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All Journal JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) Jurnal Pengabdian Masyarakat dan Riset Pendidikan
Fernando Purba
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Humanities Education Languange, Linguistic, Communication & Media Mathematics Other

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Analisis Kesalahan dalam Menyelesaikan Soal Barisan dan Limit Barisan Berdasarkan Prosedur Newman: Studi Kasus Mahasiswa Prodi Pendidikan Matematika: Penelitian Thresia Veronika; Mentari Sukma; Fernando Purba; Nafa Cleo Wulandari Tarigan; Michael Christian Simanullang
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 3 No. 4 (2025): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 3 Nomor 4 (April 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v3i4.942

Abstract

The ability to solve mathematical problems is a person's ability to understand problems, construct mathematical models, choose the right strategy, and evaluate the correctness of the solution. This study aims to analyze errors in solving sequence and limit problems of real number sequences in semester VI students using the Newman procedure. This study is a qualitative descriptive study involving 10 students of the Mathematics Education Study Program, State University of Medan, data was collected through tests. The instrument used was real analysis problems with the topic of sequences and limit problems consisting of 4 essay questions. Data collection techniques include written tests. The data analysis techniques used are data reduction, data display, and conclusion drawing. The results of the analysis show that the average student error in solving 4 sequence and limit problems is 5% reading errors, 16.5% understanding errors, 7.5% transforming problems, 11.25% errors in the process skills stage, and 8.75% in writing/notation. The most significant error occurred at the understanding stage, with an average percentage of 16.8%.
PENGEMBANGAN MEDIA PEMBELAJARAN MATEMATIKA BERBASIS PBL BERBANTUAN VR DENGAN DELIGHTEX UNTUK MENINGKATKAN LITERASI NUMERASI SISWA SMP N 1 SIANTAR Fernando Purba; Mangaratua Marianus Simanjorang
JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) Vol 12, No 1 (2026)
Publisher : Fakultas Keguruan dan Ilmu pendidikan (FKIP) Universitas Labuhan Batu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpms.v12i1.9249

Abstract

This study aims to improve the numeracy literacy abilities of students who are still relatively low. In addition, the use of Delightex Edu media, which had never been used in the learning process at SMP Negeri 1 Siantar, makes the developed media a new innovation in mathematics learning at the school, especially to enhance students' numeracy literacy. This research is a development study involving 27 students of class VII-1 at SMP Negeri 1 Siantar. The research instruments consist of expert validation questionnaires, student practicality questionnaires, learning implementation observation sheets, two numeracy literacy tests, and student response questionnaires that have been validated. The analysis results showed that 1) the media expert validation achieved an average of 90.66%, and the content expert validation reached an average of 89.43%. 2) The results of the analysis of the student practicality questionnaire towards the media reached a percentage of 86.77%, and the analysis of the observation sheets on the implementation of learning reached an average of 86.95%. 3) The results of the classical completeness analysis reached a percentage of 85.18% with the number of students achieving complete scores being 24 students, and the results of the student response questionnaire analysis reached a percentage of 94.08%. 4) The N-Gain score as an improvement in students' numeracy literacy obtained was 0.60, which falls into the medium category, with details of 15 students in the medium category, 9 students in the high category, 2 students in the low category, and 1 student did not experience improvement. Thus, this learning media is feasible, practical, and effective to use in mathematics learning in the classroom.
Co-Authors Mangaratua Marianus Simanjorang Mentari Sukma Michael Christian Simanullang Nafa Cleo Wulandari Tarigan Thresia Veronika