AKSIOMA: Jurnal Matematika dan Pendidikan Matematika
Journal title AKSIOMA : Jurnal Matematika dan Pendidikan Matematika Frequency Aksioma routinely publishes three times a year: April, September and December. DOI Prefix 10.26877 by ISSN ISSN 2579-7646 (online) | ISSN 2086-2725 (Cetak) Publisher Universitas PGRI Semarang Citation Google Scholar | Garuda | Dimensions
The study examined students' mathematical reasoning skills in evaluating functions using GeoGebra in arithmetic sequence at senior high school
Mathematical reasoning ability remains relatively low, particularly in arithmetic sequence material that requires skills in recognizing patterns and evaluating functions. Therefore, it is necessary to apply the Inquiry-Based Learning method, assisted by GeoGebra, in the learning process. This study aims to describe students' mathematical reasoning abilities through Inquiry-Based Learning assisted by GeoGebra in evaluating arithmetic sequence functions in Grade XI of SMA Negeri 8 Palembang. The research employed a descriptive method with 28 students from Class XI.6 as subjects. Data were collected through a written test consisting of three essay questions based on mathematical reasoning indicators to measure students' ability to evaluate arithmetic sequence functions. Data analysis was conducted descriptively based on the indicators of students' mathematical reasoning abilities. The results showed that the average mathematical reasoning ability of students was in the good category, with a percentage of 68.9%. The distribution of students' abilities consisted of 39.29% (11 students) in the excellent category, 17.86% (5 students) in the good category, 39.29% (11 students) in the fair category, and 3.57% (1 student) in the poor category. Research findings indicate that the use of GeoGebra in inquiry-based learning supports students in understanding arithmetic sequences, evaluating functions, and determining the n-th term in a more structured and logical manner.
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Survival analysis of the recovery rate of typhoid fever using the Kaplan-Meier and Nelson-Aalen methods
Typhoid fever remains a health problem with a high incidence in Indonesia. This study analyzes the recovery rate and identifies factors influencing the recovery of typhoid fever patients using the Kaplan-Meier, Nelson-Aalen, and Cox Proportional Hazard models. This quantitative study was based on data from 400 inpatients at Medan Haji General Hospital from January to December 2024. The variables studied included age, gender, type of antibiotic, and comorbidities. The results showed a median recovery time of five days, with a sharp decline after the fourth day. Patients without comorbidities had a higher chance of recovery, and comorbidities were shown to significantly influence the recovery rate (p < 0.001; HR = 1.626), while other variables were insignificant.
Procedural fluency of 10th-grade students on the spltv topic through discovery learning assisted by photomath
Procedural fluency is a crucial component of mathematical proficiency, enabling students to solve problems accurately and efficiently. This study aimed to describe the procedural fluency of tenth-grade students in solving Three-Variable Linear Equation Systems (SPLTV) through Discovery Learning assisted by Photomath. This study employed a descriptive qualitative approach, involving 39 tenth-grade students from a senior high school in Palembang. Three participants were selected as main participants based on their ability levels: high, moderate, and low. Data were collected through procedural fluency tests and interviews. The use of these two techniques provided a more comprehensive picture of students' procedural fluency. The results showed variation in students' procedural fluency levels. Students with high abilities were able to choose and utilise the appropriate solution procedures, apply the steps systematically, and modify or correct the procedures when they found inconsistencies in the results. Students in the moderate category can choose the correct method and attempt to recheck the solution results, but are not yet fully able to correct the errors found. Meanwhile, students with low abilities are not yet able to apply solution procedures, nor modify or correct procedures, even when errors occur in the solution.
Students' analogical reasoning and creative thinking across mathematical ability levels
This study examines students' analogical reasoning and creative thinking in solving open-ended mathematical reflection problems across different levels of mathematical ability. Using a qualitative descriptive approach, data were collected from ninth-grade students through written tasks and interviews, with three participants representing high, medium, and low ability levels. The analysis focused on the stages of analogical reasoning: structuring, mapping, applying, and verifying based on Ruppert's model. The findings show apparent differences in students' reasoning processes. High-ability students demonstrated complete and systematic analogical reasoning across all stages and were able to justify their solutions logically. Medium-ability students demonstrated a partial understanding and relied mainly on procedural strategies, whereas low-ability students relied on intuitive visualization with limited mathematical justification. These differences suggest that creative thinking plays a crucial role in enhancing the completeness of analogical reasoning. The novelty of this study lies in its detailed analysis of how students with different mathematical ability levels progress through each stage of analogical reasoning when solving open-ended reflection problems. The results suggest that integrating analogical reasoning tasks into open-ended mathematics instruction can strengthen students' conceptual understanding and support the development of creative thinking.
Students' error profiles in solving statistical problems based on Newman's error analysis
Many students experience difficulties when solving statistical problems, indicating the need for further research to address these issues. The purpose of this study is to identify the types of errors students make and the factors contributing to these errors. The error types in this study are analyzed using Newman's Error Analysis (NEA), which includes reading and decoding errors, comprehension errors, transformation errors, process skill errors, and encoding errors. This study employs a qualitative method with six ninth-grade students as research subjects. Data were collected through tests, interviews, and documentation. A purposive sampling technique was employed, and the data were analyzed using Miles and Huberman's data analysis model. The results show that students with low cognitive ability committed comprehension errors, while students with medium and high cognitive ability did not. Process skill errors and encoding errors occurred among students across all cognitive ability levels—high, medium, and low. The factors contributing to these errors include limited literacy skills, lack of student accuracy, and the influence of previous errors.
Analysis of students' algebra learning motivation through the use of desmos and amplify classroom
Learning motivation is a crucial factor in the success of mathematics education, a field that requires strong analytical skills and persistence. However, based on preliminary observations, students tend to exhibit low learning motivation when encountering algebraic materials, which are often abstract and theoretical. Due to this, the present study aimed to evaluate students' learning motivation after using interactive digital learning tools (Desmos and Amplify Classroom) in algebra. Using a descriptive quantitative approach, this study focused on Grade IX students of SMA Harapan in Bangka Regency. A learning motivation questionnaire consisting of 15 items was used, based on five motivational indicators: learning drive, attention, perseverance, diligence, and the desire to succeed. The data were descriptively analyzed by calculating the mean scores and categorizing the students' motivation levels. The results indicate that students' learning motivation, in general, fell into the moderate category, with a mean score of 2.79. Each indicator recorded results in the mild category, with the highest score of 2.91 for perseverance in completing tasks and the lowest score of 2.67 for the desire to succeed. The results suggest that the use of Desmos and Amplify Classroom had a positive impact on students' motivation to learn, particularly in the interest and engagement dimension, through the interactive algebraic graph visualizations. However, the effect had not yet reached a high level. The integration of interactive digital media for the first time in this study helps develop a more positively impactful approach to teaching mathematics by increasing students' motivation and deepening their engagement in the exploration phase of their learning.
Development of mobile learning-based geometric numeracy media (nuget-mo) using a contextual approach on quadrilateral area material
This study develops a mobile learning–based geometry numeracy media called Nuget-Mo. The media integrates a contextual learning approach into the topic of quadrilateral area. The primary objective of the study is to improve students' numeracy literacy significantly. The method used is Research and Development with the ADDIE model. The study involves 30 seventh-grade students from SMPN 16 Jambi City. The purposive sampling technique is used to determine the research sample. Data were obtained through expert validation, student questionnaires, and numeracy tests. Expert validation showed scores above 85%. These scores placed Nuget-Mo in the "very valid" category. Student questionnaires indicated a very high level of practicality. The practicality score reached 85,43%. Students found the media very easy to use and engaging. The effectiveness test showed a very significant improvement in learning outcomes. The average pretest score was 64,06. The posttest score increased to 89,53 after the use of the media. The N-Gain value of 0,71 belonged to the high category. This improvement indicated much better concept mastery. The media also enhanced students' problem-solving abilities. The findings confirmed that Nuget-Mo was highly effective in improving numeracy literacy. The media was valid, practical, and highly suitable for implementation in geometry learning. Nuget-Mo proved to provide a significant learning impact for students.
The Utilization of cross-math-based student worksheets in understanding number operations through set materials
This study aims to explore the potential use of student worksheets (LKM) based on Cross Math with the Realistic Mathematics Education (RME) approach to improve students’ understanding of number operations through set theory. The research employed a preliminary study with a mixed-method approach. Data were collected through questionnaires distributed to 75 mathematics education students at Universitas Muhammadiyah Bangka Belitung who had taken Basic Mathematics courses, as well as interviews with course lecturers. The questionnaire results revealed that the majority of students considered arithmetic operations as an essential topic to master, with a tendency to better understand concepts when linked to real-life experiences. Most students also perceived that learning media, particularly worksheets, are highly supportive in the learning process. Lecturer interviews further indicated that students often face difficulties in understanding algebra, sets, and geometry, which highlights the need for innovative, interactive, and contextual learning media. Based on these findings, Cross Math-based worksheets with the RME approach have the potential to become an alternative learning medium that can increase motivation, strengthen conceptual understanding, and provide a more meaningful learning experience. This study serves as a preliminary foundation for subsequent development stages, namely the production of Cross Math-based worksheets that are valid, practical, and effective for use in mathematics learning at the higher education level.
The Influence of animated videos using plotagon and canva on quadratic function materialon students' conceptual understanding
The main problem in mathematics learning at the high school level, especially in quadratic function material, is the low level of students' conceptual understanding. The purpose of this scientific study is to determine the significant effect of using animatestudy used a quantitative approach using an experimental method with a pretest-posttest cd video media created with the help of Plotagon and Canva on quadratic function material on high school students' conceptual understanding abilities. This ontrol group design. The main instrument was a test designed to assess students' level of mathematical concept understanding. The data study shows that the use of animated video content significantly improves students' conceptual understanding, as indicated by a significance value (Sig.two-sided p) of less than 0.001. These results show that the use of Plotagon and Canva to create animated video-based learning materials is proven to be effective and feasible to be implemented as an innovative alternative in mathematics learning, especially in abstract materials such as quadratic functions.
Penerapan model PjBL berbantuan geogebra untuk meningkatkan kemampuan berpikir kreatif matematis siswa
Mathematical creative thinking skills are essential for students in the digital era, as they help students generate new ideas in problem-solving. Creative thinking is one of the 4Cs skill competencies identified as key 21st-century educational skills. Mathematics is one of the subjects expected to enhance students’ mathematical creative thinking abilities through the appropriate selection of learning models, media, and methods.The purpose of this study is to determine the effectiveness of learning using the Project-Based Learning (PjBL) model assisted by GeoGebra in improving students’ mathematical creative thinking skills. The method used in this study is the Systematic Literature Review (SLR). Literature searches were conducted through Google Scholar and Scopus within the time span of 2018–2025. The search yielded 26 articles related to the use of the Project-Based Learning (PjBL) model assisted by GeoGebra and students’ mathematical creative thinking skills. Based on the results of the literature review, it can be concluded that the implementation of the PjBL model assisted by GeoGebra is effective in enhancing students’ mathematical creative thinking skills.
The effect of learning styles on senior high school students’ mathematical abstraction ability: A study at SMA N 11 Semarang
This study addresses the low level of mathematical abstraction ability among students at SMA Negeri 11 Semarang, as identified through a preliminary investigation. To overcome this issue, the Multi-Representation Discourse Model supported by performance-based assessment was employed, with the aim of enhancing students' abstraction capabilities. The primary objective of this research is to examine the influence of students’ learning styles on their mathematical abstraction ability. A quantitative research approach was adopted, focusing on the relationship between learning styles and abstraction skills. Data were collected through an abstraction ability test, a learning style questionnaire, and interviews. The study population comprised Grade XI students at SMA Negeri 11 Semarang during the 2024/2025 academic year. A purposive sampling technique was utilized to select participants who, in the even semester of the 2024/2025 academic year, had studied the topic of related angles, demonstrated active classroom participation, and possessed effective communication skills. The sample selected for this study was Class XI-10. The findings revealed a positive correlation between students’ learning styles and their mathematical abstraction ability, with a correlation coefficient of 0.854, indicating a strong positive relationship. Furthermore, the coefficient of determination showed that learning styles accounted for 73% of the variance in students’ abstraction ability, while the remaining 27% was influenced by other factors. Based on these results, it can be concluded that learning styles significantly and positively affect students' mathematical abstraction thinking ability.
Mathematical Abstraction Thinking Ability
Persamaan Diferensial Parsial dalam teknologi radar pada era perang dunia II: suatu tinjauan historis
This study examines the contribution of Partial Differential Equations (PDEs) to the development of radar technology, highlighting World War II as a crucial historical period. This context was chosen because radar experienced rapid progress during that time, and the application of Maxwell’s equations and the wave equation proved decisive in shaping global military strategy. Thus, World War II serves as a concrete example of how mathematical models can bridge theory and practice while driving technological innovations that changed the course of history. The issue addressed is the lack of understanding and emphasis on the application of PDEs in current engineering education. The objective of this research is to explore the role of PDEs in supporting radar design and optimization while identifying gaps in engineering curricula related to their application. The method employed is a literature study, analyzing various scientific sources and relevant historical documents. The findings indicate that PDEs, through Maxwell’s equations and the wave equation, provide a fundamental mathematical basis for radar development. These results show that radar not only enhanced object detection accuracy but also significantly influenced military strategy. The study further reveals that current teaching approaches remain largely theoretical and insufficiently applicative, leaving graduates unprepared for industry challenges. Therefore, a better understanding of PDEs is expected to foster innovation in radar technology and other fields. The study also emphasizes the need for curriculum reform to be more practice-oriented, enabling graduates to connect theory with real-world applications and contribute effectively to future technological and industrial progress.
Ethnomathematics on theme P5 local wisdom at SMP 3 Satu Atap Gebog
This study aims to examine the ethnomathematics values in the theme of the P5 activities of SMP 3 Satu Atap Gebog, which has the theme of local wisdom. The researcher conducted the research at SMP 3 Satu Atap Gebog, located in Rahwatu Village, Gebog District, Kudus Regency. The theme of local wisdom in P5 at SMP 3 Satu Atap Gebog is the Bodo Contong tradition, which is typical of the culture in Rahtawu Village, Kudus Regency. The research was conducted as a type of qualitative research. The analysis of this qualitative research uses the Miles and Huberman method, which consists of four steps, namely data collection, data reduction, data presentation, and drawing conclusions. Data was obtained from various sources to be analyzed, and the data that was received was then triangulated to determine the validity of the research data. The type of triangulation used is source triangulation. The results of the study are that there are close mathematical values in the Bodo Contong tradition. Traditional food in the Bodo Contong tradition has various forms of mathematical objects and has its own philosophy about the lives of people as God's creatures. This explains the ethnomathematics values that exist in the Bodo Contong culture, which is alive and continues to be maintained by the residents of Rahtawu Village, Gebog District, Kudus Regency.
Penjadwalan perkuliahan dengan model integer linear programming di teknik logistik universitas pertamina
Penjadwalan perkuliahan yang memuaskan semua pihak seringkali tidak mudah untuk dilakukan. Fenomena ini terjadi secara berulang setiap semester baru akan dimulai. Ada banyak keterbatasan dan kendala yang perlu dipertimbangkan agar jadwal yang optimal dapat disusun, antara lain jumlah dosen, pemetaan keahlian terhadap mata kuliah, dan ketersediaan ruang yang terbatas. Penelitian ini berfokus pada penyelesaian permasalahan penjadwalan kuliah di Program Studi Teknik Logistik Universitas Pertamina. Model integer linear programming (ILP) dimanfaatkan untuk mencari jadwal terbaik yang mengakomodir keterbatasan ruang, waktu, dan personil baik dari sisi dosen maupun mahasiswa. Model ILP dirancang untuk menjawab berbagai tantangan seperti kemungkinan konflik jadwal, dan pembagian waktu antara kelas teori dan praktikum yang tidak sesuai urutan rencana pembelajaran. Pencarian solusi optimal dilakukan dengan bantuan perangkat lunak LINGO. Jadwal yang diperoleh, selain optimal, juga memperhatikan penggunaan ruang yang efisien. Meskipun jadwal yang memenuhi seluruh konstrain ditemukan, namun diketahui pula masih ada keterbatasan solusi dimana tidak ada jeda antar kelas dalam beberapa kasus, yang menunjukkan perlunya penyesuaian lebih lanjut pada pengembangan model berikutnya.
Penerapan pembelajaran berdiferensiasi dengan pendekatan tarl dan culturally responsive teaching terhadap pemahaman konsep materi aljabar
Rendahnya pemahaman konsep matematis disalah satu sekolah kota Jambi disebabkan oleh penerapan pembelajaran yang masih menggunakan pembelajaran yang konvensional. Konvensional artinya pembelajaran yang seperti guru menjelaskan materi dengan ceramah lalu diberikan tes tanpa menggunakan model dan pendekatan yang membantu akan pemahaman konsep matematis siswa. Berdasarkan kurikulum merdeka yang diterapkan serentak dibutuhkan inovasi untuk mewujudkan kegiatan pembelajaran yang lebih menyenangkan. Dalam hal ini, guru perlu mengetahui gaya belajar siswa sehingga dapat mewujudkan tujuan dari penerapan kurikulum merdeka. Tujuan dilakukannya penelitian ini ialah supaya mengetahui perbedaan pengaruh yang signifikan dari penerapan pembelajaran berdiferensiasi dengan pendekatan Teaching at the Right Level (TaRL) dan Culturally Responsive Teaching (CRT) pada materi aljabar. Penelitian ini menggunakan metode eksperimen dengan desain penelitian control group design dan populasinya ialah siswa kelas tujuh. Instrumen yang digunakan ialah angket dan soal tes. Teknik analisis datanya menggunakan uji normalitas, homegenitas, anova dan tukey. Adapun hasil yang diperoleh ialah adanya perbedaan yang signifikan dari penerapan pembelajaran yang diteliti sesuai gaya belajar anak tersebut dengan pendekatan TaRL dan CRT pada pemahaman konsep matematis siswa dengan materi aljabar kelas tujuh. Dengan demikian penelitian ini juga diharapkan bisa menjadi pertimbangan, pandangan dan informasi untuk membuat penelitian selanjutnya yang lebih luas. Peneliti juga berharap dengan penggunaan pembelajaran berdiferensiasi berdasarkan gaya belajar siswa melalui pendekatan TaRL dan CRT akan pemahaman konsep siswa pada materi aljabar kelas tujuh bisa menjadi bahan pertimbangan untuk penelitian selanjutnya.
Penerapan model pembelajaran reading, mind mapping, sharing (RMS) berbantuan desmos untuk meningkatkan kemampuan berpikir kritis dan self concept siswa
This study emerged due to the significant need to improve students' critical thinking skills and self-concept. The purpose of this study was to analyze the effectiveness of the Reading, Mind Mapping, and Sharing (RMS) learning model assisted by Desmos in improving critical thinking skills and self-concept. The research method used a quasi-experiment with a non-equivalent control group design. The research sample consisted of two classes randomly selected from a public junior high school in Purwakarta. The main instruments were a valid and reliable critical thinking skills test and a questionnaire to measure self-concept. The results showed that students who participated in Desmos-assisted RMS learning obtained an average posttest score of 45.6 for critical thinking skills, which was higher than the conventional class score of 13.3. The N-Gain value of the Desmos-assisted RMS class was 0.21 (moderate category), while the conventional class was 0.14. The t-test showed a value of (2.741) ≥ (1.692), indicating a significant increase in critical thinking skills, with better results than conventional learning. In addition, the self-concept of students in the RMS class was in the moderate category with a range of 2.79 ≤ X < 3.03 and showed a positive response. Based on these findings, the Desmos-assisted RMS model can be one option for creating more active learning and supporting the development of students' critical thinking.
Meningkatkan kemampuan penalaran matematis dan self-regulated learning melalui model CinQASE
Self-regulated learning and mathematical reasoning ability are two fundamental competencies that need to be optimized in the context of mathematics learning. This study aims to strengthen students’ mathematical reasoning ability while mapping their level of self-regulated learning through the implementation of the Collaborative in Questioning, Analyzing, Synthesizing, and Evaluating (CinQASE) learning model. The study employed a Nonequivalent Control Group Design with seventh-grade students from a junior high school as the research subjects, involving two randomly assigned classes. The instruments used were a mathematical reasoning ability test and a Self-Regulated Learning (SRL) questionnaire in the form of statements with a Likert scale, both of which met high validity and reliability criteria. The findings revealed a statistically significant difference in the improvement of mathematical reasoning ability between students in the experimental and control classes. The results also indicated that the self-regulated learning of students who participated in the CinQASE learning model was categorized as moderate. These findings suggest that the CinQASE model can serve as a strategic option to optimize.
Pengaruh model pembelajaran project-based learning berbantuan prezi terhadap kemampuan penyelesaian masalah siswa kelas VIII
This study aims to examine the effect of the Project-Based Learning (PjBL) model assisted by Prezi media on students’ mathematical problem-solving skills. The research employed a quantitative method with a quasi-experimental approach using a pretest-posttest control group design. The population consisted of all eighth-grade students at SMP Muhammadiyah 1 Medan, totaling 320 students. The sample consisted of 37 students, comprising the experimental class VIII-T1 (18 students) and the control class VIII-U (19 students). Data analysis was conducted through three stages: first, the normality test using Shapiro-Wilk; second, the homogeneity test using Levene’s Test; and third, the independent-samples t-test. The results showed that the significance value (Sig. 2-tailed) of the t-test was 0.002. Since this value is lower than the significance level of 0.05 (0.002 < 0.05), the null hypothesis (H₀) was rejected and the alternative hypothesis (H₁) was accepted. These findings confirm that the PjBL model assisted by Prezi has a strong effect in enhancing students’ mathematical problem-solving skills.
Hasil belajar siswa melalui Think Pair Share berbantuan wizer.me pada materi SPLDV di MTsN
This study aims to examine student learning outcomes through a cooperative learning model using the think-pair-share method assisted by wizer.me on the subject of two-variable linear equation systems to achieve learning completeness. The research design used is a pre-experimental design with a one-group pretest-posttest design. The research sample consisted of 33 eighth-grade students selected using simple random sampling. Data collection techniques were conducted through tests and observations. Data processing techniques were carried out using inferential statistics, namely normality tests, Wilcoxon tests, and n-gain score tests. The results of the study obtained data processing , namely 4,976 > 1,645, which based on the decision criteria rejected and accepted , meaning that the learning completeness of eighth grade students on the subject of two-variable linear equation systems was achieved through the think pair share cooperative learning model assisted by wizer.me. Therefore, the application of the think-pair-share cooperative learning model assisted by wizer.me can also be applied to other materials in mathematics learning to help students become accustomed to learning both individually and in groups and familiar with the features of digital media assistance.
Problem-based learning to improve students' mathematical communication skills and learning motivation
This study aims to analyze the implementation of Problem-Based Learning (PBL) in improving students' mathematical communication skills and learning motivation. The method employed was a Systematic Literature Review (SLR), which analyzed ten published articles from 2019 to 2024. The results indicate that PBL is effective in enhancing students' mathematical communication skills, with 75% of the reviewed articles reporting significant improvements. These improvements were primarily achieved through discussion activities, problem-solving, and collaboration. Furthermore, learning motivation exhibits a positive correlation with mathematical communication ability, as students with higher motivation tend to demonstrate better communication skills. The findings of this study confirm that PBL can serve as an innovative solution to improve students' mathematical communication skills and learning motivation.
Efektivitas model pembelajaran auditory, intellectualy, repetition berbantuan e-modul etnostatika berbasis etnomatematika terhadap kemampuan numerasi siswa kelas VIII SMP
This study aims to test the effectiveness of the difference in the average numeracy ability of students taught by the Auditory, Intellectually, Repetition (AIR) learning model assisted by the ethnostatics e-module based on ethnomathematics with the direct learning model, and to determine the increase in students' numeracy ability before and after being taught using the AIR learning model assisted by ethnomathematics-based e-module. The research method used is quantitative, with a quasi-experimental design with a pre-test and post-test control design. This research was conducted at SMP Negeri 1 Wedarijaksa. The population of this study was 286 students. Sampling was carried out using a purposive sampling technique, namely classes VIII-A and VIII-C. Data analysis techniques used normality tests, homogeneity tests, N-Gain tests and Mann Whitney tests. Based on the results of the posttest of numeracy ability, it was found that the average value of numeracy ability of experimental class students who were given treatment using the AIR model assisted by ethnostatics e-module based on ethnomathematics was 81.45, higher than that of control class students who were given treatment using the direct learning model of 80.73, so it can be concluded that the average numeracy ability of students who were taught the AIR learning model assisted by ethnostatics e-module was better than that of students who were taught the direct learning model.
Penerapan metode radial basis function neural network dalam memprediksi curah hujan
North Tapanuli Regency is highly vulnerable to natural disasters such as floods and landslides due to high rainfall intensity and complex geographical conditions. To anticipate these risks, this study aims to predict rainfall using the Radial Basis Function Neural Network (RBFNN) method. The number of nodes in the input layerwas determined based on significant lags identified in the Partial Autocorrelation Function (PACF) plot. The hidden layerwas constructed using the K-Means clustering method to define cluster centers and standard deviations. Model performance was evaluated using the Root Mean Square Error (RMSE) metric. The results indicate that the optimal network structure is found in the 4-7-1 architecture, yielding an RMSE of 11.006. This model was then used to predict rainfall for the period from September 1 to December 31, 2024. The prediction results show that rainfall intensity tends to remain stable, ranging from 5 to 9 mm, with the highest value of 9.35 mm on September 1 and the lowest value of 5.40 mm on September 22. Based on these findings, the potential for natural disasters due to high rainfall during the forecast period is relatively low. The RBFNN model has proven effective for handling nonlinear meteorological data patterns, making it a valuable tool for a reference for further academic research in rainfall prediction and data clustering.
Inovasi media pembelajaran interaktif matematika berbantuan canva dalam meningkatkan motivasi belajar
Students' motivation to learn mathematics is relatively low, this is caused by the use of conventional learning methods and less interesting media, so that students are less active and have difficulty understanding abstract concepts, especially the Pythagorean theorem. This study aims to develop interactive learning media assisted by Canva to increase students' motivation to learn mathematics. This type of research is Research and Development (R&D) with the ADDIE development model consisting of five stages: Analysis, Design, Development, Implementation, and Evaluation. The subjects of this study were 28 students of class VIII A of SMP Negeri 4 Palopo. The instruments used included media and material validation sheets, learning motivation questionnaires before and after using the media, student practicality questionnaires, and interview guidelines. The validation results showed that the media was in the very valid category with a high percentage of experts. The practicality of the media was assessed as very practical by students, and the effectiveness of the media was proven through an increase in motivation scores on the post-test questionnaire. The final product was a website-based interactive learning media designed using Canva, equipped with material features, videos, quizzes, instructions, and developer profiles. This learning media is valid, practical, and effective in increasing students' learning motivation on the Pythagorean Theorem material.
Pengembangan aplikasi edukatif menggunakan Desmos dan Padlet pada Materi SPLDV
This study aims to develop a learning application based on Desmos and Padlet for the subject of Two-Variable Linear Equation Systems (SPLDV) to improve students' conceptual understanding through a Problem-Based Learning (PBL) approach. The main issue underlying this study is the lack of interactive and contextual learning media used in the SPLDV learning process at the junior high school level. The method used is Research and Development (R&D) with the ADDIE model, which includes the stages of analysis, design, development, implementation, and evaluation. In the analysis stage, needs were identified through questionnaires administered to teachers and students. The developed product was validated by three experts, resulting in an average validity score of 84.66%, which falls into the highly valid category. A pilot test was conducted with six eighth-grade students and showed a significant improvement between pretest and posttest scores. The evaluation indicated that the application supports student engagement visually, interactively, and is easy for teachers to use in the teaching process. The final results of the study showed that the integration of Desmos and Padlet in SPLDV learning not only enhances conceptual understanding but also encourages active student participation in discussions and problem-solving. This application has been proven to be valid, practical, and effective and is highly recommended for implementation in contextual mathematics learning at the junior high school level on a broad and sustainable basis.
Analisis peramalan data kekeringan lahan pertanian di kabupaten lamongan menggunakan metode Fuzzy Time Series-Markov Chain
The agricultural sector in Lamongan Regency is severely affected by the threat of drought, potentially affecting food production and farmers' welfare. This study aims to forecast the area of agricultural drought with a very severe category in Lamongan Regency using the Fuzzy Time Series-Markov Chain (FTS-MC) method. The data used includes the average drought area based on the processing of Landsat 8 imagery from 2020–2024, rainfall data, and historical drought data from the Regional Disaster Management Agency. The selection of the FTS-MC method is based on its strength in dealing with uncertain data and modeling drought condition transitions probabilistically. The forecasting results show that the pattern produced by FTS-MC closely follows the actual pattern, with good accuracy indicated by a MAPE value of 13.25%. The forecast result for January 2025 incerased 925,421.43 m². This finding is expected to serve as a reference for local governments and other stakeholders in planning drought mitigation, irrigation management, and more adaptive, data-driven food security strategies.
Kesalahan siswa sekolah dasar dalam penyelesaian soal cerita pecahan: Tinjauan prosedur Newman berdasarkan gaya belajar
This research aims to analyze various types of mistakes made by 4th grade students in class A at SDIT Al Ibrohimi during the process of solving mathematical story problems on the topic of fractions utilizing the Newman procedure, while reviewing their learning styles. The procedure includes five stages, namely Reading, Comprehension, Transformation, Process Skill, and Encoding. This research employs a descriptive qualitative approach, involving 25 students as subjects selected using simple random sampling technique to provide equal opportunities for all chosen students to be part of the sample. Data was collected through the administration of tests in the form of story problems, distribution of learning style questionnaires, conducting interviews, with instruments that have been validated by four experts. Data analysis was conducted through stages of reduction, data presentation, and drawing a conclusion. Based on the research findings, students with visual learning styles tend to make mistakes in the comprehension stage of problem understanding. Auditory learners not only make mistakes in comprehension but also in converting word problems into mathematical forms (transformation). Meanwhile, students with kinesthetic learning styles tend to make mistakes throughout the entire problem-solving procedure. The causes include limitations in understanding the material, forgetfulness, difficulty in converting the form of the problem, and a lack of understanding in following problem-solving procedures. This study indicates that teachers need to adjust their teaching strategies to accommodate all learning styles of students and to frequently provide exercises that emphasize conceptual understanding, thus minimizing errors in solving mathematical conclusion problems.
Keywords: Newman Procedure, word problems, fractions, learning styles
Kata kunci: Prosedur Newman, soal cerita, pecahan, gaya belajar