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All Journal MATEMATIKA Statistika Prosiding Seminar Biologi Journal of Education and Learning (EduLearn) Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal S2 Pendidikan Matematika Journal of the Indonesian Mathematical Society AKSIOMA: Jurnal Program Studi Pendidikan Matematika Jurnal Teknologi Informasi dan Ilmu Komputer Journal of Mathematics and Mathematics Education Jurnal Ekonomi & Studi Pembangunan Suska Journal of Mathematics Education Proceedings Education and Language International Conference Indonesian Journal of Applied Statistics Journal of Mathematics and Mathematics Education (JMME) Jurnal Pembelajaran Matematika JTAM (Jurnal Teori dan Aplikasi Matematika) Journal of Education Technology M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Vygotsky: Jurnal Pendidikan Matematika dan Matematika BISECER (Business Economic Entrepreneurship) SOSIOEDUKASI : JURNAL ILMIAH ILMU PENDIDIKAN DAN SOSIAL Southeast Asian Mathematics Education Journal Jurnal Bumigora Information Technology (BITe) Jurnal TIKOMSIN (Teknologi Informasi dan Komunikasi Sinar Nusantara) Budapest International Research and Critics in Linguistics and Education Journal (Birle Journal) Journal of Applied Data Sciences Jurnal Pengabdian kepada Masyarakat Proceeding Biology Education Conference Prosiding Seminar Nasional Teknik Elektro, Sistem Informasi, dan Teknik Informatika (SNESTIK) Industrial Research Workshop and National Seminar Pancaran Pendidikan Prosiding Konferensi Nasional Penelitian Matematika dan Pembelajarannya Jurnal Indonesia Sosial Teknologi JRAMathEdu (Journal of Research and Advances in Mathematics Education) Jurnal Pendidikan MIPA Radiant : Journal of Applied, Social, and Education Studies International Journal of Computing Science and Applied Mathematics-IJCSAM
Sri Subanti
Program Studi Statistika, Universitas Sebelas Maret, Surakarta 57126
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Description of Junior High School Students’ Mathematical Understanding According to Skemp Theory in terms of Rational Personality Types Rachmawati, Intan; Subanti, Sri; Usodo, Budi
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 7, No 2 (2023): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v7i2.13179

Abstract

Mathematical understanding is one of the supporting factors for students' success in mathematics. Skemp divides understanding into two types, namely instrumental understanding and relational understanding. This research purpose was to describe the mathematical understanding of seventh grade D students in solving set problems based on Skemp's theory of understanding in terms of rational personality types. The type of research used was descriptive qualitative. This research was conducted at Junior High School Darul Aman Mataram of 2021/2022 academic year. Selection of subjects using a purposive sampling technique. The subjects in this study were two students with rational personality types. Data were obtained using a mathematical understanding test and interviews. The study's results showed that students with rational personality types tend to have a relational understanding because they can explain reasons or interpret problem-solving procedures according to the set concept correctly. In addition, students are able to understand the purpose of the given set of problems, can apply ideas according to the logic of thinking in solving problems, can write problem solving procedures coherently according to Skemp's theory even though they tend to be brief, can solve mathematical understanding problems accompanied by appropriate answer arguments, can change mathematical sentences in the given problem in the form of words, images, or certain mathematical symbols. Furthermore, this type can achieve all of the indicators of instrumental understanding and can fulfill the six indicators of relational understanding, except for the ability to correlate several set concepts. Based on these results, it is expected that rational personality type students can determine detailed planning in solving problems, and improve understanding of mathematical concepts such as being more careful in the use of solution strategies so that students are accustomed to applying various solution strategies.
LITERATURE REVIEW ON THE DEVELOPMENT OF STUDENT WORKSHEET BASED ON MIKIR STRATEGIES TO IMPROVE NUMERACY ABILITIES Krisni Suhardiyani; Sri Subanti; Budi Usodo
SOSIOEDUKASI Vol 15 No 1 (2026): SOSIOEDUKASI : JURNAL ILMIAH ILMU PENDIDIKAN DAN SOSIAL
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan Universaitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/sosioedukasi.v15i1.7140

Abstract

Mathematical numeracy skills are essential competencies needed by students to understand and solve contextual problems in everyday life. However, various assessment results indicate that the numeracy skills of junior high school students in Indonesia are still relatively low, necessitating innovation in mathematics learning. One effort that can be done is through the development of Student Worksheets (SW) that are systematically designed and oriented towards students' thinking processes. This article aims to systematically review the research literature related to SW development, mathematical numeracy skills, and the potential integration of the MIKiR (Experience, Interaction, Communication, and Reflection) strategy in junior high school mathematics learning. The research method used is a systematic literature review of journal articles. The results of the study indicate that contextual SW can improve students' numeracy skills, but most studies have not integrated learning strategies explicitly into the SW design. This study confirms a research gap related to the development of SW based on the MIKiR strategy to improve junior high school students' mathematical numeracy skills
Model Simulation of Continuous Time Markov Chain Susceptible Infected Recovered-Bacterial Population for Cholera Disease Aulia Maulani Syifa Nur Hidayati; Respatiwulan Respatiwulan; Sri Subanti
Indonesian Journal of Applied Statistics Vol 6, No 1 (2023)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijas.v6i1.71801

Abstract

Epidemic is an outbreak of an infectious disease rapidly in a population at a certain place and time. Epidemic models are used to explains the spread pattern of disease. The continuous time Markov chain susceptible infected recovered-bacterial population in the aquatic reservoir (CTMC SIR-B) model is a stochastic model, which considers the effect of bacterial population. The human population are classified into 3 groups. There are susceptible, infected, and recovered groups. Then, there are bacterial population which can infectious the cholera disease to human. CTMC SIR-B model considers treatment and water sanitation parameters. The spread of cholera disease can be modeled as CTMC SIR-B. Cholera is an acute intestinal infectious disease caused by the bacterium Vibrio cholerae. Cholera can be transmitted through the human digestive system. The symptoms of cholera disease are diarrhea, vomiting, and dehydration. The dehydration if not handled properly, may cause death. The aims of this research are to build and simulate the CTMC SIR-B model for cholera disease. The result of the model simulation shows that there is no significant difference between various values of treatment and water sanitation parameters. The pattern of the cholera disease spread describes that the transmission of cholera can occur from human to human even though there is no population of bacteria in the aquatic reservoir.Keywords: cholera; ctmc sir-b; epidemic model; stochastic. 
Combined Model of Markov Switching and Asymmetry of Generalized Seasonal Autoregressive Moving Average Conditional Heteroscedasticity for Early Detection of Financial Crisis in Hong Kong Sugiyanto Sugiyanto; Sri Subanti; Isnandar Slamet; Etik Zukhronah; Irwan Susanto; Winita Sulandari; Nabila Churin Aprilia
(IJCSAM) International Journal of Computing Science and Applied Mathematics Vol. 10 No. 2 (2024)
Publisher : LPPM Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24775401.ijcsam.v10i2.4541

Abstract

The financial crisis in Hong Kong occurred in 1997 and 2008. To prevent a crisis or reduce the impact of a crisis, action is needed through early detection of the crisis using export indicator. The combination of Markov Switching and Asymmetric Generalized Seasonal Autoregressive Moving Average Conditional Heteroscedasticity (MS-AGSARMACH) models explains the crisis well. The results show that the MSAGSARMACH(2,1,1) model can explain past and future crises well.
Forecasting of Indonesian Crude Prices using ARIMA and Hybrid TSR-ARIMA Etik Zukhronah; Winita Sulandari; Sri Subanti; Isnandar Slamet; Sugiyanto Sugiyanto; Irwan Susanto
(IJCSAM) International Journal of Computing Science and Applied Mathematics Vol. 10 No. 2 (2024)
Publisher : LPPM Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24775401.ijcsam.v10i2.4563

Abstract

Forecasting of Indonesian crude prices (ICP) is crucial for the government and policymakers. It helps them develop appropriate economic policies, budget allocations, and energy strategies. Forecasting methods that can be used are Time Series Regression (TSR) and Autoregressive Integrated Moving Average (ARIMA). This study aims to forecast ICP using ARIMA and hybrid TSR-ARIMA models. The data used in this study is the ICP per month, from January 2017 to November 2022. The data is divided into two groups, the data from January 2017 to December 2020 is used as training data, and the data from January 2021 to November 2022 is used as testing data. The MAPE values for the testing data of the TSR-ARIMA(2,1,0) and ARIMA(2,1,0) models are 8.24% and 17.37% respectively. Based on this, it can be concluded that the TSR-ARIMA(2,1,0) model is better than the ARIMA(2,1,0) model for forecasting ICP.
Early Detection Of Currency Crisis In Indonesia Based On Jci Indicator Using A Combination Of Volatility And Markov Switching Models Berlyana Ayu Prasasti; Sugiyanto Sugiyanto; Sri Subanti
Jurnal Indonesia Sosial Teknologi Vol. 4 No. 3 (2023): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v4i3.608

Abstract

Currency crises have occurred in Indonesia in 1997-1998 and 2008, causing significant losses both in terms of economy and social life. Therefore, a system is needed that can detect currency crises to create economic and currency stability. Crises can be detected through economic indicators such as Indonesia Stock Exchange Composite Index (IDX Composite) or Jakarta Composite Index (JCI). This study aims to determine the appropriate model and to predict the currency crisis in Indonesia from November 2022 to October 2023 based on the JCI indicator. The study begins by forming an AR model, then a volatility model in the form of an ARCH model, and finally a combined volatility model and Markov switching two-state model. This combined model is then used to form a smoothed probability that can detect crises. The results of the study indicate that the MS-ARCH(2,1) model is the appropriate model, and from the detection results, it is found that Indonesia will not experience a currency crisis from November 2022 to October 2023.
Mathventure SPLDV : Developing an Educational Math Game to Improve Students’ Critical Thinking Skills Permatasari, Dinda Agnes; Subanti, Sri; Pramudya, Ikrar
Vygotsky: Jurnal Pendidikan Matematika dan Matematika Vol. 7 No. 2 (2025): Vygotsky: Jurnal Pendidikan Matematika dan Matematika
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/voj.v7i2.1243

Abstract

This study aims to develop and evaluate Mathventure SPLDV, an Android-based educational game to enhance eighth-grade students’ critical thinking on Systems of Linear Equations in Two Variables. The study used the ADDIE model in a Research and Development (R&D) approach. Data were collected using questionnaires and essay tests, and analyzed using a paired samples t-test after meeting normality and homogeneity assumptions. Validation from media and material experts showed high validity (87.78% and 93.63%), while student and teacher responses showed high practicality (89.26% and 96%). A significant improvement in critical thinking was found (t = 2.638 > 1.6698), indicating H₀ rejection. Based on the results, Mathventure SPLDV is recommended for classroom use as an effective tool to support students’ critical thinking
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Aziz Abdul Aziz Abdul Aziz Hidayat Achmad Nurrofiq Achmad Nurrofiq Adi Wicaksono, Nanda Adigama Tri Nugraha Aflich Yusnita Fitrianna Aflich Yusnita Fitrianna Agus Supriyanto Ahmad Abdul Mutholib Aji Susanto Amalia Zulvia Widyaningrum Amanda, Nabila Tri Ambarawati, Mika Amiratih Siti Aisyah Andhika, Niken Dwi Anggraira, Attilah Suci Annisa Swastika Annur, M. Firman Anwar Ardani Aprilia, Nabila Churin Arianto, Febri Arif Rahman Hakim Arif Rahman Hakim Arif Rahman Hakim Arif Rahman Hakim Arifa Apriliana Arifa Apriliana, Arifa Ariska Yuliana Putri Ariska Yuliana Putri Arsita Anggraeni Pramesti Arum Dwi Rahmawati Dwi Rahmawati, Arum Dwi Rahmawati Dwi Assyifa Lala Pratiwi Hamid Astuti, Arinda Tri Astuti, Indra Puji Atika Amalia Attilah Suci Anggraira Aulia Maulani Syifa Nur Hidayati Aulia Rizki Destarani Ayu Rahmawati Bastian Al Ravisi Berlyana Ayu Prasasti Brilliyanti, Fanny Brilliyanti, Fanny Budi Santosa Budi Santosa Budi Santosa Budi Usodo Budi Usodo Budi Usodo Budi Usodo Budi Usodo Budi Usodo Budi Usodo Budi Usodo Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono Budiyono, Budiyono Budiyono, Budiyono Danar Supriadi Desi Tri Utami, Desi Tri Diana Tri Purnamasari Dini Yuniarti Dwi Ambarwati, Dwi Dwi Retnowati Dwi Retnowati Dyah Auliya Agustina Endang Widiyastuti Era Hervilia Etika, Erdyna Dwi Exacta, Annisa Prima Fajar Suryatama Farida Nurhasanah Fhadilla, Nahdatul Fitri Apriyani Pratiwi, Fitri Apriyani Fitri Era Sugesti Fitria, Camelina Fitriana Anggar Kusuma Fitriana, Laila Getut Pramesti Giant Aprisetyani Giant Aprisetyani H Hartatik, H Hendriyanto, Agus Hervilia, Era Husna Afanyn Khoirunissa Iffah, Rona Dhiya Layli Ikrar Pramudya Ikrar Pramudya, Ikrar Imam Sujadi Imam Sujadi Imam Sujadi Imam Sujadi Indra Raditya , Dionisius Intan Novia Sari Intan Novia Sari Irwan Susanto Isnaini, Bayutama Isnandar Slamet Isnandar Slamet Isnandar Slamet Isnandar Slamet, Isnandar Iwan Kurnianto Kadar, Jimmy Abdel Karina Pramitasari Karina Pramitasari, Karina Kartikaningtyas, Nafiqoh Elsa Katherine Her Pratiwi Khafittulloh Viqriah Khafittulloh Viqriah, Khafittulloh Khoiriyah, Nor Krisni Suhardiyani Kumarahadi, Brigitta Melati Kurniasih, Rini Kurniati, Edy Dwi Lestari, Fajar Lina Muawanah, Lina Mahmudah Titi Muanifah Mahmudah Titi Muanifah Mahmudati, Rina Maratu Shalikhah Maratu Shalikhah, Maratu Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana Mardiyana, Mardiyana Mardiyana, Mardiyana Marfuah, Ismiyati Mida Nurani Mika Ambarawati Mohamad Nur Fauzi Muhammad Bayu Nirwana Muhammad Wildan Fadilah Mulyadi Mulyadi Mulyadi Mulyadi Nabila Churin Aprilia Nais Qonita Salsabila Ningsih, Maya Kristina Nirwana, Muhammad Bayu Nopiana, Medi Nor Khoiriyah Novi Dya Meylasari Nugraha, Titis Jati Nugroho, Purwo Setiyo Nuraini, Latifah Nurudin, M. Pardede, Hilman Ferdinandus Permatasari, Dinda Agnes Prabowo, Haniftia Haqqiendini Pramesti, Arsita Anggraeni Pratiwi, Fitri Apriyani pratiwi, hasih Proborini, Ellen Purna Bayu Nugroho Purnamasari, Anita Pusaka, Semerdanta Putra Adi Wibowo Putra Adi Wibowo Rachmawati, Intan Rahmita Ika Sari Raodatul Jannah Raodatul Jannah Rara Sugiarti Ratih Kusumaningrum Ratih Kusumaningrum Reka Pramukti Reka Pramukti, Reka Respati wulan Respatiwulan Respatiwulan Retno Anggraheni Ria Wahyu Wijayanti Rina Mahmudati Riyadi Riyadi Riyadi Riyadi Riyanto, Nandyar Fisthi Riyanto, Nandyar Fisthi Rizky Wahyudi Sandhy Prasetyo Tito Kurniawan Sandhy Prasetyo Tito Kurniawan, Sandhy Prasetyo Satrio Wicaksono Sudarman Savitri, Maria Endah Savitri, Maria Endah Septiana Wijayanti Setiaputra, Felix Indra Sri Adiningsih Sri Sulistijowati Handajani Sugesti, Fitri Era Sugianto Sugianto Sugiyanto - Sugiyanto Sugiyanto Sugiyanto Sugiyanto Sugiyanto Sugiyanto Sugiyanto, Sugiyanto Sujadi, Imam Sujadi, Imam Sujadi, Imam Sulandari, Winita Sumantri, Astri Wiliastri Susilotomoa, Dhestahendra Citra Titik Yuniarti Triyazulfa, Azkiya Umi Fadlilah, Umi Umi Supraptinah Umi Supraptinah, Umi Veronica Sri Wigiyanti Veronica Sri Wigiyanti Very Hendra Saputra Virlina Zuhanisani Wahyuni, Fina Tri Wahyuni, Fina Tri Wahyuningtyas, Widyana Wardani, Endang Purwati Wardani, Endang Purwati Widyana Wahyuningtyas Wihasti Imas Priyandani Wihasti Imas Priyandani, Wihasti Imas Winita Sulandari Winita Sulandari Winita Sulandari Winita Sulandari Wulandari, Lina Yadi Ardiawan Yadi Ardiawan Yudho Yudhanto Yudho Yudhanto Yudho Yudhanto, Yudho Yuliana Susanti Yuliana Susanti, Yuliana Yuniarti, Titik Yusnita Rahmawati Yusnita Rahmawati Zainal Arifin Zuhanisani, Virlina Zuhdha Basofi Nugroho Zuhdha Basofi Nugroho, Zuhdha Basofi Zukhronah, Etik