Jurnal Daya Matematis
Daya Matematis: Jurnal Inovasi Pendidikan Matematika is a journal that provides an authoritative source of scientific information for researchers and academics, research institutions, government agencies, and teacher education.
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<![CDATA[Analysis of Diarrheal Disease Transmission in Bandung City Using the SIS Mathematical Model. ]]>
<![CDATA[Ulfa, Rezky Maya]]>;
<![CDATA[Shaumi, Nurina Fadlila]]>;
<![CDATA[Nuraini, Nuning]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.72375
<![CDATA[Diarrhea remains a public health issue in developing countries around the world. It is categorized as an environmentally-based disease and occurs in nearly all geographic regions globally. The purpose of this study is to apply mathematical modeling of the spread of diarrhea in Bandung City using the SIS model, then to model the relationship between the number of rivers and the quantity of E. coli in each district in Bandung City with the number of diarrhea cases, as well as to analyze the influence of river presence and E. coli quantity in each district on the number of diarrhea cases in Bandung City. The model development began by creating a flow diagram of the spread of diarrhea using the SIS model. The results revealed an equilibrium point, specifically the endemic equilibrium point. The basic reproduction ratio in each district showed values closely aligned with mortality rates, indicating that mortality rates from the disease could serve as a useful indicator for predicting transmission rates and the impact of diarrhea within the population. The higher the mortality rate, the lower the likelihood of disease transmission, and vice versa.]]>
<![CDATA[Analysis of Mathematical Problem Solving Ability on Circle Material Class V Madrasah Ibtidiyah ]]>
<![CDATA[Khadijah, Siti]]>;
<![CDATA[Siregar, Nurdiana]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.74253
<![CDATA[(The background in this study is the ability to solve the problem msalah students in mis Nurul Yaqin still classified as sufficient, students are not able to understand mathematical concepts. In solving the problem students still forget the steps of solving it. (2) The purpose of this study is to analyze the problem-solving ability of Class V students (3) The research method used is qualitative analysis by sampling using purposive sampling technique. Data collection techniques used triangulation techniques that are matched with observations, interviews and documentation of student test results. (4)The results of the study were seen based on the results of students ' answers that high Category problem-solving skills are able to solve problems well followed through the settlement steps of understanding the problem, drawing up a settlement plan, solving the problem, and re-examine. Then the ability to solve problems in the medium category is still in sufficient condition, less in understanding the problem but can solve the problem, they are only guided by the formula alone. While the ability to solve the problem of low category is still in poor condition, from all steps of problem solving need more teacher guidance. (5) The results of this study, teachers should play a role in guiding students, teachers should instill in students the process of problem solving properly and correctly. Teachers should Group students according to student abilities, student learning needs or the learning style of each student to make it easier to guide according to their respective abilities. ]]>
<![CDATA[Integration of Mathematics Contextual Values in PGSD Students' Picture Story Project ]]>
<![CDATA[Prihastari, Ema Butsi]]>;
<![CDATA[Rizkasari, Elinda]]>;
<![CDATA[Novit, Trio Adi]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.75564
<![CDATA[This study aims to describe the integration of contextual values in mathematics teaching materials through a pictorial story project developed by PGSD students. This study uses a descriptive qualitative approach with the subject of 30 6th semester students who took the Mathematics Teaching Material Development course. Data were collected through observation of illustrated story products and semi-structured interviews. The results of observations showed that 76% of students' work showed a high integration of contextual values, such as honesty, responsibility, and cooperation, in the context of students' daily lives. In-depth interviews revealed that students were able to relate mathematical concepts to character values creatively, although some experienced difficulties in composing a narrative that was proportional to the material. The project also encourages students' pedagogic and reflective awareness of the importance of contextual education. These findings show that pictorial story media can be an innovative alternative in the development of mathematics teaching materials that are not only cognitive, but also affective. This study recommends strengthening value integration training in teaching media design as well as further implementation testing at the elementary school level.]]>
<![CDATA[The Effect of the Problem-Based Learning Model on Mathematical Communication Skills and Learning Motivation of Eighth-Grade Students at MTs Negeri 2 Medan ]]>
<![CDATA[Pakpahan, Aida Fitri Harun]]>;
<![CDATA[Surya, Edy]]>;
<![CDATA[Khairani, Nerli]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.74604
<![CDATA[The purpose of this study is to determine: (1) Whether there is an effect of the Problem-Based Learning model on students' mathematical communication skills. (2) Whether there is an interaction between the Problem-Based Learning model and students' initial mathematical ability (KAM) on their mathematical communication skills. (3) Whether there is an effect of the Problem-Based Learning model on students' learning motivation. (4) Whether there is an interaction between the Problem-Based Learning model and students' initial mathematical ability (KAM) on their learning motivation. This study is a quasi-experimental design. The population in this study was all students at MTs Negeri 2 Medan. Then, two classes were randomly selected, class VIII-D (30 students) and class VIII-E (30 students). The experimental class was given the Problem-Based Learning model treatment, and the control class was given the usual learning treatment. The instruments used consisted of: (1) a mathematical communication ability test, and (2) a student learning motivation questionnaire. These instruments were found to meet validity requirements, as well as reliability coefficients for mathematical communication ability and the learning motivation questionnaire. Data analysis was conducted using a two-way ANOVA. The results of the study indicate that (1) There is an effect of the Problem-Based Learning model on students' mathematical communication ability. (2) There is an interaction between the learning model and initial mathematical ability on students' mathematical communication skills. (3) There is an effect of the Problem-Based Learning model on students' learning motivation. (4) There is an interaction between the learning model and initial mathematical ability on students' learning motivation.]]>
<![CDATA[Optimization of Tofu Raw Material Inventory Using the Dynamic Lot Sizing Method ]]>
<![CDATA[Ningsi, Ria Sagita]]>;
<![CDATA[Cipta, Hendra]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.74643
<![CDATA[The purpose of this study was to determine the lot size of tofu raw materials orders, the total cost of factory inventory before and after implementing inventory control using the Wagner-Within Algorithm technique on the Dynamic Lot Sizing method. With demand forecasting on the POM QM aplication consisting of Moving Average, Weighted Moving Average, and Exponential Smoothing. Based on the result obtained, the total lot size of tofu raw material orders without implementing inventory control of 15.800 kilos per year. The total cost is Rp. 189.656.040 and is more optimal when compared to the factory system, which is Rp. 208.256.040 so that the factory can save costs of Rp. 18.600.000.]]>
<![CDATA[The Impact of the Think-Pair-Share (TPS) Cooperative Learning Model on Students' Engagement and Mathematics Achievement in Powers and Roots Topics ]]>
<![CDATA[Djam'an, Nurwati]]>;
<![CDATA[Nasir, Nur Anisa]]>;
<![CDATA[Sahid, Sahid]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.71975
<![CDATA[This study employs a pre-experimental quantitative research design using a one-group pretest-posttest approach to examine the impact of the Think-Pair-Share (TPS) cooperative learning model on students' engagement and mathematics learning outcomes. The study population consists of Class IX students at SMP Negeri 1 Bontonompo during the odd semester of the 2024/2025 academic year. The sample was selected using cluster random sampling. Data was collected through three instruments: A student engagement questionnaire, A mathematics learning outcome test, and an observation sheet on lesson implementation. The data was analyzed using descriptive and inferential statistical methods. The descriptive analysis revealed the following key findings: The implementation of the TPS model was highly effective, with an application rate of 91.44%. Student engagement improved, as indicated by an increase in average pretest and posttest scores from 173.76 to 193.04, categorized as a moderate improvement. Mathematics learning outcomes significantly increased, with average pretest and posttest scores rising from 8.88 to 79.20. The average normalized gain was 0.77, and 80% of students achieved mastery learning. Inferential statistical analysis confirmed that the Think-Pair-Share cooperative learning model positively impacts student engagement and mathematics learning outcomes of powers and roots topic for Class IX students at SMP Negeri 1 Bontonompo]]>
<![CDATA[Analysis of Textbooks on Trigonometric Identity Equations in the 1975 Curriculum, Merdeka Curriculum, and the 2nd Blitzer Trigonometry Book ]]>
<![CDATA[Ely Susanti, Ely]]>;
<![CDATA[Hiltrimartin, Cecil]]>;
<![CDATA[Okta, Miko]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.72889
<![CDATA[This study aims to analyze the presentation of trigonometric identities in three textbooks used in different curricula, namely Mathematics 7 for Senior High School (1975 Curriculum), Mathematics for Senior High School/Vocational High School Grade XI Independent Curriculum (2022), and Trigonometry (2nd Edition) by Blitzer (2018). The research method uses content analysis of facts, concepts, principles, and examples of questions and problem-solving questions in these books. The results of the analysis show differences in presentation approaches, where the 1975 Curriculum book presents material in a simple but less systematic manner, the Independent Curriculum combines context but is less consistent, and the Blitzer book presents comprehensive material with a focus on real-world applications. Analysis of questions based on cognitive levels and the PISA framework places the Blitzer book as superior in terms of the variety and depth of questions. These findings are important as material for evaluating and developing textbooks to improve understanding and competitiveness of mathematics education at national and international levels.]]>
<![CDATA[The Effect of the Discovery Learning Model Assisted by Kahoot on the Mathematical Critical Thinking Ability of Class X Students of SMAN 1 Utan ]]>
<![CDATA[Hatimah, Husnul]]>;
<![CDATA[Azmi, Syahrul]]>;
<![CDATA[Kurniawan, Eka]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.75714
<![CDATA[The purpose of this study is to ascertain how the Discovery Learning learning paradigm, with Kahoot's assistance, affects the mathematical critical thinking abilities of SMAN 1 Utan class X pupils throughout the 2024/2025 academic year. This type of research is a quasi-experimental with a Post-test Only Control Group Design, involving two classes, namely the experimental class (X-6) and the control class (X-5). While the control class employs a traditional learning model, the experimental class uses the Discovery Learning learning paradigm with Kahoot's help. Post-test questions on critical thinking abilities and observation sheets for learning implementation serve as the research tools. According to the findings, the experimental class's average post-test score was 78.27, which was higher than the control class's average score of 64.89. A statistically significant difference between the two classes was revealed by the Mann-Whitney U test. With an effectiveness of 78.93%, the effect size (Cohen's d) of 0.80407 suggests a moderate effect. The experimental class is primarily in the very high category on the interpretation and evaluation indicators, while the control class is primarily in the high category on the analysis indicator and low on the inference indicator, according to the distribution of critical thinking ability categories by indicator. These results indicate that the use of Kahoot-assisted Discovery Learning can influence students' critical thinking abilities overall.]]>
<![CDATA[The Influence of the Montessori Approach on Mathematical Problem-Solving Skills Among Fourth-Grade Elementary Students ]]>
<![CDATA[Hidayat, Resti Resti]]>;
<![CDATA[Supriadi, Supriadi]]>;
<![CDATA[Hendriawan, Dedi]]>;
<![CDATA[Fajriani, Putri]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.76010
<![CDATA[Problem-solving ability is a higher-order thinking skill essential to develop from the elementary school level. However, mathematics instruction in elementary schools remains predominantly conventional and has not yet optimally fostered students' critical thinking and systematic problem-solving skills. This study aims to analyze the effect of the Montessori approach on the mathematical problem-solving abilities of fourth-grade elementary students. This research employed a quantitative approach with a quasi-experimental design, specifically a non-equivalent control group pretest-post test design. The sample consisted of 60 students, divided into 30 students in the experimental group and 30 in the control group. The results of the paired sample t-test indicated a significant improvement in the experimental group, with a mean pretest score of 20.3 and a post-test score of 30.7, along with a significant value of 0.000 (p < 0.05). Furthermore, the Mann–Whitney U test on the gain scores yielded a significance value of 0.000, demonstrating a statistically significant difference in the improvement of problem-solving abilities between the experimental and control groups. The findings confirm that the Montessori approach is effective in enhancing students' problem-solving skills in mathematics learning.]]>
<![CDATA[Ethnomathematic Analysis: Geometry in Silk Woven Sarongs ]]>
<![CDATA[Quraisy, Andi]]>;
<![CDATA[Nursakiah, Nursakiah]]>;
<![CDATA[Mutmainnah, Mutmainnah]]>
<![CDATA[ Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 2 (2025): Juli ]]>
Publisher : <![CDATA[Universitas Negeri Makassar ]]>
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DOI: 10.26858/jdm.v13i2.76283
<![CDATA[This study aims to explore geometric concepts in the motifs of Wajo silk woven sarongs (lipa' sabbe) through an ethnomathematics approach. The method used is exploratory with an ethnographic approach to reveal the mathematical values contained in local cultural heritage. The results of the study show that woven sarong motifs contain various geometric concepts such as symmetry (reflection, rotation), transformation (translation), and basic geometric shapes (squares, rhombuses, triangles). Each sarong motif represents mathematical principles that can be explained through the Cartesian coordinate system and isometric transformations. This study demonstrates that traditional weaving is not only an expression of cultural art but can also serve as an educational medium in contextual mathematics learning based on local culture. The integration of ethnomathematics in education is expected to enhance students' understanding of abstract mathematical concepts and foster appreciation for regional culture.]]>
