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Izwita Dewi

Universitas Negeri Medan

Author-ID : 2512745

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Hakikat Matematika dalam Ruma Bolon Suku Batak Toba Simanjuntak, Sinta Dameria; Dewi, Izwita; Ahyaningsih, Faiz; Sitepu, Israil
Indiktika : Jurnal Inovasi Pendidikan Matematika Vol. 7 No. 2 (2025): Indiktika : Jurnal Inovasi Pendidikan Matematika
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/indiktika.v7i2.17010

Ruma Bolon adalah rumah tradisional kebanggaan Suku Batak Toba yang memiliki nilai budaya dan gaya bangunan yang unik. Tujuan dari penelitian ini adalah untuk mengkaji nilai matematika yang terkandung dalam pembuatan dan desain Ruma Bolon, serta mendeskripsikan bagaimana nilai-nilai matematika tersebut mencerminkan konsep geometri dan proporsi yang ada dalam bangunan Ruma Bolon dari suku Batak Toba. Pendekatan etnomatematika digunakan untuk menyelidiki bagaimana konsep-konsep matematika berhubungan dengan elemen-elemen bangunan tradisional suku Batak Toba ini, seperti simetri, bentuk geometris pada struktur bangunan, dan pola ukiran. Hasil penelitian menunjukkan bahwa Ruma Bolon tidak hanya berfungsi sebagai tempat tinggal, tetapi juga memiliki simbolisme matematika yang dalam dan unik. Simbolisme ini mencerminkan keseimbangan di langit yaitu kaitannya dengan Mula Jadi Nabolon, keseimbangan dalam kehidupan sosial atau bermasyarakat, dan penghormatan kepada alam dan leluhur sebagai suatu kesatuan yang utuh. Studi ini menghasilkan kesimpulan bahwa matematika dalam bangunan Ruma Bolon bukan sekadar estetika, tetapi juga merupakan manifestasi dari nilai-nilai budaya yang mengakar kuat dan bermakna yang dalam untuk kehidupan masyarakat Batak Toba.

Improving the Conceptual Understanding Ability of Grade VIII Students Through the Guided Discovery Model Assisted by Interactive E-Modules Dewantara, Ki Hajar; Dewi, Izwita
Jurnal Pendidikan Amartha Vol 4, No 1 (2025): May 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/jpa.v4i1.3809

This research aims to: (1) To find out how the use of a guided discovery model assisted by interactive e-modules can increase students' understanding of concepts. (2) To determine the increase in students' understanding of concepts after using the guided discovery model assisted by interactive e-modules. The subjects of this research were all 33 students in class VIII-3. The first procedure of this research is to give an initial test to students, in order to see students' ability to understand initial concepts, the second is to carry out learning using a guided discovery model assisted by interactive e-modules with rectangular material. The research consisted of 2 cycles with a teaching process of 4 meetings, where after 2 meetings in each cycle a concept understanding test was given to see students' concept understanding abilities. The form of questions for each test is a description. Before the test is tested, it is first validated by a validator. In the initial test, students' conceptual understanding abilities were in the very poor category with an average of 29, where no students experienced the level of learning completeness. After the implementation of cycle I, the level of students' ability to understand concepts was in the poor category with an average of 57.93 and 5 students (15.15%) reached the level of learning completeness. In the implementation of cycle II, the level of students' ability to understand concepts was in the very good category with an average of 87.31 and 30 students (90.90%) reaching the criteria for completion. The G value on the gain index is 0.70035 in the high category, as well as the overall indicator criteria for understanding concepts and observations are in the good category (61-80%). Based on the research analysis, it is clear that the use of a guided discovery model assisted by interactive e-modules can improve the ability to understand concepts in class VIII students.

The Effect Of Using Multimedia Macromedia Flash On Student Mathematics Communication At SMP Negeri 1 Labuhan Deli Fitri Adhiningsih Rizky; Izwita Dewi
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1742

This research is a quasi-experimental research. The research conducted at SMP Negeri 1 Labuhan Deli aims to find out. 1) To find out how the mathematical communication ability of students who learn to use Macromedia Flash. 2) To find out how the mathematical communication ability of students who learn without using Macromedia Flash. 3) To find out whether the mathematical communication of students who learn using Macromedia Flash media is better than the mathematical communication of students who learn without using Macromedia Flash media for class VII students at SMP Negeri 1 Labuhan Deli T.A. 2021/2022. The population in this study were all students of class VII at SMP Negeri 1 Labuhan Deli. Using a homogeneous technique, samples were taken from 2 classes of population. One class was used as the experimental class, namely class VII-2 which was taught with Macromedia Flash and class VII-3 which was used as the control class, namely class which was taught without using Macromedia Flash. As a data collection tool using PreTest and PostTest. In this study 1) the mathematical communication ability of students learning to use Macromedia Flash with an average pretest of 67.77 and a posttest of 85.54. 2) the mathematical communication ability of students who learn without using Macromedia Flash with an average pretest of 67.13 and a posttest of 77.54. then testing the hypothesis for learning outcomes using paired t-test. after testing the data, it turns out that the results of testing the ability of learning outcomes in the experimental class at the pretest level α = 0.05 with Lcount < Ltable, namely 0.09452 <0.192 and posttest 0.1228 <0.192 , and the results of testing the ability of learning outcomes in the control class at the pretest level α = 0.05 with Lcount < Ltable, namely 0.1014 < 0.184 and posttest 0.1659 < 0.184, then H0 is accepted and Hi is rejected. Thus it can be concluded that the mathematical communication ability of students who use macromedia flash media are better than those without using macromedia flash media.

PENGEMBANGAN BAHAN AJAR PEMBELAJARAN IPA SD SEBAGAI SUMBER BELAJAR MAHASISWA PGSD FIP UNIMED Rozi, Fahrur; Fauzi, KMS. M. Amin; Dewi, Izwita
JGK (Jurnal Guru Kita) Vol. 9 No. 1: Desember 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jgk.v9i1.64304

Berdasarkan kondisi latar belakang masalah, diperoleh beberapa poin penting: 1) Literasi sains merupakan keterampilan yang sangat diperlukan di abad ke-21, 2) Belum ada pengembangan bahan ajar IPA di SD yang berbasis Etnosains, 3) Kemampuan literasi sains mahasiswa PGSD masih rendah, 4) Perkuliahan masih berfokus pada teori dan konsep saja, dan 5) Hasil analisis kurikulum yang dilakukan oleh program studi bertujuan menghasilkan lulusan yang unggul dalam penggunaan teknologi informasi dan komunikasi serta kearifan lokal secara nasional pada tahun 2030. Tujuan penelitian ini adalah mengembangkan produk dan melakukan uji coba kelayakan bahan ajar pembelajaran IPA SD berbasis Etnosains untuk meningkatkan kemampuan literasi sains mahasiswa PGSD FIP UNIMED. Penelitian ini menggunakan Model 4-D, yang meliputi empat tahap pengembangan: tahap pendefinisian (Define), tahap perencanaan (Design), tahap pengembangan (Develop), dan tahap penyebaran (Disseminate). Selain menghasilkan produk bahan ajar, penelitian ini juga memberikan pengalaman bagi mahasiswa dan dosen dalam melaksanakan pembelajaran berbasis Etnosains untuk meningkatkan literasi sains. Penilaian kelayakan isi materi menunjukkan hasil sebesar 86,61% (Valid/Layak), kelayakan tampilan dan teknologi sebesar 81,50% (Valid/Layak), serta aspek kepraktisan sebesar 86,30% (Valid/Layak). Efektivitas produk, berdasarkan pre-test dan post-test, menunjukkan hasil sebesar 82,55%. Berdasarkan hasil uji kelayakan, kepraktisan, dan efektivitas, bahan ajar ini sangat layak, praktis, dan efektif untuk digunakan.

PENGARUH MODEL PEMBELAJARAN INKUIRI BERBANTUAN MEDIA GEOGEBRA UNTUK MENINGKATKAN KEMAMPUAN PEMAHAMAN KONSEP MATEMATIKA PESERTA DIDIK KELAS X Nella Putri Sihombing; Izwita Dewi
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 03 (2025): Volume 10 No. 3 September 2025 In Order
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i03.34368

The background of this study is the low level of students' understanding of mathematical concepts, especially in trigonometry, which requires innovation in learning. The inquiry learning model was chosen because it emphasizes student activities in discovering concepts through questioning, investigating, and proving, while Geogebra was used as an interactive medium to visualize mathematical concepts. This study aims to determine the effect of the Geogebra assisted inquiry learning model on the mathematical concept comprehension abilities of tenth-grade students. The research method used was a quasi-experiment with a one-group pretest-posttest design. The research sample consisted of 36 tenth-grade students selected through purposive sampling. The research instrument was a test of mathematical concept comprehension in the form of essay questions compiled based on four indicators, namely restating a concept, giving examples and non-examples of a concept, presenting concepts in mathematical representations, and applying a concept or problem-solving algorithm. The data were analyzed through validity, reliability, difficulty level, discriminating power, and normality tests. Hypothesis testing was conducted using a t-test with the help of SPSS software. Based on the t-test results, the average pretest score for students was 9.4722, while the average posttest score increased to 12.8611 after participating in learning with the GeoGebra-assisted inquiry model. Thus, there was a difference in the average increase of 3.3889 points, so was rejected and was accepted. This proves that there is an effect of media-assisted inquiry using Geogebra on the mathematical concept comprehension abilities of 10th grade students at SMA Negeri 1 Doloksanggul.

PENGARUH PENDEKATAN MATEMATIKA REALISTIK BERBASIS ETNOMATEMATIKA TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIS PESERTA DIDIK KELAS VII Aulia Anggun Mutiara; Izwita Dewi
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 03 (2025): Volume 10 No. 03 September 2025 Terbit
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i03.34373

The low level of students’ mathematical critical thinking skills at SMP Negeri 3 Satap Teluk Mengkudu remains a challenge in the mathematics learning process. This study aims to investigate the effect of the realistic mathematics education approach based on ethnomathematics on the critical thinking skills of seventh-grade students. The research was conducted in the first semester of the 2025/2026 academic year using a one-group pretest-posttest design. The sample was selected through purposive sampling, with class VII-1 designated as the experimental group. Descriptive analysis results indicate an increase in the mean score from 48.05 in the pretest to 78.71 in the posttest. The paired sample t-test produced a significance value of 0.000 (<0.05), indicating a significant difference between the pretest and posttest results. Furthermore, the effect size calculation of 3.68 demonstrates a very large impact. Thus, it can be concluded that the realistic mathematics education approach based on ethnomathematics is effective in enhancing students’ mathematical critical thinking skills. Future studies are recommended to expand the scope and explore other aspects, such as conceptual understanding, problem-solving ability, and creative thinking.

Epistemological Perspective of Mathematical Philosophy On Technology-Based Learning Siregar, Nurhasanah; Dewi, Izwita; Ningsih, Faiz Ahya
Jurnal Pendidikan Matematika IKIP Veteran Semarang Vol 8 No 1 (2024): Journal of Medives : Journal of Mathematics Education IKIP Veteran Semarang
Publisher : Urogram Studi Pendidikan Matematika, Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/medivesveteran.v8i1.2947

This research is a literature study (library research) that uses a qualitative approach. The aim of this research is to examine the extent to which technology plays a role in mathematics learning from the perspective of the epistemology of mathematical philosophy. The study of the epistemology of the philosophy of mathematics that is being discussed is how does the development of the philosophy of mathematics influence technology? What is the relationship between the philosophy of mathematics and technology-based learning? As well as examples of technology-based mathematics learning models. The results and discussion of this article can be concluded: Philosophy is a science that has a close relationship in human life.The philosophy of mathematics influences the development of technology in general. Technological developments influence the development of learning. From a learning perspective, technology is not only something related to machines, but also related to people, ideas and activities in learning. The use of technology in the form of hardware and software can improve student learning outcomes. Currently, there are many software tools available for use in learning, such as GeoGebra. Choosing the right learning model and mathematics learning technology can make learning more effective

The Relation Between Mathematics Philosophy And Culture-Based Learning Model Hasibuan, Eka Khairani; Dewi, Izwita; Ahyaningsih, Faiz
Jurnal Pendidikan Matematika IKIP Veteran Semarang Vol 8 No 1 (2024): Journal of Medives : Journal of Mathematics Education IKIP Veteran Semarang
Publisher : Urogram Studi Pendidikan Matematika, Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/medivesveteran.v8i1.2982

The aim of this study is to study the correlation of mathematical philosophy with cultural-based learning models. The method of research used is the method of library research, i.e. conducting studies related to mathematical philosophy, philosophical mathematics learning, culture-based mathematic learning, the connection of mathematically philosopher with ethnomatematics, the relationship of mathematic philosophies with cultural-based learning models. The results of the research have been obtained that the philosofy of maths, the model of learning based on culture, and ethnomathematics have close connections in the context of understanding and teaching of Mathematics. Mathematical philosophy deals with the foundations of mathematical epistemology and ontology, while a culture-based learning model emphasizes the integration of values and cultural contexts in mathematics learning. Ethnomatematics refers to the study of mathematical ways of thinking in a particular culture. By understanding the cultures, traditions, and world views of a particular society, ethnomathematics can help develop more culturally relevant and meaningful learning models. Therefore, the interrelationship between mathematical philosophy, culture-based learning models, and ethnomathematics can create a more holistic and contextual approach to mathematics learning. Keywords: Mathematical Philosophy, Cultural Based Learning Model, Ethnomathematics

Philosophical Harmony: Understanding the Influence of Pedagogical Philosophy in Mathematical Teaching Elfitra, Elfitra; Dewi, Izwita; Ahyaningsih, Faiz
Jurnal Pendidikan Matematika IKIP Veteran Semarang Vol 8 No 1 (2024): Journal of Medives : Journal of Mathematics Education IKIP Veteran Semarang
Publisher : Urogram Studi Pendidikan Matematika, Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/medivesveteran.v8i1.2973

This article investigates the profound implications of the application of pedagogical philosophy in mathematics teaching. Highlighting the key roles of constructivist philosophy, humanism, and ethics, the study discusses how these principles shape the way teachers approach mathematics teaching and influence student learning experiences. Through in-depth analysis, this article underlines the importance of philosophical harmony in creating an inspiring and effective learning environment. The integration of constructivist concepts emphasizes the active role of students in building their own knowledge, while the humanistic approach highlights aspects of creativity and personal development. In addition, this article explores how ethics can be integrated into mathematics learning, creating students who are not only technically skilled but also morally responsible. In conclusion, this article provides a deeper understanding of how pedagogical philosophy becomes a catalyst for positive transformation in mathematics teaching

Implementation of Mathematics Philosophy In Multicultural Education Br Ginting, Siti Salamah; Dewi, Izwita; Ahyaningsih, Faiz
Jurnal Pendidikan Matematika IKIP Veteran Semarang Vol 8 No 1 (2024): Journal of Medives : Journal of Mathematics Education IKIP Veteran Semarang
Publisher : Urogram Studi Pendidikan Matematika, Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/medivesveteran.v8i1.2946

The aim of this research is to explore the implementation of mathematical philosophy in multicultural education. The research method used is the library research method, namely by conducting studies related to multicultural education, philosophy of mathematics, and the implementation of philosophy of mathematics in multicultural education. The research results showed that mathematical philosophy can be implemented in multicultural education, namely in the field of epistemological studies. In the field of epistemological studies, the philosophy of mathematics talks about the origins of the formation of mathematics and the study of knowledge about mathematics. The study of knowledge about mathematics cannot be separated from the characteristics of certainty, truth, objectivity, universalism and rationality. These characteristics can ultimately become the forerunner in the implementation of multicultural education. So as to create multicultural education that upholds justice, equality and unity.

Co-Authors Ade Andriani Ade Andriani Ade Irwansah Nasution Adi Semarto Berutu Agustia, Anjelly Ahmad Landong Ahyaningsih, Faiz Ahyaningsih, Faiz . Amry, Zul Ana Febrianti Siregar Aulia Anggun Mutiara Dewantara, Ki Hajar Dian Armanto Doriyani . Nasution Doriyani Nasution, Doriyani Dyan Wulan Sari Hs Edi Syahputra Edy Surya Edy Surya Eka Margareta Sinaga Elamanani Simamora Elfitra Elfitra Elia Elfani Elidar Tanjung Elmanani Simamora Elvis Napitupulu, Elvis Erlinawaty Simanjuntak Fadhilah, Puji Chairu Fahrur Rozi Fairus, Fairus Faiz Ahyaningsih Fauzi, Kms. M. Amin Fitri Adhiningsih Rizky Fitry Wahyuni Halim Simatupang Hamidah Nasution Hamidah Nasution Haris Hidayat Ismail Hasibuan, Eka Khairani Hasratuddin Hasratuddin Hasratuddin Hasratuddin Hasratuddin Siregar Hasratuddin Siregar Hermawan Syahputra Hetty Elfina Hijrah Nasution Hikmatul Fadhilah Sianipar Hizmi Wardani Husain, Yasmin Khamila Ida Karnasih Insan Taufik Irfan Hilmi Israil Sitepu Jonter . Situngkir Khairani, Dewi Khairani, Nerli KMA Fauzi KMS. M. Amin Fauzi Kms. Muhammad Amin Fauzi Kms. Muhammad Amin Fauzi KMS. Muhammad Amin Fauzi Lasker Pangarapan Sinaga Lena Rosdiana Pangaribuan Lisa Lisa Lubis, Adelina Natalia Manullang, Mindo Mendrofa, Ratna Natalia Michael Christian Simanullang Mifta Aqila Nasution Milda Rizky Novriani Monalisa Sianturi, Maria Muhammad Noer Fadlan Mukhtar Mukhtar Mulyono Mulyono Mulyono Mulyono Nailul Himmi Hasibuan, Nailul Himmi Nasution, Dinda Indriani Nasution, Doriyani . Nasution, Hamidah . Nazara, Erlina Nella Putri Sihombing Nenta Dumalia Siregar NETTI KARIANI MENDOFA Nina Fadilah Ningsih, Faiz Ahya Novita Sari Nur Indah Simamora Nur Rahmi Rizqi Nurhadijah Nurhadijah Nurhasanah Siregar . Nurliani Manurung Putri Elmaretha Purba Putri Elmaretha Purba Rahim, Rani Rajagukguk, Atma Wijaya Rasida Aulia Sari Retno Windasari Rina Ardillah Lubis Robby Rahmatullah Ronahaya Pohan, Irna Dwi Rizki Rosliana Harahap Sahat Saragih Sahat Saragih Sahat Saragih Said . Iskandar Samosir, Yuni Samuel Tondang Sibarani, Sariayu Sidabutar, Natalia ayu Simamora, Elmanani Simanjuntak, Sinta Dameria Siregar, R.Maisaroh Rezyekiyah Siti Lisiani Siti Maysarah Siti Salamah Br Ginting Siti Zahara H.Harahap Soraya Shahabiah Sri Rahma Yani Harahap Sri Wahyuni Suci Dahlya Narpila, Suci Dahlya Sumarno . Tambunan, Lois Tarigan, Yossie Camelia Sari Taruli Silalahi Telaumbanua, Yakin Niat Tondang, Samuel Yulita Molliq Rangkuti Yumira Simamora Yunus Shobrun

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