Simanjuntak, Ruth Mayasari
Universitas HKBP Nommensen

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The Parhalaan of the Batak Ugamo Malim in the arithmetic context Simanjuntak, Ruth Mayasari; Hutauruk, Agusmanto JB; Manik, Efron
AXIOM : Jurnal Pendidikan dan Matematika Vol 13, No 2 (2024)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/axiom.v13i2.22118

Abstract

The implementation of ethnomathematics approaches that connect culture and mathematics education remains limited, despite the need to bridge mathematical concepts with real-world applications rooted in local culture. The Batak Parhalaan calendar, which incorporates arithmetic computations, has not been extensively explored within mathematics education. Prior studies often focus broadly on ethnomathematics without delving into specific cultural contexts, such as traditional calendars and their relevance to learning mathematics. This study addresses this gap by investigating how the Parhalaan calendar can be integrated into mathematics instruction to enhance students' understanding of mathematical concepts. Employing a qualitative descriptive approach, this research examines the Batak Ugamo Malim tribe’s calendar system, calculates Parhalaan in relation to arithmetic, and analyzes it from a mathematical perspective. The results reveal the application of modulo arithmetic in Parhalaan, specifically the modulo 7 system, which reflects the 7-day week structure. Results reveal the application of modulo arithmetic in Parhalaan, specifically the modulo 7 system, reflecting the 7-day week structure. The formula X+Y−Z=S mod 7 harmonizes the traditional Batak calendar with the Gregorian system, providing a systematic method for determining days. Integrating this concept into mathematics education strengthens problem-solving, logical reasoning, and interdisciplinary understanding. Linking mathematics with cultural traditions fosters appreciation for local heritage, broadens perspectives, and raises awareness about preserving cultural diversity, thereby enriching the educational experience for students.
Implementation of Multi Criteria Decision Making In The Evaluation Of The Work Of FKIP UHN Lecturers simanjuntak, ruth mayasari
ZERO: Jurnal Sains, Matematika dan Terapan Vol 7, No 2 (2023): Zero: Jurnal Sains Matematika dan Terapan
Publisher : UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/zero.v7i2.19166

Abstract

The purpose of this study is to implement the multi criteria decision making (MCDM) with the Analytical Hierarchy Process (AHP) method to obtain the results of the assessment of the performance of the lecturer in determining the best lecturer. The use of this method begins with creating a hierarchical structure of the problem to be studied. A matrix of pairs of comparisons will be searched for the weight of each criterion by normalizing the average of the opinion of the respondent. Maximum eigen values and normalized eigen vectors will be obtained from the matrix. In the process of determining the hierarchical weighing factor, the competence test should be performed CR< 0,1. The factor variables used are student questionnaires towards learning (C1), Research (C2), Commitment to the community (C3), and Seminar/Workshop/General College/recognition (C4). Based on the data processing results, the priority is Research criteria (C2) of 0.318505; then the second criterion is Student questionnaire towards learning(C1) of 0.287053; the third is Abdimas’s (C3) criteria of 0.237667 and the last is the Seminar/workshop/general class/recognitive (C4) of 0.156775. And based on analysis using Analytical Hierarchy Process (AHP) then who becomes the best lecturer in the Faculty of Education and Sciences of the University of HKBP Nommensen is initially D15 set as the best faculty in position 1 with a score of 0.35 or 35%, D 14 is in position 2 with a rating of 0.335 or 33.5% and D12 is in the third position with the score of 0,325 or 32.5%.
DEVELOPMENT OF MATHEMATICS MODULE BASED ON THE PROBLEM SOLVING STRATEGY TO MEASURE HIGH ORDER THINKING ABILITY OF STUDENTS Simanjuntak, Ruth Mayasari; Sihombing, Dame Ifa
AXIOM : Jurnal Pendidikan dan Matematika Vol 11, No 1 (2022)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/axiom.v11i1.11449

Abstract

Penelitian ini merupakan penelitian pengembangan yang bertujuan untuk mengetahui proses pengembangan bahan ajar matematika berbasis strategi problem solving pada pokok bahasan bilangan berpangkat dan bentuk akar kelas IX SMP. Jenis penelitian yang digunakan adalah penelitian Research & Development (R&D). Subjek penelitian adalah siswa kelas IX SMPN 3 Percut Sei Tuan. Berdasarkan hasil pengembangan modul diperoleh modul yang valid, praktis, efektif, dan dapat mengukur kemampuan tingkat tinggi peserta didik. (1) Valid, Hasil validasi dari para ahli menyatakan bahwa nilai rata-rata aspek modul barbasis strategi problem solving pada materi bilangan berpangkat dan bentuk akar adalah 3,57. (2) Praktis, berdasarkan hasil uji coba skala besar/ lapangan mendapat nilai N 73,380 dengan kriteria Praktis. (3) Efektif, hasil uji keefektifan yang dilakukan saat uji coba lapangan 17 peserta didik yang tuntas dan 7 peserta didik yang tidak tuntas dalam mengerjakan soal. Uji efektifitas peserta didik yang dilakukan diketahui bahwa presentasi ketuntasan mendapat hasil hingga 70,83 % dengan kriteria efektif. (4) Kemampuan berpikir tingkat tinggi pada sampel sebesar 61,17% dengan kriteria baik. Dari data tersebut menunjukkan bahan ajar pembelajaran layak digunakan berdasarkan respon pendidik dan keefektifan yang dilakukan oleh peserta didik maka pengembangan modul matematika layak digunakan di sekolah. Keunggulan modul ini adalah lebih efisien, efektif dan terjadi pemerataan pemahaman terhadap materi yang disampaikan.AbstractThis is development research that aims to determine the process of developing mathematics teaching materials based on problem-solving strategies on the subject of numbers with exponents and root forms for the ninth-grade students of junior high school. This study follows a Research & Development (R&D) research type. The research subjects were the ninth-grade students of SMPN 3 Percut Sei Tuan. Based on the results of the module development, a module that is valid, practical, effective, and can measure the high-level abilities of students is considered as follows. (1) Valid, the results of the validation from the experts stated that the average value of the aspect of the problem-solving strategy-based module on the matter of numbers with exponents and root forms was 3.57. (2) Practical, based on the results of large-scale/field trials, the score is N 73,380 with Practical criteria. (3) Effective, the results of the effectiveness test conducted during the field trial were 17 students who were successful and 7 students who were not successful in completing the questions. The effectiveness test was known based on the percentage of learning mastery up to 70.83% with effective criteria. (4) Higher order thinking ability in the sample is 61.17% with good criteria. Based on these data, it reveals that teaching and learning materials are suitable based on the response of educators and the effectiveness of the students. Thus, the development of the mathematics module is appropriate to be used at schools. The advantages of this module are that it is more efficient and effective and there is an equal understanding of the material presented.