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All Journal Jurnal Pendidikan Vokasi Jurnal Pendidikan Matematika AdMathEdu : Jurnal Ilmiah Pendidikan Matematika, Ilmu Matematika dan Matematika Terapan Journal on Mathematics Education (JME) Jurnal Infinity Journal on Mathematics Education (JME) Jurnal Inovasi Teknologi Pendidikan AKSIOMA: Jurnal Program Studi Pendidikan Matematika Jurnal Elemen JPPM (JURNAL PENELITIAN DAN PEMBELAJARAN MATEMATIKA) Al Ishlah Jurnal Pendidikan Wikrama Parahita : Jurnal Pengabdian Masyarakat PAEDAGOGIA BAREKENG: Jurnal Ilmu Matematika dan Terapan Beta: Jurnal Tadris Matematika Al-Khwarizmi: Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam JURNAL PENDIDIKAN MIPA (JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Jurnal Eduscience (JES) KAIBON ABHINAYA : JURNAL PENGABDIAN MASYARAKAT Range : Jurnal Pendidikan Matematika Mosharafa: Jurnal Pendidikan Matematika Plusminus: Jurnal Pendidikan Matematika Indonesian Journal of Educational Development (IJED) Sosio-Didaktika: Social Science Education Journal International Journal of Humanities Education and Social Sciences Jurnal Keuangan dan Akuntansi Terapan (KUAT) Jurnal Sosial dan Sains SINAU : Jurnal Ilmiah Pendidikan dan Pembelajaran Jurnal Pengembangan Pembelajaran Matematika Jurnal Infinity Mathematics Education Journal Journal on Mathematics Education Jurnal Didaktik Matematika
Rina Oktaviyanthi, Rina
Universitas Serang Raya
Religion Humanities Astronomy Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Phet Assisted Trigonometric Worksheet for Students’ Trigonometric Adaptive Thinking Oktaviyanthi, Rina; Sholahudin, Usep
Mosharafa: Jurnal Pendidikan Matematika Vol. 12 No. 2 (2023): April
Publisher : Department of Mathematics Education Program IPI Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31980/mosharafa.v12i2.779

Abstract

Fakta menunjukkan kesulitan dalam belajar geometri di universitas yaitu kesulitan menentukan fungsi Trigonometri untuk sudut negatif atau lebih besar dari 90 derajat, dan kesulitan menerjemahkan beberapa representasi fungsi Trigonometri. Masalah yang melibatkan kemampuan berpikir Trigonometri dapat diselesaikan dengan menampilkan perekayasaan informasi gambar, diagram atau animasi. Salah satu media dengan yang dapat menstimulasi berpikir Trigonometri adalah PhET Simulation. Media digital dapat menunjukkan performa yang lebih baik jika didukung lembar kerja untuk memandu proses pengikatan ilmu pengetahuan. Tujuan penelitian ini adalah bagaimana proses perancangan worksheet yang mengintegrasikan pemanfaatan media interaktif Phet Simulation. Penelitian pengembangan dijadikan sebagai pendekatan penelitian yang meliputi tiga bagian yakni problem and design solution analysis, product specification and development, serta prototype evaluation and limited test. Pengujian validator ahli memiliki indikasi bahwa lembar kerja yang dikembangkan memenuhi standar pengujian ahli untuk digunakan dalam menyelesaikan masalah Trigonometri. Pengujian terbatas pada subjek penelitian menunjukkan instrumen yang diuji memenuhi standar valid dan reliabel. The facts show that the difficulties in learning geometry at university was difficulty to determine Trigonometry functions for negative angles or greater than 90 degrees, and difficulty to translate some representations of Trigonometry functions. Problems involving Trigonometry thinking skills are most likely solved by presenting manipulated images, diagrams and animations. One media to stimulate Trigonometry thinking is PhET Simulation. Additionally, a digital media is believed to improve the performance if it is supported by worksheets to guide the knowledge construction process. Therefore, the purpose of the study was to investigate the designing process of integrating the use of interactive media Phet Simulation. Developmental research was used as the research approach encompassing three sections, namely problem and design solution analysis, product specification and development, and prototype evaluation and limited test. The expert validator tests indicated the worksheet developed met the requirement as a solution in solving Trigonometry problems. Limited test to the research subjects confirmed that the instruments were tested valid and reliable.
Graphing Quadratics Worksheet Performance in Optimizing Mathematical Visual Thinking: A Single Subject Research Giyanti, Giyanti; Oktaviyanthi, Rina
Mosharafa: Jurnal Pendidikan Matematika Vol. 13 No. 2 (2024): April
Publisher : Department of Mathematics Education Program IPI Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31980/mosharafa.v13i2.1470

Abstract

Kurangnya kemampuan berpikir visual matematis pada mahasiswa dapat menghambat pemahaman konsep fungsi kuadrat secara mendalam. Penelitian ini bertujuan untuk mengatasi masalah tersebut dengan mengevaluasi efektivitas worksheet graphing quadratics dalam meningkatkan kemampuan berpikir visual matematis mahasiswa. Metode penelitian yang digunakan adalah Single Subject Research (SSR), yang berfokus pada perubahan performa individu dalam kondisi baseline dan intervensi. Partisipan terdiri dari tiga mahasiswa tingkat pertama program studi pendidikan matematika di Universitas Serang Raya. Data kinerja mahasiswa dikumpulkan melalui tiga sesi pada fase baseline dan lima sesi pada fase intervensi. Teknik analisis data yang digunakan adalah analisis regresi linier untuk mengukur perbedaan signifikan antara fase baseline dan intervensi. Hasil penelitian menunjukkan peningkatan yang signifikan dalam performa setiap subjek selama fase intervensi, dengan adanya peningkatan level, kecenderungan perubahan yang kuat, dan perubahan segera setelah intervensi dimulai. Temuan ini menunjukkan bahwa penggunaan worksheet graphing quadratics efektif dalam mengoptimalkan kemampuan visualisasi matematis mahasiswa. The limited visual mathematical thinking abilities of students can hinder a deep understanding of quadratic functions. This study aims to address this issue by evaluating the effectiveness of graphing quadratics worksheets in enhancing students' visual mathematical thinking. The research employs a Single Subject Research (SSR) method, focusing on individual performance changes across baseline and intervention phases. Three first-year students from the mathematics education program at Universitas Serang Raya participated in the study. Performance data were collected over three sessions in the baseline phase and five sessions in the intervention phase. Linear regression analysis was used to assess significant differences between baseline and intervention phases. The results indicated a significant improvement in each subject's performance during the intervention, with an increase in level, a strong trend, and immediate change upon the intervention’s onset. These findings suggest that graphing quadratics worksheets effectively optimize students' mathematical visualization skills.
Cognitive apprenticeship in vocational students mathematical decision making skills Oktaviyanthi, Rina; Lestari, Indri
Jurnal Pendidikan Vokasi Vol. 13 No. 1 (2023): February
Publisher : ADGVI & Graduate School of Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpv.v13i1.52831

Abstract

Exploring the decision-making abilities of undergraduate students, including students from vocational education backgrounds, is the main priority in the achievement of mathematics learning in general and in Calculus courses particularly. Decision-making processes require cognitive guidance through activities describing in detail the systematic steps of each process. It is implicitly said as part of a cognitive apprenticeship procedure. There are claims that students with a vocational education background can develop their academic and practical potential more through a cognitive apprenticeship model. In addition, using video as visual media learning allows students to sharpen their skills. Therefore, the study aims to explore the distinction in achievement and improvement of mathematical decision-making skills between undergraduate students who learn with a Video-assisted Cognitive Apprenticeship approach (CAV), and they are who receive Cognitive Apprenticeship learning (CA) with conventional learning. A quantitative study with the Static-Group Pretest-Posttest Design was employed as a methodology in the research. Based on the research stage, there are differences in achievement and improvement of student decision-making skills with a review of the type of vocational school between undergraduate students.
Peran Orang Tua dalam Pengenalan Angka di Era Digital Melalui Comic Digital Interaktif Supriani, Yani; Oktaviyanthi, Rina; Suherman, Suherman
Jurnal sosial dan sains Vol. 4 No. 10 (2024): Jurnal Sosial dan Sains
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jurnalsosains.v4i10.19997

Abstract

Latar Belakang: Pengenalan angka pada anak usia dini, khususnya di tingkat TK dan PAUD, merupakan fondasi penting dalam pengembangan kemampuan matematis anak. Namun, masih banyak ditemui siswa yang memiliki pengetahuan terbatas mengenai bilangan dan operasi hitung dasar, yang dapat menghambat pemahaman mereka pada jenjang pendidikan lebih lanjut. Tujuan Penelitian: Penelitian ini bertujuan untuk mengatasi masalah rendahnya pemahaman bilangan pada siswa usia dini dengan mengembangkan metode pengajaran menggunakan media interaktif berbasis teknologi, yakni komik digital. Pelatihan ini ditujukan kepada guru dan wali murid untuk meningkatkan keterampilan mereka dalam mengajarkan angka kepada anak-anak di TK Islam An-Nur, Cilegon. Metode: Penelitian ini menggunakan Participatory Learning Method (PLM), yang menekankan pada keikutsertaan aktif peserta pelatihan dalam setiap tahap, mulai dari perencanaan hingga evaluasi. Pelatihan dilaksanakan dalam bentuk Bimbingan Teknis (Bimtek) yang melibatkan guru dan wali murid. Hasil: Hasil penelitian menunjukkan bahwa penggunaan komik digital interaktif secara signifikan membantu siswa dalam mengenali angka dengan lebih mudah dan menyenangkan. Selain itu, media ini juga menarik minat belajar anak dan memfasilitasi pembelajaran interaktif yang dapat diterapkan oleh guru maupun orang tua. Kesimpulan: Pelatihan ini berhasil memperkuat peran guru dan orang tua dalam mendukung pembelajaran angka di era digital. Penggunaan komik digital interaktif memberikan solusi praktis dan inovatif dalam proses pengajaran angka untuk anak usia dini.
Predicting Students Mathematical Decision Making Using k-Nearest Neighbor Technique Giyanti, Giyanti; Oktaviyanthi, Rina
Al-Khwarizmi : Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam Vol. 12 No. 1 (2024): Al-Khwarizmi : Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam
Publisher : Prodi Pendidikan Matematika FTIK IAIN Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24256/jpmipa.v12i1.3669

Abstract

Abstract:Mathematical decision-making abilities are mathematical information processing through risk evaluation and investigation of various possibilities and perspectives. However, the evaluation of mathematical decision-making abilities is still limited to high, medium, and a low level based on test scores and is not predictive naturally. The purpose of this study is to identify the parameter k in the k-nearest neighbor technique, which serves as the nearest-neighbor value determining the mathematical decision-making abilities of students to be predicted. The process of data exploration to prediction is employed by the data mining approach with the k-Nearest Neighbor method. A total of 65 first-year students taking Calculus I included as research samples. The research results show that a parameter value of k=15 is better at predicting the closeness of the mathematical decision-making with an accuracy of 93.33%, associated with the excellent category. The parameter value representing the closeness of the decision-making abilities level among students serves as a reference for teacher predictions to categorize students and create diversified teaching materials. Abstrak:Kemampuan pengambilan keputusan matematis merupakan pemrosesan informasi secara matematis melalui evaluasi risiko dan penyelidikan berbagai kemungkinan dan sudut pandang. Namun, evaluasi kemampuan pengambilan keputusan matematis masih terbatas pada level tinggi, sedang dan rendah berdasarkan nilai tes, tidak bersifat prediktif. Penelitian ini bertujuan mengidentifikasi nilai parameter k dengan teknik k-nearest neighbor yang berperan sebagai nilai ketetanggaan terdekat dari kemampuan pengambilan keputusan matematis. Proses eksplorasi data hingga prediksi dilakukan menggunakan pendekatan data mining dengan metode k-Nearest Neighbor. Sebanyak 65 mahasiswa tahun pertama yang mengikuti Kalkulus I sebagai sampel penelitian. Hasil penelitian menunjukkan nilai parameter k=15 yang lebih mampu memprediksi kedekatan tingkat kemampuan pengambilan keputusan matematis dengan akurasi 93,33%, termasuk pada kategori excellent. Nilai parameter tersebut menjadi acuan prediksi pengajar untuk mengkategorikan mahasiswa dan membuat diversifikasi bahan ajar.
Identifying key factors influencing mathematical visual thinking among pre-service mathematics teachers Agus, Ria Noviana; Oktaviyanthi, Rina
Indonesian Journal of Educational Development (IJED) Vol. 6 No. 3 (2025): November 2025
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) Universitas PGRI Mahadewa Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59672/ijed.v6i3.4620

Abstract

Mathematical visual thinking is essential for understanding complex mathematical concepts, as it enables learners to interpret and connect visual and symbolic representations. However, many pre-service mathematics teachers struggle to integrate visual representations with algebraic expressions, leading to conceptual misunderstandings. This study aims to identify the key factors influencing mathematical visual thinking among pre-service mathematics teachers. A mixed-methods descriptive study was conducted, involving 150 students for quantitative analysis and 15 selected participants for qualitative interviews. Data were collected through a mathematical visual thinking test, a visual thinking factors questionnaire, semi-structured interviews, and document analysis of students’ mathematical tasks. The results indicate that most students exhibit moderate visual thinking ability (50%), with challenges in linking graphical and algebraic representations. The key influencing factors include teaching approaches (4.3), concept understanding (4.1), motivation (4.0), and technology use (4.2), whereas anxiety plays a lesser role (2.9). Students relying heavily on technological tools tend to improve accuracy but struggle with independent visualization. These findings suggest that instructional strategies should integrate structured visual exercises, emphasize transformation understanding, and balance technological support with manual problem-solving. This study provides new insights into enhancing visual thinking in mathematics and offers pedagogical recommendations for pre-service teacher education.  
The Trigonometric Adaptive Worksheet Performance in Optimizing Trigonometric Thinking of Prospective Mathematics Teacher: Single Subject Research Usep Sholahudin; Rina Oktaviyanthi
Didaktik Matematika Vol 10, No 2 (2023): October 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jdm.v10i2.33216

Abstract

The ability to think in trigonometry supports the understanding of trigonometry concepts, which still pose challenges for first-year university students, including prospective teachers. The Trigonometric Adaptive Worksheet is one of the student worksheets to optimize trigonometric thinking abilities. This research aimed to assess the performance of the Trigonometric Adaptive Worksheet on the trigonometric thinking abilities of prospective mathematics teachers. Quantitative descriptive research with a Single Subject Research method and a basic design of A (baseline) - B (intervention) was employed as the research approach. Three prospective mathematics teachers from three categories of high, moderate, and low mathematical abilities were selected as research subjects. The data related to changes in individual behavior regarding progress in trigonometric thinking abilities were analyzed using within-condition analysis and between-condition analysis procedures. Based on the single-subject data analysis of the three research subjects, it is evident that moderate and low subjects tend to benefit more from implementing the Trigonometric Adaptive Worksheet. These findings have important implications, suggesting adaptive worksheets can enhance individual learning outcomes by tailoring content to individuals' needs. The worksheet adaptability and personalization provide an opportunity to improve trigonometry instruction's effectiveness.
Co-Authors Agus Setyawan Agus, Ria Noviana Artasari, Adika Cahyani, Anggita Salsa Chatarina Umbul Wahyuni Delvianingsih, Nenden Devy Permatasari Erma Perwitasari Eva Safaah Garcia, Mark Lester B Garcia, Mark Lester B. Giyanti Giyanti, Giyanti Harsiti Harsiti Husain, Sharifah Kartini Said Imas Tesia Putri Jarnawi Afgani Dahlan Kadun, Selvi Khotimah Khotimah Kornkanok Lertdechapat Lertdechapat, Kornkanok Lestari, Indri Lestari, Indri Mark Lester B. Garcia Mohammad Kamil Husain Ria Noviana Agus Rosalina, Vidila Suherman, Suherman Supriani, Yani Suryaman Suryaman Tatang Herman, Tatang Tb Ai Munandar Ufi Lutfiah Usep Sholahudin Usep Sholahudin, Usep Wian Azrillia Zahwatuzzukhrufiah