, namely reduced student academic achievement and cognitive skills. Therefore, it is necessary to choose learning media to minimize learning loss due to BDR during the Covid-19 pandemic. One learning media that is suitable for the conditions of the learning community in Kefamenanu City is the Mathematics learning media made from Waste (MPMBS), namely positive and negative charges. This study aims to reduce learning loss for students in the learning community in the city of Kefamenanu. The type of research is an experimental, pre-Experimental Design, namely a One-Group Pretest-Posttest with 11 students in the Sunday school community at one of the GMIT Churches in Kefamenanu. Data collection methods are tests, questionnaires and documentation. The data analysis techniques are descriptive statistical analysis, N-Gain analysis and inferential analysis. The results showed that the average value of the pretest was 33, and the average value of the posttest was 57.17. There was an increase after the students were given the learning treatment using MPMBS with a charge of 27.57 and an average N-gain of 0.64, including the medium category. Based on the results of this study, it can be concluded that the use of waste-based MPMBS in learning integer operations can improve learning achievement while reducing learning loss in the community of Sunday school children in Kefemenanu. The next plan that will be done is to analyze the level of motivation of respondents to the use of MPMBS
Research Trends on Lesson Study Based on Google Scholar and Scopus Database: a Bibliometric Analysis Deda, Yohanis Ndapa; Disnawati, Hermina; Daniel, Otaget
Jurnal VARIDIKA Volume 35, No 1 June 2023
Publisher : Faculty of Teacher Training and Education, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/varidika.v1i1.22663

Abstract

This study investigates lesson study research trends through bibliometric analysis on widely distributed Google Scholar (GS) and Scopus databases. We reviewed 997 papers from GS and 200 documents from the Scopus database searched using Harzing's Publish on May 6 2023. A descriptive study approach was used to investigate the data. The result of this study is that the number of lesson study documents has increased over the last decade (2012-2022). The most productive author based on GS  is R Huang from the United States, and the full author based on Scopus is E. Saito from Australia. While the prominent authors based on the highest citations are Fernandez Yoshida, based on GS, and Dudley, with the highest citations based on Scopus. The “International Journal for Lesson and Learning Studies” in the last decade is the most source of lesson study documents. Based on VosViewer visualization, Rosa is the author who has the most co-authorship papers and total link strength. The VosViewer displays four clusters related to lesson study: community, context, observation, and participation. Our strong recommendations regarding this study are lesson study research related to literacy, numeracy, and mathematical abilities. The results can assist relevant researchers in understanding trends in lesson study research and recommend guidelines for other studies.
Efektivitas “Puzzle Rumah Perkalian” dalam Menunjang Konsep Matematika Dasar Murid Slow Learner di Kawasan Perbatasan Ndapa Deda, Yohanis; Disnawati, Hermina; Roberto Kasa , Andreas; Owa , Florida; Kusi , Esterlin
Parta: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2023)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/parta.v4i2.4592

Abstract

Kegiatan ini didasari learning loss pada saat Covid-19 yang berdampak munculnya murid slow learner akibat adanya kebijakan belajar dari rumah. Tujuan kegiatan ini adalah untuk menguji tingkat efektivitas “Puzzle Rumah Perkalian” dalam menunjang konsep matematika dasar murid slow leraner di Kawasan Perbatasan Darat Indonesia dengan Republik Demokratik Timor Leste. Metode yang digunakan adalah metode kuantitatif dengan jenis eksperimen, yaitu One-Group Pretest-Posttest. Tahapan pelaksanaan penelitian ini dimulai dari perencanaan, pelaksanaan pre test, eksperimen dan postest. Jumlah murid yang terlibat adalah 18 orang siswa sekolah dasar kelas 4. Metode pengumpulan informasi merupakan tes, serta dokumentasi. Metode analisa data yang dipakai merupakan analisa statistik deskriptif, analisa N- Gain serta analisa inferensial. Hasil riset membuktikan kalau nilai rerata pretest merupakan 40,51 serta nilai rerata post test merupakan 66,29. Nyata kalau terjadi kenaikan sehabis peserta didik dikasihkan perlakuan Pembelajaran matematika memakai“ Puzzle Rumah Perkalian” sebesar 25,78 serta rerata N-gain ialah 0,43 termasuk kategori sedang. Bersumber pada hasil studi ini, bisa disimpulkan kalau aplikasi “Puzzle Rumah Perkalian” pada pembelajaran matematika materi operasi bilangan bulat khususnya pada operasi perkalian bisa mendukung matematika dasar anak didik slow learner di Area Perbatasan. Konsep berikutnya yang hendak digarap merupakan meningkatkan alat pembelajaran matematika yang sesuai buat anak didik slow learner di Area Perbatasan.  
Co-Authors Anastasia N. Ernesta Manbait Ando Missa Bees, Nene Lodiana Daniel, Otaget Deda, Yohanis Ndapa Dos Santos, Mariano Elianus Ukat Farly O.Haning Farly Oktriany Haning Fatima Halek, Erlin Heldigardis Kolo Kefi, Margaretha E Kusi , Esterlin Lidwina Felisima Tae Lika, Ernestina LUDGARDIS LEDHENG Marchy Pallo Maria Biamsasi Merlina Sopbaba Milton Rosa Nadi Suprapto Owa , Florida Pala Bani, Marlinda Rashid, Salman Ratu Ilma Indra Putri Roberto Kasa , Andreas Rooselyna Ekawati Rosa, Milton Selestina Nahak Siahaan, Meiva Marthaulina Lestari Siti Irene Astuti Dwiningrum Stanislaus Amsikan Sulasri Suddin Tae, Rut Tamur, Maximus Timo, Frederikus Yusuf Hartono Zulkaidah Nur Ahsan