Article Per Year (5 Year)
p-Index From 2020 - 2025
1.244
P-Index
This Author published in this journals
All Journal SEPREN: Journal of Mathematics Education and Applied Ndrumi : Jurnal Ilmu Pendidikan dan Humaniora AFORE: Jurnal Pendidikan Matematika
Hardi Tambunan
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Arts Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Mathematics Other

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
Kemampuan Guru Membangun Minat dan Motivasi Belajar Siswa dalam Matematika nicomse nicomse; Hardi Tambunan
Sepren 2022: Special Issue for NICoMSE 2022 Universitas HKBP Nommensen
Publisher : Prodi Pendidikan Matematika FKIP Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sepren.v4i0.835

Abstract

Penelitian ini bertujuan untuk mengetahui kategori kemampuan guru matematika dalam membangun minat dan motivasi belajar siswa. Penelitian ini dilaksanakan di enam sekolah negeri dan swasta pada siswa kelas 8 SMP di Medan, dan sampel diambil secara acak sebanyak 245 siswa. Instrumen penelitian menggunakan angket, dan analisis data dengan analisis deskriptif. Berdasakan hasil analisis dapat disimpulkan bahwa kemampuan guru matematika membangun minat belajar siswa adalah kategori cukup. Kemampuan guru matematika membangun motivasi belajar siswa adalah kategori cukup
THE COOPERATIVE SCRIPT LEARNING MODEL ON THE ABILITY TO UNDERSTAND MATHEMATICAL CONCEPTS Laowo, Nasowaauri; Sudung Kristopel Naiborhu; Fresty Handayani Togatorop; Purnama Raya Anjelina Situmorang; Vinita M L Gaol; Firman Pangaribuan; Hardi Tambunan
Afore : Jurnal Pendidikan Matematika Vol 4 No 1 (2025): AFORE : Jurnal Pendidikan Matematika
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/afore.v4i1.2547

Abstract

This study aims to determine the effect of the Cooperative Script learning model on students' mathematical concept comprehension skills. This research uses a quantitative approach with a quasi-experimental method and a pretest-posttest control group design. The population of this study is all 8th-grade students of SMP Negeri 1 Toma, and the research samples consist of class VIII-C as the experimental group and class VIII-D as the control group. The data were analyzed using the Liliefors test to check for normality, variance tests for homogeneity, and t-tests to test the hypothesis. The research findings show that: (1) the use of the Cooperative Script learning model improves students' ability to understand mathematical concepts and makes them more focused and actively engaged in learning; (2) the hypothesis test results show that tₕᵢₜ > tₜₐbᵗ (2.583 > 2.000), which leads to the rejection of the null hypothesis (Hₒ) and the acceptance of the alternative hypothesis (Hₐ). Therefore, it can be concluded that the Cooperative Script learning model influences students' mathematical concept comprehension abilities.
ANALYSIS OF THE IMPLEMENTATION OF DIFFERENTIATED INSTRUCTION IN MATHEMATICS LEARNING AT SDN 104186 TANJUNG SELAMAT Jamilah Rambe; Ayu Risnawati; Laura Febriyanti Tambunan; Sezi Oktavia Simarmata; Karyenti Merintan Sani Lahagu; Firman Pangaribuan; Hardi Tambunan
Afore : Jurnal Pendidikan Matematika Vol 4 No 1 (2025): AFORE : Jurnal Pendidikan Matematika
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/afore.v4i1.2556

Abstract

The purpose of this study is to describe the implementation process of differentiated instruction and the factors that affect the implementation of Mathematics learning using differentiated instruction in the 4th grade. This qualitative research uses descriptive data such as written texts, statements, and behaviors observed in the teaching and learning process. The study was conducted in the odd semester of 2024 at SDN 104186 Tanjung Selamat. The research informants were the teacher and the 4th-grade students. The differentiated instruction in Mathematics implemented in the 4th grade at SDN 104186 Tanjung Selamat had a positive impact on content, process, and product differentiation. Furthermore, the factors influencing the successful implementation of differentiated instruction in 4th-grade Mathematics included effective teaching strategies and active student involvement.
EKSPLORASI GOWE NILARE SEBAGAI MEDIA PEMBELAJARAN BERBASIS BUDAYA PADA MATERI LINGKARAN Laowo, Nasowaauri; Hardi Tambunan; Ruth Mayasari Simanjuntak
Ndrumi : Jurnal Ilmu Pendidikan dan Humaniora Vol 8 No 1 (2025): Ndrumi : Jurnal Ilmu Pendidikan dan Humaniora
Publisher : LPPM Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/ndrumi.v8i1.3205

Abstract

This study aims to explore the use of Gowe Nilare, a traditional Nias game, as a culturally based learning medium in teaching the concept of circles. The research employed a literature review approach, collecting and analyzing sources related to local culture, mathematical concepts of circles, and experiential learning theory. The findings indicate that Gowe Nilare physically and structurally represents the concept of a circle, both in the formation of players and in the repetitive, cyclical rhythm of movements. The use of this medium not only reinforces students' understanding of circles in a concrete and contextual manner but also enhances engagement and motivation through an instructional approach that integrates local cultural values. Furthermore, Gowe Nilare serves as a tool to strengthen cultural identity and social values such as togetherness and collaboration in the learning process. Thus, Gowe Nilare can be considered an effective and relevant alternative learning medium, while also supporting the preservation of traditional culture within modern educational contexts. This study recommends the broader development and implementation of culturally based learning media to enrich teaching methods in schools.
EKSPLORASI BALUSE TERHADAP KONSEP BANGUN DATAR Averlin Kristiani Lahagu; Hardi Tambunan; Ruth Mayasari Simanjuntak
Ndrumi : Jurnal Ilmu Pendidikan dan Humaniora Vol 8 No 1 (2025): Ndrumi : Jurnal Ilmu Pendidikan dan Humaniora
Publisher : LPPM Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/ndrumi.v8i1.3206

Abstract

This study aims to explore the geometric values embedded in the baluse, a traditional shield of the Nias people, through an ethnomathematical approach. The primary focus of this research is to identify the flat shapes reflected in the visual structure of the baluse and to analyze its potential as a learning medium for introducing the concept of two-dimensional shapes at the elementary and secondary school levels. This study employs a literature review method by examining various cultural texts, visual documentation, and previous studies relevant to the fields of ethnomathematics and culturally-based mathematics education. The findings reveal that the baluse visually incorporates flat geometric shapes such as ellipses, circles, and vertical symmetry. This structure holds significant potential as a contextual teaching medium that can enhance students’ understanding of geometric concepts through cultural perspectives. Furthermore, the results reinforce the idea that mathematics learning integrated with local wisdom not only increases student engagement but also contributes to cultural preservation. The study recommends the development of instructional media and classroom experiments based on the baluse to evaluate its effectiveness in educational practice.
EKSPLORASI RUMAH ADAT BATAK TOBA TERHADAP KONSEP BANGUN RUANG DI KELAS XII SMA NEGERI 1 GIRSANG SIPANGAN BOLON Purnama Raya Anjelina Situmorang; Hardi Tambunan; Ruth Mayasari Simanjuntak
Afore : Jurnal Pendidikan Matematika Vol 4 No 1 (2025): AFORE : Jurnal Pendidikan Matematika
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/afore.v4i1.3119

Abstract

This study aims to explore the integration of the Batak Toba traditional house as a contextual medium in teaching three-dimensional geometric concepts to twelfth-grade students at SMA Negeri 1 Girsang Sipangan Bolon. A qualitative approach was employed to observe how geometric shapes within the architectural structure of the traditional house—such as prisms, pyramids, and rectangular blocks—can be identified and utilized to enhance students’ understanding of spatial geometry. The results indicate that this culturally based learning approach significantly improves students’ conceptual comprehension, creativity, and learning motivation. Students find it easier to associate geometric forms with real-world structures, positively impacting their academic performance. Moreover, this method reinforces local cultural values and promotes active student engagement in the learning process. Teachers play a crucial role in facilitating the connection between mathematical concepts and cultural context. The study recommends further development of local-culture-based instructional media and teacher training to integrate indigenous knowledge into classroom learning. The integration of cultural elements in mathematics education has proven effective in creating meaningful learning experiences and fostering students' cultural identity.
EKSPLORASI ORNAMEN PENGERET RET TERHADAP KONSEP BANGUN DATAR Ribka Zelin Margaretha Sitepu; Hardi Tambunan; Ruth Mayasari Simanjuntak
Afore : Jurnal Pendidikan Matematika Vol 4 No 1 (2025): AFORE : Jurnal Pendidikan Matematika
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/afore.v4i1.3197

Abstract

This study aims to explore the relationship between the traditional pengeret-ret ornament and the concept of plane figures from an ethnomathematical perspective. The pengeret-ret ornament, a distinctive motif from the cultural heritage of the Indonesian archipelago, was chosen as the object of study due to its rich visual patterns filled with geometric shapes. This research employs a literature study method with a qualitative-descriptive approach. Data sources include scholarly journals, ethnographic articles, and visual references of relevant traditional motifs. The findings indicate that the pengeret-ret ornament contains elements of plane figures such as triangles, squares, parallelograms, rhombuses, and circles. These patterns are arranged symmetrically and repetitively, reflecting geometric concepts such as translation, reflection, and rotation. In addition to their aesthetic and symbolic value, these ornaments also hold great potential as contextual, culturally based media for teaching geometry. Therefore, this research contributes to the development of ethnomathematics teaching materials as well as the preservation of culture through innovative approaches in mathematics education.
EKSPLORASI FARITIA TERHADAP LINGKARAN Karyenti Merintan Sani Lahagu; Hardi Tambunan; Ruth Mayasari Simanjuntak
Afore : Jurnal Pendidikan Matematika Vol 4 No 1 (2025): AFORE : Jurnal Pendidikan Matematika
Publisher : Universitas Nias Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57094/afore.v4i1.3202

Abstract

This study aims to explore the relationship between the traditional musical instrument Faritia from Nias and the concept of the circle in terms of its visual form, rhythmic structure, and social symbolic meaning. Faritia is a metal idiophone shaped like a circle, commonly used in traditional ceremonies such as Mamozi Aramba. The research approach is a literature review, collecting and analyzing various sources on organology theory, Euclidean rhythm, and ethnomusicological studies. The findings indicate that the physical form of Faritia reflects principles of acoustic resonance and symbolic values commonly found in traditional cultures: balance, wholeness, and continuity. The rhythmic patterns produced by Faritia show a tendency towards cyclical beat distribution similar to the concept of Euclidean rhythms. Moreover, in social practice, Faritia is played within circular formations that reinforce collective meaning and community unity. Thus, Faritia functions not only as a traditional musical instrument but also as a multidimensional cultural symbol representing the circle in the physical, musical, and social structures of Nias society.
Co-Authors Averlin Kristiani Lahagu Ayu Risnawati Firman Pangaribuan Fresty Handayani Togatorop Jamilah Rambe Karyenti Merintan Sani Lahagu Laowo, Nasowaauri Laura Febriyanti Tambunan nicomse nicomse Purnama Raya Anjelina Situmorang Ribka Zelin Margaretha Sitepu Ruth Mayasari Simanjuntak Sezi Oktavia Simarmata Sudung Kristopel Naiborhu Vinita M L Gaol