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All Journal SAINSMAT Jurnal Statistika Universitas Muhammadiyah Semarang Jurnal Pendidikan Matematika RAFA Jurnal Edukasi Matematika dan Sains AKSIOMA Jurnal Penelitian Pendidikan IPA (JPPIPA) EnviroScienteae BAREKENG: Jurnal Ilmu Matematika dan Terapan Jurnal GEOSAPTA Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam MAJAMATH: Jurnal Matematika dan Pendidikan Matematika J SIG (Jurnal Sains Informasi Geografi) FIBONACCI: Jurnal Pendidikan Matematika dan Matematika MES: Journal of Mathematics Education and Science (JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING PHI: Jurnal Pendidikan Matematika MATHEMA: JURNAL PENDIDIKAN MATEMATIKA ESTIMASI: Journal of Statistics and Its Application Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Jambura Journal of Mathematics Education JAMBURA JOURNAL OF PROBABILITY AND STATISTICS Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Journal of Science and Technology Jurnal Kolaboratif Sains Research in the Mathematical and Natural Sciences Research Review: Jurnal Ilmiah Multidisiplin Indonesian Research Journal on Education Innovative: Journal Of Social Science Research Madani: Multidisciplinary Scientific Journal Lemma: Letters of Mathematics Education Journal of Mathematics, Computation and Statistics (JMATHCOS) Media Pendidikan Matematika SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam
Dewi Rahmawaty Isa
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Penerapan Model Pembelajaran Osborn Untuk Meningkatkan Hasil Belajar Siswa Dalam Materi Himpunan Pada Siswa Kelas VII MTS Negeri 2 Bolaang Mongondow Utara Iman, Rivo Syahputra; Badu, Syamsu Qamar; Isa, Dewi Rahmawaty
Madani: Jurnal Ilmiah Multidisiplin Vol 2, No 6 (2024): Madani, Vol 2, No. 6 2024
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.11596300

Abstract

Inappropriate teaching models can hinder the effectiveness of learning and negatively impact students' learning outcomes. Conversely, the implementation of suitable teaching models can provide a better learning experience and support the achievement of learning objectives. The Osborn teaching model is one appropriate approach to enhancing students' learning outcomes, especially in the topic of sets. This model emphasizes active student participation in generating ideas and problem-solving through brainstorming techniques. By granting students the freedom to express themselves and collaborate within groups, the Osborn model helps increase student engagement in learning and enrich their understanding of the subject matter. Therefore, through the implementation of the Osborn teaching model, it is expected that students' learning outcomes in the topic of sets will significantly improve. Research results confirm that the application of the Osborn model has a significant positive impact on students' learning outcomes in the subject of sets. There was a consistent improvement from cycle I to cycle II, where average learning outcomes increased significantly. This improvement was observed in the affective, psychomotor, and cognitive domains, with percentages increasing from the previous cycle. Evaluations conducted in each cycle demonstrate the effectiveness of the Osborn model in deepening students' understanding of set concepts. The final results indicate that the average learning outcomes of students have met the minimum success indicator of 80%, illustrating that the implementation of the Osborn model has successfully enhanced overall student learning achievements in understanding the set material.
Student learning outcomes with the application of the team game tournament learning model in review of student motivation in class XI D Une, Putri Mutia; Yahya, Lailany; Isa, Dewi Rahmawaty
Jurnal Pendidikan Matematika RAFA Vol 10 No 1 (2024): Jurnal Pendidikan Matematika RAFA
Publisher : Program Studi Pendidikan Matematika, Universitas Islam Negeri Raden Fatah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/7vkj9877

Abstract

This study aims to know whether or not there is an influence between the learning outcomes of students who are taught using the TGT cooperative learning model and that of using direct learning in terms of student motivation. This is a quasi experimental study using Treatment By Level design which is carried out in class XI SMA in Wonosari in the even semester of the 2022/2023 academic year. The study samples are the students in class XI, totalling 71 students. The data are obtained from instruments in the form of   multiple choice and questionnaires. Each is used to test mathematics learning outcomes and student motivation. Data analysis uses a two-way analysis of variance and a    Scheffe test. The findings show that: 1) The learning outcomes of students who are taught using the TGT learning model are higher than that of using the direct learning model. This content evidenced results obtained Fcount = 12.701 and Ftable = 3.98, so Fcount  > Ftable  causes the (H1) to be accepted. 2) There is interaction influence between the learning model and students' motivation on students' mathematics learning outcomes. This content evidenced results obtained Fcount = 5.1913 and Ftable = 3.98, so Fcount > Ftable causes the (H1 ) to be accepted. 3) The learning outcomes of students with high motivation who are taught using the TGT learning model are higher than that of using direct learning model. This content evidenced results obtained Fcount = 16.472 and Ftable   = 3.74, so Fcount  >   Ftable  causes the (H1 ) to be accepted. 4) The learning outcomes of students with low motivation who are taught using the TGT learning model are lower than that of using direct learning model. This content evidenced results obtained Fcount = 1.420 and Ftable = 3.74, so Fcount < Ftable causes the (H0 ) to be accepted.
Meningkatkan Hasil Belajar Matematika Kelas XI Materi Garis Singgung Lingkaran melalui Penggunaan Media Papan Lingkaran Nur, Sholihin P.; Badu, Syamsu Qamar; Isa, Dewi Rahmawaty
Jambura Journal of Mathematics Education Vol 5, No 2: September 2024
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jmathedu.v5i2.26481

Abstract

Mathematics is a foundational subject essential for the advancement of technology and various scientific disciplines. This study aims to enhance the mathematics learning outcomes of class XI-C students at SMA Muhammadiyah Batudaa through the use of circle board learning media. Conducted as classroom action research during the 2023/2024 academic year, the study involved 28 students from class XI-C. Data collection methods included tests and observations, utilizing essay tests and observation sheets to assess teacher and student activities. The findings reveal that implementing circle board learning media significantly improved student learning outcomes on circle tangent material. Observations showed notable increases in teacher activity: from 70% to 95% in preliminary activities, 69,4% to 97,2% in core activities, and 68,7% to 93,7% in closing activities. Similarly, student activity observations improved from 75% to 90% in preliminary activities, 67,8% to 92,8% in core activities, and 58,3% to 91,6% in closing activities. These results demonstrate that the use of circle board learning media effectively enhances students' mathematics learning outcomes.
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERKARAKTER REALISTIC MATHEMATIC EDUCATION PADA MATERI SISTEM PERSAMAAN LINEAR DUA VARIABEL KELAS VIII DI SMP NEGERI 3 SUWAWA Nurma, Nurhayati Hasim; Usman, Kartin; Isa, Dewi Rahmawaty
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 6 No. 1 (2025): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v6i1.923

Abstract

The purpose of this study was to produce valid and practical student worksheets. This research was developed through the 4-D development model updated to 3-D define, design, and development.The results of the development obtained a student worksheet with realistic mathematic education characters on the material of a system of linear equations of two variables declared valid and feasible field trials based on the assessment of material experts and design experts. In expert validation, the product received a score of 85.18% from material experts and a score of 88.86% from media experts. In the assessment test to the teacher and 98.21% of the trial to students 96.47%. The students' worksheet through this trial received a very good response with very practical criteria and showed the interest of students in using LKPD during learning.
Application of Statistical Quality Control and Failure Mode and Effect Analysis to Improve Panada Tore Quality at PT. Cita Rasa Pagimana Kudo, Syafri Yandi; Isa, Dewi Rahmawaty; Payu, Muhammad Rezky Friesta
Journal of Mathematics, Computations and Statistics Vol. 8 No. 1 (2025): Volume 08 Nomor 01 (April 2025)
Publisher : Jurusan Matematika FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/jmathcos.v8i1.6708

Abstract

The manufacturing industry in Banggai Regency, Indonesia, is growing rapidly and is the main sector supporting PDRB. PT Cita Rasa Pagimana, a producer of Pagimana's signature panada tore, faces product quality problems such as charring and crumbling despite clear production standards, causing losses due to the large number of defective products. This study aims to implement a combination of Statistical Quality Control (SQC) method with Seven Tools and Failure Mode and Effect Analysis (FMEA) to identify the causes and resolve panada tore production defects. The results showed 6.680 defective products out of 189.590 products in December 2024, with charred defects accounting for 64% (4.393 products) and crumbled defects 36% (2.287 products). Based on FMEA, the five main causes with the highest RPN are: inconsistent frying technique, absence of oil thermometer, improper dosage of raw materials, overheating room temperature, and rough handling of dough. Recommendations for improvement include training on frying techniques, providing an oil temperature thermometer, adjusting the dosage of raw materials, adjusting the room temperature, and periodic training to improve employees' understanding of the production process, which is expected to reduce defects and improve product quality.
MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA MENGGUNAKAN MODEL PEMBELAJARAN DISCOVERY LEARNING MATERI SPLDV DI KELAS VIII-1 Khairiah, Laelatul; Usman, Kartin; Isa, Dewi Rahmawaty
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 6 No. 1 (2025): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v6i1.933

Abstract

The purpose of this study was to determine whether using the discovery learning model can improve mathematical problem-solving skills on SPLDV material. In the 2024/2025 school year, class action research was carried out at MTs. Nurul Bahri Kabila Bone. The research subjects were VIII-1 class students with a total of 18 people. The instruments used are teacher and student activity sheets and math problem solving ability test questions. This research was conducted in two cycles with four elements namely planning, action, observation, and reflection. The learning results of cycle 1 showed the analysis of teaching teacher activities of 78.94%, the results of the analysis of student activities of 70.59%, and the results of the analysis of mathematical problem-solving ability of 69.09%. The data has not met the specified success indicator of 80%. In cycle 2, the results of the analysis of teaching teacher activities were 94.73%, the analysis of student activities reached 91.17%, and the results of the analysis of students' ability to solve math problems were 94.73%. So obtained cycle 2 has reached the specified success indicator of 80%. The results showed that students of class VIII-1 MTs. Nurul Bahri Kabila Bone were able to solve math problems better using the discovery learning model, which gradually increased in each cycle.
The Implementation of Polya’s Strategy with Lumio Media to Enhance Students’ Mathematical Problem-Solving Skills on Junior High School Hanifa; Hulukati, Evi P.; Isa, Dewi Rahmawaty
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol. 8 No. 2 (2025): VOLUME 8 NUMBER 2, JUNE 2025
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jiml.v8i2.28055

Abstract

Mathematics is a fundamental discipline that plays an important role in developing students' logical, analytical, and systematic thinking skills. However, many students still struggle with solving non-routine mathematical problems due to a reliance on memorization and teacher-centered learning. This study aims to improve students’ mathematical problem-solving ability, especially in probability, through the implementation of Polya’s problem-solving steps assisted by Lumio interactive media. This classroom action research employed the Kemmis and McTaggart model, consisting of planning, action, observation, and reflection stages conducted over two cycles. The research subjects were 12 eighth-grade students from SMP Muhammadiyah Kwandang. Data were collected through tests and observation sheets, then analyzed both quantitatively and qualitatively. The instruments included essay tests based on probability story problems and validated observation sheets for teacher and student activities. The results showed a significant improvement in students’ problem-solving skills. The average score increased from 70.05% in the first cycle to 83.59% in the second cycle. The proportion of students achieving mastery also rose from 33% to 91.7%. Learning activities became more interactive and student-centered. It is concluded that integrating Polya’s strategy and Lumio media is effective in enhancing students’ mathematical problem-solving skills and active learning engagement.
A MODEL ARCH(1) DAN GARCH(1,1) PADA PERAMALAN HARGA SAHAM PT. COWELL DEVELOPMENT Tbk. Bilondatu, Rosna Ningsih; Nurwan, Nurwan; Isa, Dewi Rahmawaty
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 13 No 1 (2019): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (200.762 KB) | DOI: 10.30598/barekengvol13iss1pp009-018ar676

Abstract

Penelitian ini memfokuskan pada peramalan harga saham PT. Cowell Development Tbk. menggunakan data pada Januari 2013 sampai Desember 2016. Hasil analisis diperoleh model terbaik adalah model ARIMA(2,1,12). Hasil pengujian asumsi residual white noise menggunakan uji Ljung-Box menunjukkan bahwa model ARIMA(2,1,12) merupakan residual white noise. Hasil uji ARCH-LM menunjukkan data mengandung efek heteroskedastisitas atau unsur ARCH. Model yang diajukan dalam penelitian ini adalah ARCH(1) dan GARCH(1,1). Nilai AIC dan BIC terkecil dari dua model ini adalah ARCH(1). Model ARIMA(2,1,12) dengan residual ARCH(1) merupakan model terbaik untuk meramalkan saham PT. Cowel Development Tbk. Penerapan model ARCH(1) untuk meramalkan harga saham PT. Cowel Development Tbk selama 10 hari periode 2013-2016, menunjukkan bahwa peramalan sudah mendekati data faktual dengan nilai MAPE sebesar 0,043%. Hal ini memberikan indikasi hasil peramalan sudah mendekati data faktual.
ROBUST LEAST MEDIAN OF SQUARE MODELLING USING SEEMINGLY UNRELATED REGRESSION WITH GENERALIZED LEAST SQUARE ON PANEL DATA FOR TUBERCULOSIS CASES Adityaningrum, Amanda; Resmawan, Resmawan; Brahim, Annisa Maharani; Isa, Dewi Rahmawaty; Nashar, La Ode; Asriadi, Asriadi
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 18 No 4 (2024): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol18iss4pp2293-2306

Abstract

Tuberculosis, primarily affecting the lungs and other organs, was the leading cause of death worldwide before the COVID-19 pandemic and continues to be a significant health concern. This research examined tuberculosis (TB) using a panel dataset. As a consequence, the datasets may contain outliers and contemporaneous correlations. A Robust Least Median of Square (LMS) model was developed in this research by combining Seemingly Unrelated Regression (SUR) with Generalized Least Square (GLS) on panel data to provide an analysis overview to overcome outliers and contemporaneous correlations. Based on secondary data obtained from the Central Bureau of Statistics of the Gorontalo Province and the Ministry of Health of the Gorontalo Province, this research examines TB cases between 2017 and 2021. The Chow test result suggests that CEM is the most appropriate model for analyzing panel data for TB cases in Gorontalo Province between 2017 and 2021. Due to the presence of outliers and influential observations in the data, robust LMS is employed. Furthermore, there is a problem of contemporaneous correlation in this research. Each regency or city can mitigate this problem by implementing robust LMS using SUR with GLS.
Analisis Kemandirian Belajar terhadap Prestasi Belajar Peserta Didik SMP Negeri 14 Kota Gorontalo Kadir, Ervina; Majid, Majid; Isa, Dewi Rahmawaty
Indonesian Research Journal on Education Vol. 5 No. 2 (2025): Irje 2025
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/irje.v5i2.2355

Abstract

Tujuan penelitian ini untuk mengetahui adanya hubungan kemandirian belajar siswa terhadap prestasi belajar matematika. Populasi dalam penelitian ini yaitu siswa kelas VII SMP Negeri 14 Kota Gorontalo tahun ajaran 2023/2024. Pengambilan sampel menggunakan simple random sampling. Instrumen penelitian terdiri dari angket kemandirian belajar siswa dan prestasi belajar matematika menggunakan teknik tes obyektif. Metode penelitian menggunakan metode survei dengan pendekatan korelasional. Berdasarkan hasil analisis data diperoleh nilai koefisien korelasi antara kemandirian belajar dengan prestasi belajar matematika sebesar 0,614 yang berarti nilai koefisien antara kedua variabel tersebut tinggi. Diperoleh koefisien determinasi sebesar 37,7% yang artinya varians nilai prestasi belajar matematika yang dicapai siswa sebesar 37,7% ditentukan oleh kemandirian belajarnya. Dengan melihat nilai thitung yang diperoleh adalah 5,74 dan nilai ttabel untuk taraf signifikan 0,05 yaitu 2,04, maka dapat diketahui adanya korelasi hubungan antara kedua variabel yaitu kemandirian belajar (X) dengan prestasi belajar matematika (Y) signifikan karena thitung lebih besar dari nilai ttabel, artinya ada korelasi positif antara kemandirian belajar dengan prestasi belajar matematika. Hal ini menujukan semakin tinggi tingkat kemandirian belajar maka semakin tinggi pula prestasi belajar matematika yang dapat dicapai.
Co-Authors Abdul Wahab Abdullah Agusyarif Rezka Nuha Alvia Dita Amanda Adityaningrum Arpina Sauwera Asriadi Asriadi Asriadi Bertu Rianto Takaendengan Bilondatu, Rosna Ningsih Brahim, Annisa Maharani Bukoting, Nitrawati D Une, Putri Mutia Djahara A. Nusi Djihad Wungguli Djikilo, Fadila A Elan Husaini Evi Hulukati Fakhira Modeong Friansyah Gani Hanifa Hasan S. Panigoro Hendro Budi Santoso Hulukati, Evi P. Hutagalung, Ronal Iman, Rivo Syahputra Ismail Djakaria Isran K Hasan Isran K. Hasan Ivan Taslim Jufrin Jufrin Kadir, Ervina Kartin Usman Khairiah, Laelatul Khairun IT. Aluy Kudo, Syafri Yandi La Ode Nashar Lailany Yahya Lamaka, Rizky Amalia Y LIHAWA, SRIRAPI H Majid Majid Majid, Majid Meldawati Moh. Wahyu Warolemba Moh. Wahyu Warolemba Mohamad Taufik Hamani Mootalu, Nurnaningsi Muhammad Rezky Friesta Payu Nisky Imansyah Yahya Novianita Achmad Nur Fajriani Podungge Nur, Sholihin P. Nurma, Nurhayati Hasim Nursiya Bito Nurwan Nurwan Nurwan, Nurwan Olvi Muliyani Kudji Permana, Aang Panji Perry Zakaria Putri Yanti Mamonto Putri, Dewi Tarisa Rahasia, Zulaiha Rahasia, Zulaiha RAHMAWATY AHMAD Rahmi, Emli Resmawan Resmawan Restika Oktavia Muliling Rizky Amalia Y Lamaka Ronal Hutagalung Rosiana Jupri Salmun K. Nasib Siti Nurmardia Abdussamad Siti Zakiah Sofyan Nuna Sri Lestari Mahmud Suaib, Angki Sumarno Ismail Sunarty Suly Eraku Suparman M Ismail Syamsu Qomar Badu Tedy Machmud Usman, Rahmat Setiawan Usman, Rina Nandrawati Usman, Sri Adiningsi B. Winni A. Pakaya Yamin Ismail Yulinar Rahman