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Budi Halomoan Siregar

Universitas Negeri Medan

Author-ID : 563052

Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Education Languange, Linguistic, Communication & Media Library & Information Science Mathematics Physics Social Sciences Other

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MENINGKATKAN LITERASI MATEMATIS MELALUI PENDEKATAN MATEMATIKA REALISTIK PADA SISWA KELAS 11 SMA YPK Gultom, Glori Cahaya; Hafiza, Mutia; Rehana, Rehana; Kaban, Rifka Elianti br; Ambarita, Samuel Yordan; Siregar, Budi Halomoan; Saragih, Saripah Erguna br
EDUTECH : Jurnal Inovasi Pendidikan Berbantuan Teknologi Vol. 5 No. 1 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/edutech.v5i1.4610

The purpose of this study was to improve students' mathematical literacy competence in class XI at SMA YPK Medan by implementing the Realistic Mathematics Education (RME) approach supported by educational technology. Mathematical literacy includes students' ability to understand, interpret, and apply mathematical concepts in real-world contexts. In this study, an experimental approach with pre-tests and post-tests was used to compare the results of the control and experimental classes. The experimental class was taught using the RME approach supported by technology such as mathematics learning applications and interactive media, while the control class used traditional teaching methods without technological support. Data were analyzed using a t-test to analyze differences in mathematical competence between the two classes. The results of this study indicate that the RME approach supported by technology is significantly more effective in improving students' mathematical literacy compared to traditional methods, especially in terms of formulating, interpreting, and applying mathematics to solve real-world problems. This research also shows that the integration of technology in mathematics learning can enrich students' learning experiences, increase engagement, and support the development of better mathematical skills. Abstrak Tujuan dari penelitian ini adalah untuk meningkatkan kompetensi literasi matematika siswa pada kelas XI di SMA YPK Medan dengan menerapkan Pendekatan Matematika Realistik (PMR) yang didukung oleh teknologi pendidikan. Literasi matematika mencakup kemampuan siswa dalam memahami, menginterpretasikan, dan mengaplikasikan konsep-konsep matematika dalam konteks dunia nyata. Dalam penelitian ini, pendekatan eksperimental dengan pre-test dan post-test digunakan untuk membandingkan hasil dari kelas kontrol dan kelas eksperimen. Kelas eksperimen diajar menggunakan pendekatan PMR yang didukung oleh teknologi seperti aplikasi pembelajaran matematika dan media interaktif, sedangkan kelas kontrol menggunakan metode pengajaran tradisional tanpa dukungan teknologi. Data dianalisis dengan menggunakan uji-t untuk menganalisis perbedaan kompetensi matematika antara kedua kelas. Hasil penelitian ini menunjukkan bahwa pendekatan PMR yang didukung oleh teknologi secara signifikan lebih efektif dalam meningkatkan literasi matematika siswa dibandingkan dengan metode tradisional, terutama dalam hal merumuskan, menafsirkan, dan mengaplikasikan matematika untuk memecahkan masalah dunia nyata. Penelitian ini juga menunjukkan bahwa integrasi teknologi dalam pembelajaran matematika dapat memperkaya pengalaman belajar siswa, meningkatkan keterlibatan, dan mendukung pengembangan keterampilan matematika yang lebih baik.

Improving Understanding of Mathematical Concepts Through Contextual Teaching and Learning (CTL): A Case Study at Junior High School 14 Pematangsiantar Nazwa, Putri; Apriani, Dian Elita; Siburian, Gusti Magdalena Br.; Situmorang, Romaulika; Simamora, Septri Amelia; Rambe, Yarti Melvina; Aprilia , Yesnita; Siregar , Budi Halomoan
Jurnal Pendidikan Matematika (JPM) Vol 11 No 1 (2025): Jurnal Pendidikan Matematika (JPM)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/jpm.v11i1.23382

Mathematics learning at the secondary school level plays an important role in fostering a deep understanding of ideas among students. The main purpose of this research is to see how effectively SMP Negeri 14 Pematangsiantar’s students understand mathematical concepts through CTL learning. This research applies a quantitative approach with a true experimental design. The study involved 30 seventh-grade students, divided into an experimental group (15 students of class VII-1) and a control group (15 students of class VII-3). The experimental group received learning with the CTL approach, which incorporated real-life problem-solving activities, discussions, and hands-on contextual exercises related to fractions. Meanwhile, the control group was taught using the expository method. Both groups were given a pre-test and post-test to measure the improvement of learning outcomes. The control group had an average post-test score of 54.00, while the experimental group had a significantly higher score of 90.33 (p < 0.001). Data were analyzed using an independent sample t-test, which confirmed that the difference in post-test scores between the two groups was statistically significant. The findings indicated that the CTL approach significantly improved students' conceptual understanding. The practical implications of this study suggest that integrating contextual learning strategies into mathematics instruction can enhance students’ ability to comprehend abstract concepts, particularly fractions. The findings of this study support the CTL approach as an effective and recommended instructional strategy for improving students' conceptual understanding of fractions. Implementing this approach can contribute to more engaging and meaningful mathematics education at the secondary school level.

the Pengaruh alat peraga mesin pembagian berbasis Realistic Mathematic Education (RME) terhadap pemahaman konsep siswa pada materi operasi pembagian di kelas VII SMP Yayasan Perguruan IRA Tarigan, Adelia Br; Sibarani, Mikhael Agus Tua; Silvina, Nur; Tarigan, Putri Br; Tampubolon, Rafael; Simbolon, Stevania Sri Debbye Br; Siregar, Budi Halomoan
UNION : Jurnal Ilmiah Pendidikan Matematika Vol 13 No 1 (2025)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/union.v13i1.18524

The problem found is the low understanding of concepts on division operation material. This is due to the difficulty of understanding the abstract material. This is triggered by the lack of utilization of relevant learning media to overcome it. This study examines the effect of RME-based division machine props on the conceptual understanding of division among seventh-grade students at SMP Yayasan Perguruan IRA. This research design uses a pre-test and post-test control group as part of a quasi-experimental research method with a quantitative approach. The population of this study was all seventh-grade students, with a sample of 18 students in the control class and 18 in the experimental class. In the post-test, the control and experimental classes obtained sig <0.05, so it was stated that there was a significant difference between the experimental class and the control class. Thus, the study results showed a substantial effect in applying Realistic Mathematic Education (RME)-based division machine props on understanding the concept of division operations in class VII of SMP Yayasan Perguruan IRA. The findings highlight the practical effect of RME-based teaching aids in improving students' conceptual understanding and emphasize the need for scalable, inclusive teaching aids in mathematics education.

Development of Electronic Comic Based on Realistic Mathematics Learning to Improve Students' Concept Comprehension Ability Saragih, Patricia; Siregar, Budi Halomoan
Jurnal Pendidikan Matematika Vol. 16 No. 2 (2025): July 2025
Publisher : Jurusan Pendidikan Matematika FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpm.v16i2.278

This research is motivated by the low student concept comprehension ability caused by the teacher-centered learning process and the absence of additional media used during the learning process. The purpose of this research is to develop an electronic comic based on Realistic Mathematics Learning with valid, practical, and effective criteria in improving the ability to understand concepts. This research uses the ADDIE development model: analysis, design, development, implementation and evaluation. The data collection techniques used are observation, interviews, questionnaires, and tests. Instruments for data collection include electronic comic validity questionnaire sheets, practicality questionnaires from teachers and students, concept comprehension ability tests, and student response questionnaires. The research findings show that electronic comics based on realistic mathematics learning developed on social arithmetic materials are suitable for use as a learning medium that can improve students' concept comprehension ability because they have been declared valid, practical, and effective. This is based on the results of the validation from media expert 4.5 (very valid) and 4.41 (very valid) from the material expert, the results of the practicality questionnaire from the teacher of 90% (very practical), and the results of the practicality questionnaire from students of 80.18% (very practical), the results of the test of students' conceptual comprehension ability, including (1) the completeness of classical concept comprehension of 87.18%; (2) the achievement of each indicator of concept comprehension of 97.20%, 97.20%, 74.35%, and 69.23%; (3) increased conceptual comprehension ability with N-Gain by 0.73; and (4) positive response from students of 90.25%.

Pengaruh Pendekatan Deep Learning Berbantuan Media PPT Interaktif Berbasis Geogebra terhadap Hasil Belajar Trigonometri Siswa Siregar, Fransisco Dinata; Adrianto, Ilham; Siagian, Yerikho Aprillio; Azizi, Muhammad Farhan; Siregar, Budi Halomoan
JURNAL RISET PEMBELAJARAN MATEMATIKA SEKOLAH Vol. 9 No. 2 (2025): Jurnal Riset Pembelajaran Matematika Sekolah
Publisher : Program Studi Pendidikan Matematika FMIPA Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jrpms.092.10

Penelitian ini bertujuan untuk menganalisis pengaruh pendekatan pembelajaran berbasis Deep Learning yang dipadukan dengan media PowerPoint interaktif berbasis GeoGebra terhadap hasil belajar matematika, khususnya pada topik trigonometri. Metode penelitian menggunakan eksperimen dengan desain One-Group Pre-Test-Post-Test pada siswa kelas X SMK Swasta Bina Satria. Hasil uji-t menunjukkan adanya peningkatan signifikan pada nilai rata-rata dari 49,38 menjadi 68,12 (p < 0,05) dengan N-Gain sebesar 0,37 (kategori sedang). Selain itu, 95,8% siswa memberikan respon positif terhadap pembelajaran. Temuan ini menunjukkan bahwa integrasi Deep Learning dengan media interaktif efektif dalam meningkatkan pemahaman konsep matematika dan dapat dijadikan alternatif strategi pembelajaran di sekolah menengah kejuruan

Digital Media Innovation Based on Multimedia Cognitive and Constructivist Theory in a Cultural Context: Encouraging Students' Higher Order Thinking Skills Siregar, Budi Halomoan; Panjaitan, Asmin; Hasratuddin, Hasratuddin; Kairuddin, Kairuddin; Mulyono, Mulyono; Rahman, Arief Aulia
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 8, No 1 (2024): January
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v8i1.16800

The high-order thinking skills of students in Indonesia are classified as low, this is in line with the results of diagnostic tests conducted in class IX junior high school. Thus, it is necessary to develop digital media based on multimedia and constructivist cognitive theory with cultural context as one of the alternative solution. This study aims to (1) develop digital learning media based on constructivist and cognitive multimedia theories with a cultural context that fulfills the categories of validity, practicality and effectiveness; and (2) improve students' high-order thinking skills after using these media in the learning process. The research subjects were 30 students in class IX junior high school and the research objects were digital learning media based on constructivist theory and cognitive multimedia with a cultural context to improve students' high-level thinking skills on the topic of dilation. This is a research design with the Plomp model, which consists of (1) Preliminary research; (2) Prototyping phase; and (3) Assessment phase. The research instruments used were interviews, questionnaires and tests. The results showed that the product developed was included in the very valid, very practical, and effective category, where: (a) classical learning completeness reached 97%; (b) positive response by product users reached 97%; and (c) the N-Gain value was 0.791 in the very high category. Thus, it can be stated that the product meets the quality standard criteria, where the product can be used to improve students' high-level thinking abilities.

Analisis kesulitan siswa dalam pemecahan soal cerita sistem persamaan linear dua variabel berdasarkan tahapan polya Arsandy, Qory Septiani; Siregar, Anisa Rahmadani; Sinuhaji, Ribka Dameria; Ambarita, Zefanya Tabita; Sinaga, Victory Rajani; Siregar, Budi Halomoan
Papanda Journal of Mathematics and Science Research Vol. 4 No. 2 (2025): Volume 4 Nomor 2 September 2025
Publisher : Papanda Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar

Mathematics is one of the subjects that plays an important role in training students' critical thinking and problem-solving skills. However, in practice, many students experience difficulties, especially when faced with story problems that require the ability to understand the context and translate it into a mathematical model. This study aims to analyze students' difficulties in solving word problems on the subject of Two-Variable Linear Equation Systems (SPLDV) based on Polya's problem-solving stages. This study uses a qualitative descriptive approach with 26 ninth-grade students from SMP Negeri 27 Medan as subjects. The research instrument was a written test on SPLDV story problems and was analyzed using Polya's stages, namely understanding the problem, devising a plan, implementing the plan, and checking the results. The results showed that students experienced difficulties at almost every stage. At the stage of understanding the problem, some students failed to identify important information and determine the variables correctly. In the planning stage, many students had difficulty converting the story problems into a system of linear equations. In the execution stage, errors mainly occurred in calculation operations and the application of the elimination and substitution methods. Meanwhile, in the checking stage, most students were unable to relate the solution to the context of the problem and rarely verified their answers. These findings confirm that students' difficulties are systematic, whereby failure at one stage has an impact on the next stage. Therefore, teachers need to emphasize problem-based learning by providing systematic exercises, accustoming students to verification, and training mathematical representation skills so that students are able to minimize errors in solving SPLDV story problems.

Effect of Deep Learning Approach With GeoGebra-Based Interactive PowerPoint and Animated Videos on Concept Understanding Silvina, Nur; Tumanggor, Abednego Pradja; Tarigan, Adelia Br; Lubis, Dara Muna; Sibarani, Mikhael Agus Tua; Siregar, Budi Halomoan
Jurnal Pendidikan Matematika Universitas Lampung Vol. 13 No. 3 (2025): Jurnal Pendidikan Matematika Universitas Lampung
Publisher : Faculty of Teacher Training and Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mtk/v13i3.pp157-171

This study focused on identifying the magnitude of the impact of a deep learning approach assisted by GeoGebra-based interactive PowerPoint media and animated videos on junior high school students’ conceptual understanding, particularly on the topic of straight-line equations. The research employed a quasi-experimental methodology with a pretest–posttest design involving two groups: the experimental group and the comparison group. The measurement instruments consisted of essay questions, and the data were analyzed using normality testing, homogeneity testing, and an independent t-test. The findings revealed a significant improvement in the experimental group’s conceptual understanding. The higher average posttest score compared to the control group confirmed that the use of interactive media enhanced students’ understanding of the material in a more visual and engaging way. Furthermore, the deep learning strategy optimized students’ active involvement in understanding and connecting relevant material to real-life situations. Thus, the synergy between digital media and this learning strategy was proven to effectively enhance conceptual understanding.

ANALISIS KESALAHAN SISWA KELAS VII SMP DALAM MENYELESAIKAN SOAL PERTIDAKSAMAAN LINEAR SATU VARIABEL BERDASARKAN TEORI KASTOLAN Meridina, Ramanda; Gultom, Kevin Frans Samuel; Br Barus, Lisda Karolin; Nurpadila, Nurpadila; Denada, Elsa; Siregar, Budi Halomoan
Pedagogy: Jurnal Pendidikan Matematika Vol. 10 No. 4 (2025): Pedagogy : Jurnal Pendidikan Matematika
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/pedagogy.v10i4.7068

Pertidaksamaan linear satu variabel (PtLSV) merupakan salah satu materi dasar dalam matematika SMP yang berperan penting dalam membentuk kemampuan berpikir logis dan pemecahan masalah. Namun, kenyataannya banyak siswa masih mengalami kesulitan dalam memahami konsep, menyusun model matematis, dan menyelesaikan persoalan PtLSV secara runtut. Penelitian ini bertujuan untuk menganalisis kesalahan siswa kelas VII SMP dalam menyelesaikan soal PtLSV berdasarkan teori Kastolan. Penelitian dilakukan dengan pendekatan deskriptif kualitatif dengan 20 siswa di SMP Swasta Muhammadiyah 15 Sei Cabang melalui observasi, wawancara dan pemberian tes tertulis kepada siswa. Kemudian hasil tes dianalisis berdasarkan kategori kesalahan konseptual, prosedural, dan perhitungan. Di antara ketiganya, kesalahan terbesar adalah kesalahan konseptual, kesalahan prosedural, dan kesalahan perhitungan. Hal ini menunjukkan bahwa pemahaman konsep siswa masih memerlukan penguatan lebih lanjut, sehingga guru dianjurkan untuk lebih menekankan penguasaan konsep dasar, dengan menerapkan pendekatan pembelajaran dan media pembelajaran yang relevan.

ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL FUNGSI LINIER BERDASARKAN TAKSONOMI ASHLOCK Daulay, Andini Sahrani; Simatupang, Nashwa Rahmadhani; Larasati, Anisah; Rumahorbo, Dimas; Lubis, Kholishoh Humairoh; Siregar, Budi Halomoan
Pedagogy: Jurnal Pendidikan Matematika Vol. 10 No. 4 (2025): Pedagogy : Jurnal Pendidikan Matematika
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/pedagogy.v10i4.7069

Penelitian ini berfokus pada analisis kesalahan yang dibuat oleh siswa saat mengerjakan soal fungsi linier dengan merujuk pada Taksonomi Ashlock. Metode penelitian yang diterapkan adalah deskriptif kualitatif dengan melibatkan 24 siswa kelas X di MAN 1 Medan pada tahun ajaran 2025/2026. Instrumen yang digunakan adalah empat soal uraian yang terdiri dari kategori mudah, sedang, dan sulit. Penilaian terhadap jawaban siswa dilakukan dengan mengidentifikasi kesalahan berdasarkan kategori yang terdapat dalam Ashlock, yaitu kesalahan operasi, kesalahan perhitungan yang jelas, algoritma yang tidak tepat, dan respon acak. Hasil analisis menunjukkan bahwa kesalahan yang paling sering teridentifikasi adalah respon acak dengan kriteria rendah, diikuti oleh kesalahan perhitungan yang jelas, kategori algoritma yang tidak tepat, dan kesalahan operasi. Temuan ini mengindikasikan bahwa banyak siswa mengalami kesulitan dalam menyusun langkah-langkah penyelesaian yang terstruktur meskipun mereka mengerti konsep dasar fungsi linier; oleh karena itu, penting bagi guru untuk merancang metode pengajaran yang lebih fokus pada pemahaman mendalam mengenai prosedur dan konsep serta mendorong siswa untuk memeriksa kembali hasil perhitungan guna meminimalkan kesalahan serupa.

Co-Authors Abil Mansyur, Abil Adam Zuhri Prika Adrianto, Ilham Ambarita, Samuel Yordan Ambarita, Zefanya Tabita Angraini, Shepia Apriani, Dian Elita Aprilia , Yesnita Arsandy, Qory Septiani Asmin Panjaitan Azizi, Muhammad Farhan Br Barus, Lisda Karolin Br Zandroto, Nurcahaya Cut Rania Andini Dara Muna Lubis Daulay, Andini Sahrani DAVID SITINDAON Dea Athalia Siregar DEBORA SINAGA Denada, Elsa Destia Krisela Simamora Dhuha, Nadira Kaylana Dwi Ayu Febrianti Elva Waniza Engeli Emmanuela Br Tambunan Gisti, Rival Ananda Gita Helena Tarigan Guci, Putri Tipakaden Gultom, Glori Cahaya Gultom, Kevin Frans Samuel Gustia Louisa Nainggolan Hafiza, Mutia HALOHO, EKA CHRISTY Harefa, Ilhamsyah Hariyanti Hariyanti HARRY SIHOTANG Hasratuddin Hasratuddin Hendra Cahyadi Manurung HUTAPEA , YOKEBET Hutapea, Yonata Ilham Adrianto Indah Aulia Pratiwi Jesiska Anjelin Siagian Jhosua Berutu JULIANA MANULLANG Julisa Ayu Lestari July Yanty Tanjung Kaban, Rifka Elianti br Kairuddin . Khairunnisa' Nabilah Khumairah, Azra Larasati, Anisah Leonardo Turnip LISBETH SILALAHI Lubis, Dara Muna Lubis, Kholishoh Humairoh MANIK , ROMAIDA FITRIANI BR Marajohan Panjaitan Marbun, Marthin Mei Wika T Sihombing Mentari Sukma Meridina, Ramanda Mikhah Adillah Zendrato Muhammad Aldi, Muhammad Muhammad Farhan Azizi Mulyono Mulyono Naibaho, Joel Shintong NASIB SAING NASUTION , NUR HAFIZAH Nasution, Nur Syahrini Nazhatul Sahima Mohd Yusoff Nazwa, Putri Nazwah Indri Agista Lubis Ndor Damayanti Silalahi Nia Fadilla Nilam Cahya Novita Sari Maria Nurpadila, Nurpadila Nurul Masita PURBA, DITA LOVIANNA Purba, Fernando Putri Andini Putri Rizki Putri, Imelda Rahman, Arief Aulia Raissya Adhawina Rambe, Yarti Melvina Rehana, Rehana Rosi Ade Putri Simanjuntak Rumahorbo, Dimas Ruth Sahanaya Manik Salamah Sulistya Ningrum Samosir, Martha Indah Saputra, Yoga Aulia SARAGIH , DWITA LESTARI Saragih, Afta Geosasmita Saragih, Patricia Saragih, Saripah Erguna br Siagian, Yerikho Aprillio Sibarani, Khoirunnisa Sibarani, Mikhael Agus Tua Siburian, Gusti Magdalena Br. Sihombing, Kevin Marito Sihombing, Thresia Veronika Silaban, Gebriel Saron Silvina, Nur Simamora, Eka Finanti Septiana Simamora, Septri Amelia SIMANIHURUK, SRI VIONI NOVENA Simanungkalit, Imel Simatupang, Nashwa Rahmadhani Simbolon, Stevania Sri Debbye Br Sinaga, Victory Rajani Sinta Marintan Sinaga Sinuhaji, Ribka Dameria Siregar, Anisa Rahmadani Siregar, Fransisco Dinata Siregar, Nur Hasanah Sitepu, Iren Dwi Adinda Siti Khafifah F Siti Sarah, Siti Sitorus, Grace Elicia Situmorang, Romaulika Situmorang, Sylva Anastasya Stephani Theresa Vania Tampubolon Sulaiman, Raysah Puteri Sutan Ismail Akbar Rafsanjani Lubis Syamsinah, Chairi TABITHA SITORUS Tampubolon, Rafael Tarigan, Adelia Br Tarigan, Nafa Cleo Wulandari Tarigan, Putri Br Tarigan, Septi Agita Tiolina Maria Munthe Tumanggor, Abednego Pradja Vico Putra Sidauruk Wardana, Aini Waruwu, Fertianus Yesica Siahaan, Chrystin Yulia Ayu Utami Tarigan Yusuf Khalifadin Azis

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