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Siahaan, Meiva Marthaulina Lestari

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Religion Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Analysis of vector space content for developing a Prezi-integrated linear algebra module: Enhancing elementary algebra learning Siahaan, Meiva Marthaulina Lestari; Fitriani, Fitriani; Tambunan, Siska Nopa Br.
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 12 No 2 (2024)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v12i2.17315

The research aims to analyze vector content material and produce teaching materials that are valid, practical, and effective. The research method used is Alessi and Trollip's development research, which consists of three stages: planning, design, and development. The results of this research indicate that the vector space materials developed for teaching include vectors in R2, R3, and Rn, line and plane parameter equations, dot products and cross products, as well as line and plane coordinate equations in R3. The module assessment from two material experts was 3.33, indicating it is very feasible, while from two media experts it was 3.9625, also indicating it is very feasible. The benefits of this product in supporting students' understanding of vector space material include the composition of the material being based on an in-depth analysis of the textbooks used, relevant sources, and student test results from the previous three years. This approach helps students comprehend vector space, as the module presents relevant images to support the explanations. Additionally, the material in the module is integrated with Prezi, which helps to capture students' interest and encourages them to focus on the explanations. In conclusion, the developed teaching materials are effective in enhancing students' understanding of vector space concepts and are highly feasible for use in educational settings.

Pengembangan Lembar Kerja Siswa Materi SPLDV untuk Meningkatkan Hasil Belajar Siswa Melalui Pendekatan Matematika Realistik Taniu, Deni; Hijriani, Lailin; Kehi, Yohanes Jefrianus; Siahaan, Meiva Marthaulina Lestari; Fitriani
Media Pendidikan Matematika Vol. 13 No. 2 (2025): J-MPM
Publisher : Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/mpm.v13i2.16740

This research is motivated by the lack of worksheets development (LKS) at school based on the Realistic Mathematics Approach (RMA), which has resulted in low student mathematical abilities, especially in solving system of linear equations in two variables. This research aims to produce valid, practical, and effective Student Worksheets (LKS) based on the Realistic Mathematics Approach (RMA) for algebra. The research aimed to improve students' mathematical abilities, which will impact student learning outcomes. The research type is research and development (R&D) using the 4-D model. The target population of this study was 20 students of class VIIIA at Junior High School Neonbat. The instruments used were expert validation sheets, student response questionnaire sheets, and pretest and posttest questions. The results of the study showed that the quality of the student worksheets met the validity criteria, with an average value of 84.78% in the very valid category. The results of the LKS practicality questionnaire showed an average score of 90.6% in the very practical category. While in terms of effectiveness, it met the effective criteria. The average individual score for the pretest results was 24.5. However, it increased after using the student worksheet as indicated by the posttest results with an average value of 79.5. The percentage of classical completion based on the posttest results was 80%, which is included in the effective category. So that, the student worksheet for algebra material through realistic mathematics approach met the criteria of valid, practical, and effective.

Review of Critical Thinking Ability as an Indicator in Solving Mathematical Problems Based on Representation Hijriani, Lailin; Siahaan, Meiva Marthaulina Lestari; Simamarta, Justin Eduardo; Salsinha, Cecilia Novianti; Mone, Ferdinandus
IndoMath: Indonesia Mathematics Education Vol 9, No 1 (2026): Vol 9 No 1, February 2026
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/indomath.v9i1.183

This study aims to describe student’s critical thinking ability in solving mathematical problems based on the type of representation used when solving the given problems. The study was conducted in 9th grade in junior high school in Kefamenanu, Timor Tengah Utara, NTT, Indonesia. Three respondents were selected from 28 students who were given a critical thinking ability test based on the completeness of their answers and then interviewed to clarify their answers. The instruments used in this study were test questions and interview guidelines. Test data obtained, has been analyzed based on Facione's critical thinking ability indicators which include interpretation, analysis, evaluation, inference, explanation, and self-regulation. The results showed that student with symbolic representation, fulfilled 4 indicators of critical thinking ability, namely interpretation, analysis, evaluation, and inference. Which means that symbolic representation tends to support deeper critical thinking indicators than visual or verbal. Where student with visual representation fulfilled the critical thinking skills indicators, namely analysis and evaluation. Meanwhile, student with verbal representation fulfilled 1 indicator, namely interpretation.

Analisis Pemahaman Konsep Matematika Siswa Kelas VII berdasarkan Taksonomi Solo (Structure Of Observed Learning Outcomes) pada Materi Perbandingan Naifio, Elvira Riyani Mau; Fitriani; Siahaan, Meiva Marthaulina Lestari
GAUSS: Jurnal Pendidikan Matematika Vol. 6 No. 1 (2023)
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/gauss.v6i1.5441

Abstrak Pemahaman konsep matematika terlihat dari cara berpikir siswa dalam menyelesaikan masalah matematika. Mulai dari cara menuliskan langkah-langkah penyelesaian, jawaban akhir, sampai kepada mendapatkan alternatif penyelesaian masalah. Penelitian ini dilakukan di SMP Negeri 1 Malaka Timur dan bertujuan untuk menganalisis sejauh mana pemahaman konsep matematika yang diklasifikasikan dari level berpikirnya berdasarkan taksonomi SOLO. Pengambilan data dilakukan dengan memberikan tes pemahaman konsep pada 18 siswa Kelas VII kemudian dilakukan reduksi data dan dipilih 5 responden yang mewakili masing-masing level berpikir. Hasil penelitian menunjukkan subjek 1 memiliki level berpikir prastruktural dan tidak memenuhi indikator pemahaman konsep, subjek 2 memiliki level berpikir unistruktural dan memenuhi salah satu indikator pemahaman konsep, subjek 3 memiliki level berpikir multistruktural dan memenuhi dua indicator pemahaman konsep, subjek 4 memiliki level berpikir relasional dan memenuhi semua indikator pemahaman konsep dan subjek 5 merupakan level berpikir extended abstract dan memenuhi semua indicator pemahaman konsep. Kata kunci: level berpikir, pemahaman konsep matematika, taksonomi SOLO

Sharing Session Seleksi Penerimaan Mahasiswa Baru (SNPMB) 2023 Untuk Calon Mahasiswa Baru Di SMA Negeri 1 Kefamenanu NTT Meiva Marthaulina Lestari Siahaan; Zulkaidah Nur Ahsan; Hermina Disnawati; Lidwina Felisima Tae
Jurnal Nusantara Berbakti Vol. 1 No. 4 (2023): Oktober : Jurnal Nusantara Berbakti
Publisher : Universitas Kristen Indonesia Toraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59024/jnb.v1i4.189

This service is based on changes in the mechanism and substance of the implementation of National Selection for Student Admissions (SNPMB). This transition is something new for prospective students and if prospective students do not understand it, it will 0certainly have a bad impact on the readiness of prospective students in participating in the implementation of UTBK-SNBT. The procedure for implementing the service is a sharing session on the implementation of SNPMB 2023, introduction and discussion of the 2023 UTBK-SNBT model questions, as well as an initial ability test on the representation of the 2023 UTBK-SNBT question model based on the latest UTBK-SNBT sub-matter. Then the socialization participants will be given a test to measure their knowledge of the SNPMB 2023 mechanism after the provision of SNPMB 2023 material. The results of this service activity are that more than 90% of prospective university students at SMA Negeri 1 Kefamenanu have understood the mechanism for implementing SNPMB 2023 after participating in the sharing session, based on the ability test, prospective university students do not fully understand the 2023 UTBK-SNBT model questions, and based on the results of the questionnaire, more than 90% of sharing session participants gave a good response to this activity. The results of this activity are important as a measure of understanding of the SNPMB 2023 mechanism and provide an overview of the initial ability of prospective students to answer UTBK 2023 model questions so that follow-up can be known in accordance with these abilities.

MENINGKATKAN KEMAMPUAN LITERASI MEMBACA DAN LITERASI NUMERASI DENGAN GIAT LITERASI BERTEMA GASING Siahaan, Meiva Marthaulina Lestari; Ahzan, Zulkaidah Nur; Fitriani, Fitriani; Neno, Hesni; Manek, Prudensius; Danul, Yuliana Serli; Tae, Rut
Jurnal Pengabdian Pendidikan Masyarakat (JPPM) Vol 4 No 2 (2023): Jurnal Pengabdian Pendidikan Masyarakat Vol 4 No 2 (2023)
Publisher : LPPM UNIVERSITAS MUHAMMADIYAH MUARA BUNGO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52060/jppm.v4i2.1427

This community service activity was held according to situation analysis and problems that occurred at SD Negeri Sasi Kefamenanu, East Nusa Tenggara. The main problem is the low ability of students to solve problem in reading numeracy literacy in AKM model. This service method is a service-learning method with the aim of improving students' reading literacy and numeracy literacy skills through GASING-themed literacy activities and increasing student motivation in learning through GASING-themed literacy activities. The results of the service activities show 1) students' initial ability to work on reading literacy and numeracy literacy questions as seen from the average percentage value of 54.10%, 2) providing GASING-themed reading literacy activities in the form of providing props in the form of letter trees, paragraph puzzles, providing GASING-themed numeracy literacy activities in the form of providing props in the form of number cards, pattern cards, and number paper, 3) students' ability to work on reading literacy and numeracy literacy questions after receiving GASING-themed literacy activities as seen from the average percentage value of 78. 70%, and 4) understanding the material conveyed through GASING-themed literacy activities, the service team provides a quick and easy way to solve literacy problems, students are also enthusiastic when the service team conveys the material, students also feel that the service team is guiding students in solving problems, students also feel excited in participating in activities, students feel interested in this activity and are willing to take part in similar activities. This indicates that this activity is beneficial for students and motivates students in learning to develop their literacy skills.

A design based research study on differentiated integer instruction using diagnostic assessment Siahaan, Meiva Marthaulina Lestari; Fitriani; Laja, Yosepha Patricia Wua; Hijriani, Lailin
Al-Jabar: Jurnal Pendidikan Matematika Vol 17 No 1 (2026): Al-Jabar : Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v17i1.30329

Purposes: This study aims to design instruction for integer learning using the GASING method based on learning needs. Method: The participants were 79 fifth-grade students from three schools in a sub-district. The study employed design-based research in three phases; preliminary design, teaching experiment, and retrospective analysis. Data were analyzed through cognitive diagnostic assessment, skills analysis, and error analysis to identify students’ learning needs and develop learning instruction. Findings: The findings revealed that most students were at the cognitive levels of remembering and understanding when solving problems related to integer properties, number order, place value, and contextual situations. Their numeracy literacy skills were generally low, and they demonstrated conceptual, procedural, and operational errors. Based on these diagnostic results, a learning design using the GASING method supported by interactive visual aids was developed. The design emphasizes number sequences through number lines, ascending and descending order, comparing integers, and solving contextual problems involving ordered numbers. For the concept of place value, the design includes activities such as comparing integers, reading and constructing numbers, understanding integer properties, and determining place value. Significance: These findings suggest that teachers should integrate context-based instruments into daily classroom instruction to strengthen students’ conceptual understanding and problem-solving skills.

Demonstrasi Alat Peraga Matematika Pada Siswa/Siswi Sekolah Dasar Kiupukan Ladja, Yosepha Patricia Wua; Naimnule, Maria; Bete, Hendrika; Siahaan, Meiva Marthaulina Lestari
Jurnal Pengabdian Masyarakat Ilmu Pendidikan Vol. 5 No. 2 (2026): May 2026
Publisher : Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpm-ip.vol.5i.2.1721

This article describes the results of community service activities targeting students of Kiupukan State Elementary School, with the goal of enabling teachers to utilize varied and engaging learning media, such as concrete materials, to enhance mathematics learning outcomes. The concrete media used were teaching aids in the form of number rulers and number cards on the topic of integers. The number line and number cards were chosen as an alternative to overcome the problem, because they can help students understand the addition and subtraction of integers. In addition, they can also concretize the addition and subtraction of integers, which are abstract concepts. This research method was implemented through several stages, namely the preparation stage, implementation, and evaluation of the activity. The results of this community service activity were an increase in students' understanding at SDN Nispukan from a score of 22 before the activity to 77.8 after the activity. While at SDK, Kiupukan went from a score of 22 to 60.4. This Community Service activity needs to be carried out further on other abstract mathematics topics, but still using teaching aids.

STEM-integrated project-based learning: Students’ critical thinking skills in trigonometry Kristoforus Nofenaris Agung; Meiva Marthaulina Lestari Siahaan; Rika Handayani; Lailin Hijriani
Journal of Advanced Sciences and Mathematics Education Vol. 6 No. 1 (2026): Journal of Advanced Sciences and Mathematics Education
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jasme.v6i1.972

Background: This study was motivated by the importance of critical thinking skill in solving problem and making the decision. In addition, low level of students’ critical thinking skills issue in mathematics learning, particularly in trigonometry Aims: To address this issue, a STEM-integrated Project-Based Learning (PjBL-STEM) model was implemented. Method: This study employed a mixed-method approach combining quantitative and qualitative data. The sample consisted of 50 tenth-grade students at SMA Negeri Manufui, divided into an experimental class; 25 students and a control class; 25 students. Data were collected through a critical thinking skills test, student response questionnaires, and interviews. Results: The results of the independent samples t-test showed a significant difference between the experimental and control classes (Sig. = 0.001 < 0.05). The mean posttest score of the experimental class (52.83) was higher than that of the control class (45.33). The N-Gain analysis indicated a low improvement category in both classes; however, the experimental class (26.29%) showed a higher increase compared to the control class (4.50%). Student responses toward the PjBL-STEM implementation were highly positive, with more than 90% agreement. Qualitative findings revealed that project-based experiences helped students recall concepts, identify reasoning errors, and reflect on problem-solving processes. Conclusion: STEM-integrated PjBL model was effective in improving students’ critical thinking skills and fostering active, collaborative, and meaningful learning. Continuous implementation supported by structured guidance and critical thinking exercises is recommended to achieve more optimal learning outcomes.

Numeracy Training: Applying Jarimatika Method in Elementary School Students of Border Area Nunpene East Nusa Tenggara Lailin Hijriani; Meiva Marthaulina Lestari Siahaan; Justin Eduardo Simarmata; Yeni Missa; Margarita Tampani; Nelciana Talan
Smart Society Vol. 2 No. 1 (2022): Smart Society
Publisher : FOUNDAE (Foundation of Advanced Education)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/smartsociety.v2i1.101

The numeracy skill of elementary school students in border area Nunpene East Nusa Tenggara is still relatively low. This is caused by the studentsâ€™ habit use counting aid such as calculators. Therefore, it is necessary to have a Lecturer activity in the community to help elementary school students which aim to improve their numeracy skills. Because mathematics teaches various skills, one of which is counting. So that the ability to count is a fundamental thing that must be mastered by students when they learn mathematics. One of learning method that can be done to improve students' numeracy skills is by applying the Jarimatika method which involves the students' own organs directly. Indirectly cognitive and psychomotor abilities will develop simultaneously so as to increase the efficiency of students' counting speed. As for the steps of the service, the method are including the introduction of the counting method, assistance during the learning process, then providing an evaluation. The results of this training are that after the training, it can be seen from the posttest results that students have increased their numeracy skills using the Jarimatika method. As well as increasing the knowledge of mathematics teachers regarding the use of the Jarimatika method as an alternative method of numeracy

Co-Authors Ahsan, Zulkaidah Nur Ahzan, Zulkaidah Nur Aloisius Loka Son Amsikan, stanislaus - Angelika Rosa Da Lima Leli Astriani Dewi, Ni Putu Yuni Bete, Hendrika Cecilia Novianti Salsinha Damianus Dao Samo Danul, Yuliana Serli Deda, Yohanis Ndapa E. Elvis Napitupulu Eduardus Beo Seso Delvion Elin, Lailin Hijriani Emily Johnson Ermelinda Nainahas Farida Daniel Fitriani Fitriani Fitriani Fitriani Fitriani Funan, Fedelia Gusti Firda Khairunnisa Handayani, Rika Hermina Disnawati, Hermina Hesni Neno Hesni Neno, Hesni Hijriani, Lailin Hijriani, Lailin Juliana Mehelina Herlince Nenohai Klau, Kondradus Yohanes Klau, Maria Fransineti Hoar Kondradus Yohanes Klau Kristoforus Nofenaris Agung Kurnia Putri Sepdikasari Dirgantoro Ladja, Yosepha Patricia Wua Lailin Hijriani Leli, Angelika Rosa Da Lima Lidwina Felisima Tae Lidwina Felisima Tae LUDGARDIS LEDHENG Maifa, Talisadika Serrisanti Manek, Prudensius Manekat, Septianingsi Margarita Tampani Melda J Saragih Melda Jaya Saragih, Melda Jaya Merlin Helentina Napitupulu Minanur Rohman mone, ferdinandus Naifio, Elvira Riyani Mau Naimnule, Maria Nelciana Talan Oce Datu Appulembang, Oce Datu Patrisius Nulle Prudensius Manek Rika Handayani Riny Oktora Purba Rut Tae Selestina Nahak Simamarta, Justin Eduardo Simarmata, Justin Eduardo Solo, Maria Fransiska Venidora Tae, Rut Tamba, Kimura Patar Tambunan, Siska Nopa Br. Taniu, Deni Toni, Albertus Toni, Albertus - Wua Laja, Yosepha Patricia Yeni Missa Yohanes Jefrianus Kehi Yosepha P. W. Laja Yuliana Serli Danul Zulkaidah Nur Ahsan Zulkaidah Nur Ahzan

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