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Jurnal Absis : Jurnal Pendidikan Matematika dan Matematika
Published by Universitas Pasir Pengaraian
ISSN : 26554518     EISSN : 26548739     DOI : https://doi.org/10.30606/absis
Core Subject : Education,
Mathematics
Jurnal Absis adalah jurnal penelitian yang dikelola oleh program studi Pendidikan Matematika Universitas Pasir Pengaraian. Absis diambil dari istilah matematika yang merupakan jarak titik terhadap sumbu tegak. Jurnal Absis memuat artikel hasil penelitian atau kajian literatur dalam bidang pendidikan matematika dan matemtika. Jurnal absis terbit dua kali dalam satu tahun yaitu pada bulan April dan Oktober. Jurnal Absis diharapkan dapat menjadi tempat bagi peneliti pendidikan matematika atau matematika utamanya bagi dosen Pendidikan Matematika Universitas Pasir Pengaraian, dosen berbagai universitas, maupun guru untuk mempublikasikan artikel ilmiahnya. Jurnal Absis merupakan terbitan berkala yang dapat diakses secara terbuka oleh pembaca untuk mendukung tumbuh kembangnya ilmu pengetahuan, terutama dalam bidang Pendidikan matematika dan matematika.
Arjuna Subject : Umum - Umum
Articles 222 Documents
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An analysis of students' mathematical understanding in polyhedral geometry Subekti, Hafizah Syahrani; Murni, Atma; Roza, Yenita
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 8 No. 3 (2025): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v8i3.3405

Abstract

Mathematical understanding is a fundamental component of mathematics learning, as it underpins the development of other essential mathematical competencies. However, many students tend to rely on memorizing formulas without achieving a deep conceptual understanding. This study aimed to analyze students' mathematical understanding in the topic of three-dimensional shapes with flat surfaces at the junior high school level. A descriptive qualitative approach was employed, involving 25 students from SMP Negeri 12 Pekanbaru as research participants. Data were collected through two open-ended test items and semi-structured interviews, and analyzed using indicators of mathematical understanding, including restating concepts, applying procedures algorithmically, and connecting concepts within and beyond mathematics. The results showed that the majority of students (76%) demonstrated a low level of mathematical understanding, while 12% were classified as having moderate understanding and 12% as having high understanding. Students in the high category were able to fulfill all indicators, whereas those in the moderate and low categories experienced difficulties, particularly in applying procedures algorithmically and establishing conceptual connections. These findings indicate the need for instructional practices that emphasize conceptual understanding and support students in meaningfully connecting mathematical concepts to problem-solving contexts.
The effect of the discovery learning model on students' mathematical reflective thinking skills Meizano, Fadhel Ahmad; Nurhanurawati; Triana, Mella
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 8 No. 3 (2025): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v8i3.3444

Abstract

Mathematical reflective thinking is an essential higher-order thinking skill that supports students in analyzing, evaluating, and drawing conclusions during problem solving. This study aims to examine the effect of the Discovery Learning (DL) model on students' mathematical reflective thinking skills. The research employed a quantitative approach using a quasi-experimental design with a pretest–posttest control group. The population consisted of all Grade VIII students of SMP Negeri 9 Bandar Lampung in the 2024/2025 academic year, with two classes selected as the experimental and control groups through cluster random sampling. Data were collected using a mathematical reflective thinking skills test and analyzed using N-Gain analysis and an independent sample t-test. The results show that students taught using the DL model achieved higher posttest scores and greater improvement in mathematical reflective thinking skills compared to students taught through conventional learning. The average N-Gain of the experimental class was higher than that of the control class, and hypothesis testing indicated a significant difference between the two groups. These findings indicate that the Discovery Learning model has a positive and significant effect on students' mathematical reflective thinking skills and can be effectively implemented in mathematics learning.
Analysis of PjBL-STEAM implementation: Challenges for prospective teachers in developing android learning media Lutfi, Muh. Khaedir; Kusumastuti, Fitri Anisa; Juana, Nadya Amalia; Nulhakim, Ade Lukman; Khomeni, Ayathollah; Lubis, Roslian; Santika, Eka
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 8 No. 3 (2025): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v8i3.4066

Abstract

Technological developments demand adaptation in the world of education, particularly in the integration of technology into mathematics learning. Prospective student teachers need to possess the competencies to create innovative learning media that are not only content-accurate but also visually and technologically engaging. This study aims to describe the implementation of the Project-Based Learning (PjBL) model with STEAM (Science, Technology, Engineering, Art, and Mathematics) content in producing Android-based mathematics learning media. The method used was descriptive qualitative through triangulation of observation data, discussions, and analysis of the output product. The results showed that PjBL facilitated students in practicing the engineering cycle of media creation. However, obstacles were encountered in the Technology and Mathematics elements, where students experienced difficulty transforming textbook content into the system logic of an Android application. Furthermore, technical barriers to mastery of tools (Technology) such as iSpring Suite were a major challenge. Nevertheless, this approach successfully encouraged students to integrate art elements into interface design and mathematical logic within a single, integrated product. It was concluded that the implementation of PjBL with a STEAM nuance effectively helped lecturers and students produce usable digital media products.
Development of a pattern-based numeracy learning module to enhance students' creative thinking and numeracy skills Yuniati, Yesi; Siswono, Tatag Yuli Eko; Prastiti, Tri Dyah
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 8 No. 3 (2025): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v8i3.3484

Abstract

Numeracy and creative thinking are essential skills for elementary students to solve contextual and complex mathematical problems. This study aims to develop and evaluate a numeracy learning module based on number and visual patterns for fourth-grade students. A research and development approach was applied using the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The module was validated by content and media experts, and tested at SDN Banjarkemuning and SDN Semampir 1. Data were collected through expert validation sheets, implementation observations, student response questionnaires, and pretest–posttest instruments. The validation process indicated that the module met high standards of content quality, clarity of language, presentation, and visual design. The implementation of the module resulted in a significant improvement in students' numeracy and creative thinking skills, as reflected in the posttest score gains. The study's main contribution lies in integrating numeracy and creativity in a single contextual, activity-based teaching tool. These findings support the potential of structured and contextualized numeracy instruction to enhance conceptual understanding and student engagement. The implications suggest that such modules can be effectively adopted to enrich elementary mathematics instruction and curriculum design.
A Qualitative analysis of teacher feedback and student motivation in statistics didactic design Yunarti, Tina; Mutiarani, Annisa; Setiawati, Santy; Pujarwati, Niki
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 9 No. 1 (2026): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v9i1.3347

Abstract

Teacher feedback plays an important role in supporting students’ learning motivation, particularly when it is integrated into the learning process through a well-structured didactic design. However, feedback in statistics learning is often still predominantly evaluative and has not been systematically used to guide students’ learning processes. This study aims to identify the types of teacher feedback provided to students in Class VII-A of SMP Negeri 26 Bandar Lampung and to describe students’ learning motivation after receiving feedback within a statistics didactic design. This research employed a qualitative case study design involving 31 seventh-grade students in the even semester of the 2023/2024 academic year. Data were collected through field notes, Likert-scale questionnaires on teacher feedback and student learning motivation, and interviews. The data were analyzed descriptively to identify patterns of teacher feedback and students’ motivational responses. The findings indicate that verbal feedback was the dominant form of feedback provided by the teacher. The most frequently observed feedback indicators were timely, specific, and process-focused feedback. In addition, students with high and moderate mathematical ability tended to show higher learning motivation than students with low mathematical ability. These findings suggest that process-oriented teacher feedback can support students’ motivation in learning statistics, especially when it is embedded in a structured didactic design.
Development of mathematics teaching materials based on the scientific approach to facilitate students' mathematical problem–solving ability in statistics learning Ananda, Tasya; Saragih, Sehatta; Suanto, Elfis
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 9 No. 1 (2026): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v9i1.3483

Abstract

This study was motivated by students’ low mathematical problem-solving ability, which was caused by inappropriate learning approaches and the lack of teaching materials that support the development of mathematical problem-solving ability. This study aims to produce mathematics teaching materials based on a scientific approach that are valid and practical to facilitate students’ mathematical problem-solving ability in statistics material, specifically measures of central tendency, for Grade VIII SMP/MTs students. This research is development research using the Tessmer model, which consists of preliminary and formative evaluation stages, including self-evaluation, expert review, one-to-one evaluation, and small group evaluation. The instruments used were validation sheets and student response questionnaires. The results of validation by three experts showed that the teaching materials had a very high level of validity, with an average score of 87.4%. Readability and attractiveness tests through one-to-one evaluation, as well as practicality tests through small group evaluation involving 11 students, resulted in an average response score of 89.25%, which was categorized as very practical. These findings show that the developed teaching materials are feasible to use and can support the development of students’ mathematical problem-solving ability. The contribution of this research lies in the explicit integration of the scientific approach into the structure of teaching materials to facilitate mathematical problem-solving ability. The implication of this research shows that developing teaching materials based on the scientific approach can be a strategic solution for improving the quality of mathematics learning at the junior high school level.
Forecasting patient visits in primary healthcare using arima, holt's exponential smoothing, prophet, and weighted ensemble models Fiddaraeni, Nayla Saadah; Wijaya, Madona Yunita; Mahmudi
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 9 No. 1 (2026): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v9i1.3507

Abstract

The variability of patient visits in primary healthcare facilities requires accurate and interpretable forecasting methods to support service planning, resource allocation, and staff scheduling. This study aims to evaluate the forecasting performance of ARIMA, Holt’s exponential smoothing, Prophet, and weighted ensemble models in predicting monthly patient visits at XYZ Primary Clinic in Bogor City. A quantitative time series forecasting approach was applied using monthly patient visit data from January 2020 to December 2023, consisting of 48 observations. The data were divided into 38 training observations and 10 testing observations using an approximately 80:20 split. Model performance was evaluated using Mean Absolute Percentage Error (MAPE), Root Mean Square Error (RMSE), and Mean Absolute Error (MAE). The results show that Holt’s exponential smoothing provided the best individual forecasting performance, with the lowest MAPE of 9.39%, RMSE of 169.43, and MAE of 141.60. Among the ensemble configurations, the combination of Holt’s and Prophet produced the best ensemble performance, with a MAPE of 9.56%, RMSE of 171.01, and MAE of 146.11. However, the weighted ensemble models did not outperform the best individual model. These findings indicate that the patient visit data exhibit a relatively stable trend pattern, making Holt’s exponential smoothing more suitable than more complex approaches for this dataset. This study highlights the importance of selecting forecasting models based on data characteristics rather than model complexity alone. The findings provide practical implications for improving patient visit forecasting, resource planning, and service management in primary healthcare settings.
Evaluating the reliability of mathematical literacy assessment for pre-service teachers: A generalizability theory approach Afri, Lusi Eka; Nurrahmawati; Arcat
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 9 No. 1 (2026): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v9i1.3585

Abstract

Reliable assessment of pre-service teachers' mathematical literacy skills is crucial to ensure their readiness to teach. However, conventional reliability indices often fail to disentangle various sources of measurement error simultaneously. This study applies Generalizability Theory (G-Theory) to evaluate and diagnose the reliability of a mathematics literacy instrument. A two-facet nested design, denoted as , was employed involving 30 undergraduate students (p) with six open ended essay item (i) evaluated by three independent raters (r). A G-study was conducted to estimated variance components, revealing that the largest source of variance originated from raters (92.8%). The initial analysis yielded d generalizability coefficient of 0.27 and dependability coefficient of 0.01, indicating low reliability due to substantial rater inconsistency. A D-study was conducted to evaluate alternative designs, however the results showed that even by increasing the number of items and raters, the G-coefficient 0.38 above the threshold of 0.80. These findings highlight that rater effects pose a major threat to measurement stability and suggest that the current instrument requires fundamental refinement of its scoring rubrics and procedures. This study serves as a critical diagnostic for teacher education programs, providing an empirical basis for optimizing assessment design and institutionalizing rater calibration to improve the evaluation of future educators.
The effect of digital mathematics learning on students’ problem-solving and creative thinking abilities in statistics learning Subiyati, Rini; Siswono, Tatag Yuli Eko; Ramdhani, Sendi
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 9 No. 1 (2026): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v9i1.3743

Abstract

Digital learning in mathematics has gained increasing attention as a way to support students’ higher-order thinking skills, particularly problem-solving and creative thinking. This study aimed to investigate the effect of digital mathematics learning on students’ problem-solving and creative thinking abilities in statistics. A quasi-experimental design was used involving 54 students who were divided equally into experimental and control groups. Data were collected through pretests and posttests and analyzed using descriptive statistics, paired-sample t-tests, and independent-sample t-tests. The results showed that the experimental group achieved higher posttest scores than the control group in problem-solving ability (72.41 vs. 63.78) and creative thinking ability (70.15 vs. 61.44). The experimental group also showed significant improvement from pretest to posttest in problem-solving ability (mean difference = 15.37, t = 8.21, p < 0.001) and creative thinking ability (mean difference = 14.81, t = 7.56, p < 0.001). In addition, students in the digital learning class performed better than those in the conventional class in fluency, flexibility, originality, and total creativity score. These findings indicate that digital mathematics learning can help students solve statistical problems more systematically and encourage creativity in exploring different solution strategies. This study highlights the importance of integrating digital media, such as interactive videos and Excel-based activities, into statistics learning to support more innovative mathematics instruction.
Forecasting indonesia's non-oil and gas exports and imports using the vector autoregressive integrated moving average (VARIMA) model Wulandari, Sifha Desti; Wijaya, Madona Yunita; Fauziah, Irma
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 9 No. 1 (2026): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v9i1.3746

Abstract

Indonesia’s international trade, particularly in the non-oil and gas sector, plays a significant role in the national economy. This study aims to model and forecast Indonesia’s non-oil and gas exports and imports using the Vector Autoregressive Integrated Moving Average (VARIMA) model, a multivariate time series method that considers dynamic interdependence between variables. The data used in this study were monthly data from January 2018 to December 2024, consisting of 84 observations divided into 58 training data and 26 testing data. Model order identification was carried out using the Matrix Autocorrelation Function (MACF) for the MA component and the Matrix Partial Autocorrelation Function (MPACF) for the AR component. Parameter estimation was conducted using Maximum Likelihood Estimation (MLE) and refined through a restriction process to retain only statistically significant parameters. Diagnostic tests showed that the residuals met the assumptions of white noise and multivariate normality. Among several candidate models, VARIMA(2,1,2) was selected as the optimal model based on the balance between information criteria, model complexity, parameter stability, and forecasting reliability. The model produced MAPE values of 11.10% for imports, categorized as good, and 8.81% for exports, categorized as very good. The forecast results showed relatively stable fluctuations, with imports projected to range from US$14.32 million to US$18.48 million and exports from US$18.38 million to US$26.41 million. These findings indicate that the VARIMA(2,1,2) model provides adequate forecasting performance and can serve as a quantitative basis for supporting foreign trade policy planning, particularly in anticipating the dynamics of Indonesia’s non-oil and gas exports and imports.

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