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All Journal Journal of Education and Learning (EduLearn) Edumatsains Martabe : Jurnal Pengabdian Kepada Masyarakat Journal of Educational Research and Evaluation Jurnal Riset Pendidikan dan Inovasi Pembelajaran Matematika (JRPIPM) Range : Jurnal Pendidikan Matematika Al Jahiz: Journal of Biology Education Research Brillo Journal Jurnal Pengabdian Sains dan Humaniora Jurnal Pengabdian Pada Masyarakat International Journal of Didactic Mathematics in Distance Education
Candra Ditasona
Universitas Kristen Indonesia
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Exploring Ethnomathematics in Batak Toba Carvings for Locally-based Mathematics Teaching Material Ditasona, Candra
Journal of Education Reseach and Evaluation Vol 7 No 3 (2023): August
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jere.v7i3.66787

Abstract

As one of the traditional ornaments of the Batak Toba tribe, "gorga" carries philosophical meaning and serves to embellish the decoration of traditional houses. The gorga motif has its own distinctive characteristics, with closely arranged patterns and symmetrical designs. This indicates the presence of mathematical aspects within these carved gorga patterns. This research aims to analyze the symmetries embedded in the gorga motifs that can be utilized as locally-based mathematics teaching material. The study is conducted by exploring various gorga motifs and analyzing their types of symmetry. The research is employing an ethnographic research approach. Data is collected through observing buildings adorned with gorga motifs, studying literature, and conducting interviews with gorga carvers. Qualitative data analysis can be started with data reduction, data presentation, drawing conclusions and verification. The research findings reveal the existence of seven types of symmetry obtained from all gorga motifs. These symmetry types include translation symmetry, glide reflect symmetry, vertical symmetry, rotation 180° symmetry, vertical and  rotation 180° symmetry, horizontal symmetry, and vertical and horizontal symmetry.
Improving Mathematical Understanding on Geometry for 9th Grade Students through Three-Dimensional Mathematics Learning Media Based on Virtual Reality Simbolon, Kerdid; Ditasona, Candra; Setiawan, Laurencia Firstania
Brillo Journal Vol 4 No 1 (2024): Innovative Strategies to Enhance Mathematics Learning Effectively
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v4i1.71

Abstract

This study aimed to develop a three-dimensional virtual reality (VR)-based learning media for teaching mathematics at 9th grade students, focusing on improving students' understanding of geometric shapes. Utilizing the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model, the research involved the development of an interactive VR tool that allows students to engage with complex geometric concepts in an immersive environment. The VR media was validated by subject learning material experts in terms of content, language, and technical aspects, resulting in an overall validity score of 4.04, indicating high validity. Implementation quantitative analysis showed that the tool significantly improved student comprehension, with an average practicality score of 3.81, indicating that the media was easy to use in the classroom. This study concludes that VR-based learning media offers a promising approach to overcoming the difficulties students face in understanding three-dimensional geometry, providing both an engaging and effective learning experience.
Smart Social Media Education: Preventing Hoaxes and the Spread of False Content Among Vacational High School Student Simorangkir, Melda; Sinaga, Dameria; Susilo, Susilo; Male, Hendrikus; Ditasona, Candra; Kristina, Nugra Heni
Jurnal Pengabdian Sains dan Humaniora Vol. 4 No. 1 (2025): 2025 May Edition
Publisher : Fakultas Keguruan dan Ilmu Pendidikan-Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpsh.v4i1.9155

Abstract

The spread of hoakses in Indonesia continues to rise, as recorded by the Ministry of Communication and Informatics (Kominfo), with more than 770 hoakses identified between August 2018 and February 2019. This phenomenon indicates that hoakses pose a serious threat, requiring continuous education and intervention efforts. Therefore, this Community Service Program (PKM) aims to enhance students' digital literacy in recognizing, identifying, and countering fake news on social media.  The workshop was conducted at SMKN 1 Klaten, involving 120 twelfth-grade students from the multimedia department. The method used in this program was an interactive workshop that included education on hoakses, practical exercises in identifying false information, and discussions on the social impact of hoaks dissemination.  Through this activity, students were equipped with the skills to become critical and responsible consumers of information in the digital era. The training, which lasted for five class hours, successfully engaged students, as evidenced by the numerous questions that arose throughout the session. It is hoped that this initiative will contribute to creating a safer digital environment and support government efforts to improve digital literacy among the younger generation.
Evaluating the impact of Kampus Mengajar Program: a comparative study of student literacy and numeracy skills outcomes Ditasona, Candra; Junsay, Merle; Purba, Santri Chintia; Pardosi, Deborah
International Journal of Didactic Mathematics in Distance Education Vol. 2 No. 2 (2025): ijdmde
Publisher : Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/ijdmde.v2i2.11405

Abstract

Indonesia's literacy and numeracy competencies remain critically low despite marginal improvements in PISA scores from 2018 to 2022, which paradoxically declined overall. To address this educational crisis, the Indonesian government launched the Kampus Mengajar program, deploying university students to enhance primary school literacy and numeracy outcomes. This study evaluates the effectiveness of the Kampus Mengajar program by analyzing changes in students' Minimum Competency Assessment (MCA) performance. A pre-experimental design was employed with 30 fifth-grade students from SDN 13 East Jakarta, selected through purposive sampling. Data collection occurred over four months using pre-test-post-test instruments, supplemented by classroom observations. Statistical analysis was conducted using SPSS, including descriptive statistics, Shapiro-Wilk normality tests, and paired t-tests. The findings reveal significant improvements in both literacy and numeracy MCA scores following the Kampus Mengajar intervention. Statistical analysis confirmed meaningful differences between pre-test and post-test performance, demonstrating the program's positive impact on student competencies. The research identified that enhanced teaching methodologies and additional academic support contributed to measurable learning gains. This study contributes empirical evidence supporting the effectiveness of collaborative university-school partnerships in addressing Indonesia's literacy and numeracy challenges. The results suggest that the Kampus Mengajar model represents a viable strategy for educational improvement. However, successful implementation requires adequate school infrastructure and resources. Future research should investigate the long-term sustainability of these improvements and explore optimal teaching methodologies within the Kampus Mengajar framework to maximize elementary students' MCA outcomes.
The Development of Student Worksheet Based on Problem Based Learning Approach on Matrices Topics Aneliana, Aneliana; Ditasona, Candra; Manalu, Risma Uly
Brillo Journal Vol 2 No 1 (2022): Students’ Creation and Constructivist Approach in Learning Media
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v2i1.23

Abstract

This study aims to develop Problem Based Learning (PBL)-based worksheets to improve student’s critical thinking skills in contextual problem solving. The research design used is a feasibility analysis by research and development methods. The research was carried out using research and development (R&D) research and development methods. The sample consisted of 40 students from science programs in 11th grade. The data collection instrument used is the expert assessment sheet, student responses to the created worksheet. The development procedure with 8 stages namely potentials and problems, information gathering, product design, expert validation, first revision, product trial, second revision, final product. From the results obtained the average feasibility value by the media is 81.46% (very feasible), the average graphic feasibility value is 81.85% included in the very feasible criteria, the language eligibility average value is 76% included in the appropriate criteria and the average value of student responses is (87.40%) (very positive).
Development of Worksheets Based on the Metaphorical Thinking Approach for Students’ Procedural Fluency Ability Sartika, Nenden Suciyati; Kusuma, Yaya S.; Martadiputra, Bambang Apiv Priatna; Ditasona, Candra; Safitri, Mia Millawaty
Brillo Journal Vol 2 No 1 (2022): Students’ Creation and Constructivist Approach in Learning Media
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v2i1.25

Abstract

The mathematics materials in learning mostly used package books, but the provided resources in the school were limited and teachers did not optimize the existing technology to provide effective and interesting materials. As a consequence, students did not complete the exercise according to mathematical procedures and they were pessimistic. The general research purpose was to produce a metaphorical thinking approach-based worksheet for students' procedural fluency on valid characteristics. This study used research and development by the ADDIE stage model. The participant was 9th-grade students in junior high school. Data collection were observation, questionnaires, and interview techniques. The results showed that the characteristics of the developed worksheet have been valid. The results of the worksheet validity test were obtained by 90% and the results of the trial of students were 93%. The implications of this worksheet are helpful for students to independent learning, and this worksheet helps students solve mathematical problems in accordance with procedural, assisted by steps of the metaphorical thinking approach, teaching and learning activities are more effective.
SOSIALISASI MEDIA DIGITAL UNTUK MEMBANGUN JIWA KEWIRAUSAHAAN SISWA SMAN 1 JONGGOL Han Nio, Tan; Daniel, Stepanus; Rian Nugroho, Andreas; Metallica, Christina; Novita Simanjuntak, Familia; Ditasona, Candra; Bryan C Tugelida, Nel
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 8, No 2 (2025): MARTABE : JURNAL PENGABDIAN KEPADA MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v8i2.648-654

Abstract

Pelaksanaan kegiatan sosialisasi media digital untuk membangun jiwa kewirausahaan siswa di SMA Negeri 1 Jonggol bertujuan untuk membangun jiwa kewirausahaan siswa. Metode yang digunakan dalam sosialisasi ini adalah metode ceramah dan diskusi. Hasil dari pelatihan ini memberikan manfaat yang sangat besar untuk siswa. Setelah dilakukan sosialisasi dan didapatkan hasil kuisioner yang terdiri dari 6 pernyataan, menunjukkan pentingnya sosialiasi ini. Pernyataan 1 didapatkan sebanyak 95% peserta setuju dengan pernyataan ini dan menunjukkan bahwa peserta mengerti pentingnya membangun bisnis digital. Pada pernyataan 2 didapatkan bahwa 100% peserta setuju. Hal ini menunjukkan bahwa kegiatan sosialisasi ini menambah rasa tertarik siswa dalam berwirausaha.  Pernyataan 3 didapatkan bahwa sebanyak 100% setuju dan memiliki rasa ingin tahu berhubungan dengan kewirausahaan berbasis digital. Pernyataan 4 menunjukkan sebanyak 36% menyatakan sangat setuju kemudian 29% menyatakan setuju, 31% menyatakan cukup pada pernyataan ini dan dapat disimpulkan bahwa sekitar 96% peserta siap memulai langkah pertama membangun bisnis digital. Pada pernyataan 5 sebanyak 42% menyatakan sangat setuju, kemudian 33% menyatakan setuju, 23% menyatakan cukup setuju dengan pernyataan ini. Pernyataan 6 diperoleh sebanyak 92% peserta sudah memiliki ide dan rencana untuk membangun bisnis digital, hanya tinggal menunggu waktu untuk menerapkan dalam kegiatan wirausaha. Karena hasil yang didapat tersebut, maka secara keseluruhan kegiatan ini berjalan dengan baik dan mampu membangun jiwa kewirausahaan siswa di SMA Negeri 1 Jonggol.
Development of a mathematics module on circle material based on the small group discussion model Lumbantoruan, Jitu Halomoan; Ditasona, Candra
Journal of Education and Learning (EduLearn) Vol 18, No 1: February 2024
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/edulearn.v18i1.20920

Abstract

This research aims to produce a mathematics module on circle material based on the small group discussion model to improve learning outcomes. The fact is that there are 48% of students who get low mathematics learning outcomes. Another fact is that at the high school level, 62% of students in circle material scored below the minimum completeness criteria. Urgent development research was carried out to produce circular module products. The method in this research is research and development (RD). The subjects and objects of the research were high schools and there were 32 students. Data collection techniques, material expert instruments, teachers, and student data were also obtained from the results of student pre-tests and post-tests. The data was analyzed by adding up all the assessment scores on the instruments adding up the test results and averaging the individual and classical scores. The results, and assessment of all module components by material experts, mathematics teachers, small group trials, and large group trials were 88.29%, 90.45%, 93.50%, and 92.10% in the very good category. The average score of students' post-test results is 87.50. Conclusion, this circle module can improve student learning outcomes significantly.
ANALISIS KESULITAN BELAJAR SISWA DALAM PEMBELAJARAN MATEMATIKA PADA MATERI PERBANDINGAN DI SMPN 58 JAKARTA KELAS VII.2 Candra Ditasona; Ruth Yuni Kartika; Jitu Halomoan Lumbantoruan
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol. 8 No. 1 (2023): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i1.4615

Abstract

The daily test results for student of class VII.2 SMPN 58 Jakarta on the Comparison material showed that 30 out of 36 students got scores below the MCML (Minimum Criteria of Mastery Learning). The low test results were not always caused by the level of students’ intellegence, but it could occur because students have difficulty learning, as a student with difficulty learning do not necessarily have inadequate intellegence. The research aimed to determine the type or form of learning difficulties and the causes for students during their learning. The research used qualitative method with a descriptive qualitative approach. The population in this research were 30 students of class VII.2 SMPN 58 Jakarta who got daily test scores below the MCML for Comparison material. The interview subjects were 6 out 30 students who were selected through purposive proportional random sampling, and a Math teacher in this class. The results obtained based on the test analysis and interviews found student difficulties, such as in interpreting language, in unsderstanding and using concepts, in using data, and in technical difficulty (counting). Then, the results obtained based on the anlysis questionnaire analysis and interviews found that students had difficulties due to their lack of confidence and mortification in learning, and teacher who didn’t understand each student personally.
Improvement the Results of the Minimum Competency Assessment (MCA) Literacy and Numeracy Class V SDN Pulogadung District : A Case Study of Fifth Grade Students at SDN Pulogadung District Ayu ArthaSari Beangelita Napitupulu; Kerdid Simbolon; Candra Ditasona
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.7362

Abstract

This study is based on the low literacy and numeracy skills of students in Indonesia. This study aims to see the improvement of literacy and numeracy skills possessed by grade V students at SDN Pulogadung. The instrument used in this study is the MCA (Minimum Competency Assessment) test. The approach used in this study is quantitative descriptive with a one group pretest post-test design. Data was collected through the AKM instrument test involving 30 students. The data was analyzed using the Gain test. The results of the study showed that there was an increase in literacy ability of 0.179 and numeracy of 0.379. It can be concluded that literacy skills have increased with low categories while numeracy skills have increased with medium categories.
Co-Authors Aneliana, Aneliana Angelia Patricia Situmorang Ayu ArthaSari Beangelita Napitupulu Bela Desy Natalia Bintang Pratama Bitman Manullang Bryan C Tugelida, Nel Dameria Sinaga Daniel, Stepanus Darhim Darhim Elferida Sormin Familia Novita Simanjuntak Han Nio, Tan Hendrikus Male, Hendrikus Hotmaulina Sihotang HOTMAULINA SIHOTANG Indah Pratiwi Junsay, Merle Kerdid Simbolon Kornelius Anugrah Zebua Kristina, Nugra Heni Kusuma, Yaya S. Lumbantoruan, Jitu Halomoan Manogari Sianturi Martadiputra, Bambang Apiv Priatna Mayawi Farida Melda Simorangkir, Melda Merle L. Junsay Merley Junsay Metallica, Christina Nenden Suciyati Sartika Ninda Kristin Novita Simanjuntak, Familia Pardosi, Deborah Purba, Santri Chintia Rene Estomo Rene T Estomo Rian Nugroho, Andreas Riska Septia Wahyuningtyas Risma Uly Manalu, Risma Uly Ruth Ririn Vania Ruth Yuni Kartika Safitri, Mia Millawaty Santri Chintia Purba Santri Chintia Purba Santri Chintia Purba Santri Chintya Purba Setiawan, Laurencia Firstania Sianturi, Manogari Simbolon, Rido Siregar, Jeny Sri Rejeki Ignasia Sitohang Stevi Natalia Sunarto Sunarto Susilo Susilo Tampubolon, Monica Noviyanti Tugelida, Nel Bryan C Yaya S. Kusumah