Articles
239 Documents
<![CDATA[The Effect of Talking Stick Learning Model Assisted by Question Card Media on Junior High School Students' Mathematical Problem-Solving Ability ]]>
<![CDATA[Indah Pertiwi]]>;
<![CDATA[Shafa Nurul Izzah]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 9 No. 2 (2025) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v9i2.6962
<![CDATA[This study investigated the effectiveness of the Talking Stick learning model assisted by Question Card media in enhancing junior high school students’ mathematical problem-solving abilities. A quantitative approach with a quasi-experimental design was employed, involving 63 students divided into an experimental and a control group. Data was collected through pretests and posttests, supported by interviews and documentation. The data were analyzed using an independent-samples t-test and a one sample t-test with SPSS. The results indicated a significant difference in mathematical problem-solving abilities between students taught using the Talking Stick Learning Model assisted by Question Cards and those taught using conventional methods. Furthermore, the mean posttest score of students in the experimental group (79.57) significantly exceeded the Minimum Completion Criteria (KKM) of 70. These findings suggest that the Talking Stick learning model assisted by Question Card media is effective in improving students’ mathematical problem-solving abilities.]]>
<![CDATA[Pola Transformasi Aksi, Proses, Objek, dan Skema Mahasiswa dalam Memecahkan Masalah Limit Ditinjau dari Gaya Kognitif ]]>
<![CDATA[Ayu Aristika]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 9 No. 2 (2025) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v9i2.6985
<![CDATA[This study aims to describe the transformation patterns of Action–Process–Object–Schema (APOS) in students with Field Dependent (FD), Field Neutral (FN), and Field Independent (FI) cognitive styles when solving limit problems. The central issue addressed in this research is the low level of conceptual understanding of limits among students. The study employs an exploratory qualitative approach with a collective case study design. The research subjects consist of nine mathematics education students selected based on the results of a cognitive-style assessment. Data were collected through APOS-based problem-solving tasks, observations of students’ thinking processes, and semi-structured in-depth interviews. The analysis reveals that FD students tend to remain at the action–process stages, FN students reach the process–object stages, while FI students construct conceptual understanding up to the object–schema stages. These findings indicate that cognitive style influences the depth and flexibility of students’ understanding of the limit concept. Theoretically, this study extends the application of APOS theory by incorporating cognitive style as a mediating factor. Practically, the results recommend implementing calculus learning strategies that are adaptive to students’ cognitive styles to strengthen conceptual transformation processes in advanced mathematics learning.]]>
<![CDATA[Kemampuan Literasi Matematis Siswa dalam Menyelesaikan Soal Sistem Persamaan Linear Satu Variabel Konteks Parkir Kendaraan ]]>
<![CDATA[Nazwa Khairunnisa Maharani]]>;
<![CDATA[Feri Tiona Pasaribu]]>;
<![CDATA[Syamsir Sainuddin]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 9 No. 2 (2025) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v9i2.7120
<![CDATA[Several previous studies have widely discussed students’ mathematical literacy; however, research that specifically analyzes junior high school students’ mathematical literacy in the topic of Linear Equations in One Variable through contextual problems remains limited. Therefore, this study aims to describe the mathematical literacy abilities of junior high school students in solving contextual problems related to the System of Linear Equations in One Variable. This study employed a qualitative research method involving 33 eighth-grade students of class VIII-I at SMP Negeri 6 Kota Jambi with diverse ability levels. The research instruments consisted of contextual essay tests, interviews, and documentation of students’ written responses. The test items were validated by experts and designed to reflect real-life situations. The results indicate that students’ mathematical literacy skills are generally low, with the majority of students classified in the low category. Students experienced difficulties in understanding information presented in the problems, formulating mathematical models, and interpreting as well as concluding the solutions. Analysis based on mathematical literacy indicators shows that only a small proportion of students were able to fulfill all three indicators comprehensively. These findings suggest that students have not yet met the demands of solving contextual problems mathematically. The results of this study may serve as a basis for developing more contextual and applicative mathematics literacy–based learning to improve the quality of mathematics education at the junior high school level.]]>
<![CDATA[Pemodelan Saham Sektor Energi Menggunakan Non-Homogeneous Markov Switching Autoregressive (NHMS-AR) dengan Probabilitas Transisi Non-Homogeneous ]]>
<![CDATA[Adam Fahmi Fandisyah]]>;
<![CDATA[Nur Iriawan]]>;
<![CDATA[Kartika Fithriasari]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 9 No. 2 (2025) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v9i2.7159
<![CDATA[The movement of energy sector stock returns is dynamic and influenced by external factors that cause changes in market conditions over time. These characteristics indicate the existence of regime shifts that cannot be optimally modeled using conventional linear time series. Therefore, this study aims to model energy sector stock returns in Indonesia using the Non-Homogeneous Markov Switching Autoregressive (NHMS-AR) approach with a focus on the transition probability between regimes influenced by exogenous variables. The data used are monthly logarithmic returns of PT Perusahaan Gas Negara Tbk (PGAS), PT Adaro Energy Indonesia Tbk (ADRO), and PT Medco Energi Internasional Tbk (MEDC) for the period September 2008 to December 2024. The exogenous variables used include the Climate Risk Index, Geopolitical Risk (GPR), and Global Economic Policy Uncertainty (GEPU). The NHMS-AR model is implemented with the assumption that exogenous variables influence the probability of regime shifts, while the autoregressive structure in each regime is homogeneous. The results show that the dynamics of energy sector stock returns can be represented by two hidden regimes: a stable regime and a volatile regime. Transition probability estimates indicate that CRI and GEPU increase the probability of switching between regimes, whereas GPR exhibits an asymmetric effect, depending on the direction of the transition. Furthermore, the volatile regime has a higher degree of persistence than the stable regime. The main contribution of this study lies in the application of NHMS-AR with non-homogeneous transition probabilities to Indonesian energy sector stocks, as well as in presenting empirical evidence on the role of external factors in shaping regime switching dynamics in emerging markets.]]>
<![CDATA[Eksplorasi Etnomatematika Konsep Geometri dan Perbandingan pada Makanan Tradisional Wingko Babat ]]>
<![CDATA[Salsabila Nur Aini]]>;
<![CDATA[Annafi Awantagusnik]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 9 No. 2 (2025) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v9i2.7163
<![CDATA[This study aims to explore the concept of ethnomathematics contained in the traditional food Wingko Babat, particularly in terms of geometry and comparison. As part of Indonesia's cultural heritage, Wingko Babat not only has historical and culinary value, but also contains relevant mathematical elements that can be used as a medium for contextual learning. This study uses a qualitative research method with an ethnographic approach, namely by conducting interviews and direct observations of the geometric shapes of the surface and space, as well as the ratio of ingredients in the making of Wingko Babat. The results show that Wingko Babat, which is shaped like a block, can be used to explain geometric concepts such as surface area and volume. In addition, the composition of ingredients in the Wingko Babat-making process also contains mathematical values in the form of ratios, comparisons, and proportions. This study proves that traditional foods can serve as a means of contextual mathematics learning, while strengthening the connection between local culture and modern education.]]>
<![CDATA[Comparison of K-Means and K-Medoids Algorithms in Clustering Indonesian Provinces Using Stunting Handling Index ]]>
<![CDATA[Mayang Ariani Fitria Ananta]]>;
<![CDATA[A'yunin Sofro]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 9 No. 2 (2025) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v9i2.7194
<![CDATA[Stunting remains a major public health problem and poses a significant challenge to human resource development in Indonesia. Differences in stunting management performance across provinces indicate regional disparities that require systematic and data-driven analysis. This study aims to cluster provinces in Indonesia based on the 2022 Stunting Management Specific Index (IKPS) and to compare the performance of the K-Means and K-Medoids clustering algorithms. The study uses secondary data from the Central Statistics Agency (BPS), covering 34 provinces and ten indicators composing the IKPS. Clustering was conducted using K-Means and K-Medoids algorithms. The optimal number of clusters was determined using the Elbow Method, while clustering quality was evaluated using the Davies–Bouldin Index (DBI). The results show that the optimal number of clusters is k = 5. Furthermore, the K-Medoids algorithm produces better clustering quality, as indicated by a lower DBI value compared to the K-Means algorithm, reflecting more compact clusters and clearer separation between provinces. The clustering results reveal distinct provincial groupings with varying stunting management characteristics, ranging from provinces with relatively strong and stable performance to those facing greater challenges related to geographical constraints and limited access to health services. Overall, this study demonstrates that cluster analysis is effective for identifying regional patterns in stunting management and can support policymakers in formulating more targeted, province-based strategies to improve the effectiveness of stunting prevention and intervention programs in Indonesia.]]>
<![CDATA[Pengembangan Pop Up Book Kontekstual pada Materi Teorema Pythagoras ]]>
<![CDATA[Clara Anggun Fadhilla]]>;
<![CDATA[Dwi Laila Sulistiowati]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 10 No. 1 (2026) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v10i1.7464
<![CDATA[The development of engaging and relevant learning media is a solution to the low level of student engagement in understanding abstract mathematical concepts. This study describes the design process for a Pythagorean Theorem pop-up book media, synergized with a contextual approach. The research procedure uses a Research and Development (R&D) approach, based on the seven stages of the Borg and Gall model, including needs analysis through final product refinement. Through validation instruments and response questionnaires, this study found that the product was considered highly valid by material experts and media experts. The positive response from students also strengthened the media's position as a practical learning tool. These findings confirm that contextual pop-up books are highly suitable for supporting a more effective understanding of mathematical concepts.]]>
<![CDATA[Efektivitas Pendekatan Pendidikan Matematika Realistik Indonesia (PMRI) untuk Meningkatkan Minat dan Hasil Belajar Matematika Siswa ]]>
<![CDATA[Rizki Asrarul Mufidah]]>;
<![CDATA[Agus Setiawan]]>;
<![CDATA[Isnaini Nur Azizah]]>;
<![CDATA[Choirudin Choirudin]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 10 No. 1 (2026) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v10i1.7529
<![CDATA[Low levels of students’ interest and achievement in mathematics are often associated with instructional methods that are abstract and insufficiently connected to real-life contexts. This study aimed to examine the effectiveness of the Indonesian Realistic Mathematics Education approach in enhancing students’ engagement and achievement in solving systems of linear equations in two variables. A quasi-experimental design with a nonequivalent control group was employed involving eighth-grade students at a private junior high school in Central Lampung Regency. The sample consisted of two classes selected using cluster random sampling, with one class assigned as the experimental group and the other as the control group. Data were collected through a validated learning-interest questionnaire and a reliable mathematics achievement test, and were analyzed using Multivariate Analysis of Variance (MANOVA). The findings revealed that students who learned through the Indonesian Realistic Mathematics Education approach demonstrated higher levels of learning interest and mathematics achievement than those in the control group. These results indicate that the Indonesian Realistic Mathematics Education approach is effective in promoting active learning and strengthening students’ ability to model and solve contextual mathematical problems.]]>
<![CDATA[Efektivitas Problem Based Learning Berbantuan Media Ular Tangga terhadap Kemampuan Pemecahan Masalah Ditinjau dari Minat Belajar Siswa ]]>
<![CDATA[Dewi Mekarsari]]>;
<![CDATA[Agus Setiawan]]>;
<![CDATA[Choirudin Choirudin]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 10 No. 1 (2026) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v10i1.7531
<![CDATA[This study aims to analyze the effectiveness of the Problem-Based Learning (PBL) model assisted by snakes and ladders game media on students' mathematical problem-solving ability in terms of learning interest on circle topics. This research employed a quasi-experimental method with a 2×2 factorial design involving 46 eleventh-grade students of SMA Taruna Gajah Mada Metro, divided into experimental and control groups. Data were collected through a problem-solving ability test and a learning interest questionnaire. Data were analyzed using two-way ANOVA. The results showed that the learning model had a significant effect on problem-solving ability. Students taught using PBL assisted by snakes and ladders media achieved higher scores than those taught conventionally. Learning interest also had a significant effect. However, there was no significant interaction between the learning model and learning interest ). The R Square value of 0.690 indicates that 69% of the variance in problem-solving ability is explained by the learning model and learning interest. Thus, PBL assisted by snakes and ladders media effectively improves students' mathematical problem-solving ability.]]>
<![CDATA[Pengaruh Model Project Based Learning dengan Pendekatan Realistic Mathematics Education terhadap Kemampuan Numerasi Siswa ]]>
<![CDATA[Lutfatul Hasanah]]>;
<![CDATA[Isnaini Nur Azizah]]>;
<![CDATA[Choirudin Choirudin]]>
<![CDATA[ Numerical: Jurnal Matematika dan Pendidikan Matematika Vol. 10 No. 1 (2026) ]]>
Publisher : <![CDATA[Universitas Ma'arif Lampung ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.25217/numerical.v10i1.7546
<![CDATA[This study aims to analyze the effect of the Project based learning (PjBL) model integrated with the Realistic Mathematics Education (RME) approach on students’ numeracy skills in social arithmetic material. The study uses a quantitative approach with a quasi-experimental design of the NonEquivalent Control Group Design type. The research population is from one private senior high school in Metro City. The sample consists of 44 eleventh-grade students divided into an experimental class and a control class, each consisting of 22 students. The research instrument is a multiple-choice numeracy test that has met the criteria of validity and reliability. Data analysis is conducted through the Shapiro–Wilk normality test, Levene’s homogeneity test, and the Independent Sample t-test at a significance level of 0.05. The results of the study show a significant difference between the experimental and control classes (t(42) = −3.737; p = 0.001). The N-Gain score of the experimental class is 0.557 (moderate category), which is higher than the control class at 0.278 (low category). It is concluded that the integration of PjBL and RME is effective in improving students’ numeracy skills and can be used as an alternative contextual and meaningful mathematics learning approach.]]>
