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Disciplinary character is an attitude and feeling of being obedient and obedient to values ​​that are believed to be one's responsibility. Therefore, teachers try to develop students' disciplined character, one of which is by applying the role-playing method. This research aims to develop students' disciplined character through role-playing methods on Pancasila values. This researcher uses a qualitative method with the Classroom Action Research (PTK) type, which consists of 2 cycles and each cycle has 2 meetings. The data collection techniques are through observation, interviews and documentation. The research results obtained from the application of the role playing method in PPKN subjects on Pancasila values ​​for teachers in cycle I increased from 75.5% to cycle II 88.75%. The application of the role playing method in PPKN subjects regarding Pancasila values ​​to students in cycle I was 67.5% and cycle II was 93.75%. Meanwhile, student learning outcomes in the mathematics subject material flat shapes after implementing the picture and picture model increased with the average score in cycle I being 65% and cycle II being 85%.

Disciplinary character is an attitude and feeling of being obedient and obedient to values ​​that are believed to be one's responsibility. Therefore, teachers try to develop students' disciplined character, one of which is by applying the role-playing method. This research aims to develop students' disciplined character through role-playing methods on Pancasila values. This researcher uses a qualitative method with the Classroom Action Research (PTK) type, which consists of 2 cycles and each cycle has 2 meetings. The data collection techniques are through observation, interviews and documentation. The research results obtained from the application of the role playing method in PPKN subjects on Pancasila values ​​for teachers in cycle I increased from 75.5% to cycle II 88.75%. The application of the role playing method in PPKN subjects regarding Pancasila values ​​to students in cycle I was 67.5% and cycle II was 93.75%. Meanwhile, student learning outcomes in the mathematics subject material flat shapes after implementing the picture and picture model increased with the average score in cycle I being 65% and cycle II being 85%.

According to academic data, student math ability tests at MTSS PAB 5 Klambir Lima yield mixed results. There are students who understand math well, but there are also those who have difficulty understanding the mathematical concepts themselves. Math teachers at this school have difficulty designing lessons that can meet the needs of students with different levels of understanding. So, it is necessary to group student data to produce educational decision-making and improve learning effectiveness, such as through data mining. Data mining is a semi-automated process that uses machine learning techniques, mathematics, statistics, and artificial intelligence to identify and organize information contained in large databases. The process of finding information can be done by determining the decision rule based based on the level of student understanding in mathematics lessons using the Decision Tree Algorithm C4.5 method. The use of the Decision Tree algorithm C4.5 aims to make it easier to determine decision rules based on gender, Predicate, teacher teaching methods, student learning interest, and level of understanding. Based on the results of the study, it was found that if the teacher's teaching method is good, the predicate value is B, the student's learning interest is less interested, and the gender is male, then the student's level of understanding in mathematics lessons is not understood.

One effort to improve elementary school students' arithmetic (numeracy) skills is to use learning media in the form of an abacus. The abacus, also known as mental arithmetic, is a medium for developing thinking and calculating abilities in mathematics and is able to balance the abilities of the right and left brain. Therefore, SD 01 Ulak Karang teachers need to improve their skills in using the abacus, so that these skills can be mastered and provided to students well. The method of this activity includes basic level abacus training, namely (1) introducing body posture when using an abacus, (2) introducing the rules and how to operate/move the abacus beads, (3) introducing number notations represented by one or a group of abacus beads.  (4) introduce the technique of calculating addition and subtraction using an abacus and practice questions. Based on the results of this activity, the teachers at SDN 01 Ulak Karang Selatan are familiar with the technique of calculating with an abacus and can use the abacus to carry out addition and subtraction operations correctly and quickly. The teachers were very enthusiastic about being able to master all the techniques and calculation operations with the abacus.

The abacus is a traditional calculating tool from Southeast Asia such as China, Korea, Taiwan and Japan. According to Chen (2009), it is said that the abacus existed in Babylonia and China around 2400 BC and 300 BC. In education in Indonesia in the 1990s the abacus began to enter the form of arithmetic courses, after 700 years of disappearance. The impact of the abacus is amazing, a kindergarten child who masters mathematics can calculate faster than a calculator. The abacus succeeded in attracting the attention of mothers with small children, who then enrolled their children in abacus arithmetic courses. This program is very appropriate for children aged kindergarten to elementary school. The conditions that occurred in RW 01, Gedong Village, the proposing team found that there were still many children who had difficulty using addition, subtraction operations, or using the abacus. Parents don't even understand how to use the abacus in calculating. Maybe this is because there are no parents to teach their children, because the majority of children in RW 01 are from the lower middle class. To overcome the problems mentioned above, the solution offered in this community service is to provide socialization on abacus arithmetic media to parents of children in the RW 01 Gedong Village environment, in order to optimize children's potential, including: increasing the ability to calculate faster, balancing the use of left and right brain and optimizing it to achieve a level of analytical thinking and correct analytical thinking, training concentration thinking power, helping children to master other subjects, developing imagination so that children's creativity develops, and getting used to numbers makes children not I'm afraid of exact lessons

Most children are very unenthusiastic about learning mathematics. This service is carried out so that the children of the GMIT Logos Kilakawa Congregation are motivated so that the children are more enthusiastic in learning mathematics so that they are no longer afraid of mathematics and they don't even experience difficulties. The methods used are tutoring and playing. The result of this activity is that the children are very enthusiastic and want to learn more about mathematics.

The influence of early mathematics learning and learning motivation on student learning outcomes is very significant [1]. Students' numeracy literacy skills need to be supported by the ability to learn mathematics as early as possible. Advanced mathematics learning needs to be supported by good arithmetic skills. Every learning process is expected to produce good learning outcomes. Conventional mathematics learning is difficult for low-level students to understand. Guidebooks that are in accordance with the learning curriculum tend to present mathematical concepts that are textual. In order for mathematics learning to be more interesting for students, it is necessary to develop learning media that are easily accessible to students and educators. One application that can be used is interactive Powerpoint [2]. In this community service, a learning media about arithmetic was developed that underlies every logic of calculation in advanced mathematics. Assistance was given to students in grade III of elementary school, with the pretest method, presentation of material using interactive Powerpoint media, and posttest. The validation test of the learning media was carried out by educators by providing an average test result of 84.36%. The results of this community service state that arithmetic learning media using interactive Powerpoint can be used in grade III of elementary school.

Combinatorial optimization is a fundamental area in operations research and computer science, focusing on identifying optimal solutions from a finite set of possibilities. This study explores the integration of branch and bound methods with heuristic algorithms to address optimization problems in graph theory and discrete mathematics. Python was employed for algorithm implementation due to its flexibility and comprehensive computational libraries, enabling efficient data analysis and visualization. Several benchmark problems were examined, including the Traveling Salesman Problem (TSP), Minimum Spanning Tree (MST), and Graph Coloring. Simulations were conducted using datasets of varying sizes (small, medium, and large) to evaluate performance across different scales. The results demonstrate that the hybrid approach achieves a balance between solution quality and computational efficiency, outperforming brute-force methods in terms of speed while maintaining near-optimal accuracy. Tabulated results and graphical comparisons highlight the reduction in computation time and improved scalability of the proposed method. The findings suggest that combining systematic search strategies with heuristics offers a practical and effective framework for solving complex combinatorial optimization problems. Recommendations for future research include testing scalability with larger datasets, incorporating advanced metaheuristics, and applying the approach to real-world domains such as logistics and network design.

This research aims to determine the learning independence of class III students at SDN 167 Pekanbaru in mathematics learning before and after using inquiry strategies. This research is classroom action research using the Kemmis and Taggart method, namely (plan, action, observation and reflection). This research consists of 2 cycles, each with 2 meetings. Data collection techniques use observation, field notes and documentation. Data analysis uses quantitative and qualitative. Research results: In the Pre-Cycle, most students were in the Less Independent category. Entering Cycle I, there is a clear improvement. The number of students in the Sufficiently Independent category has increased, but there are still students in the Less Independent category. In Cycle II, the most striking changes occurred. The number of students in the Very Independent category increased significantly. This shows that the majority of students now have a high level of independence, with great achievements in increasing their independence compared to the previous cycle.

The transformation of affirmative action policies in the digital era serves as a strategic step to improve the Gender Empowerment Index (GEM) and accelerate gender equality in Indonesia. These policies focus on enhancing women's access to economic, political, and educational sectors, leveraging opportunities provided by digital technology. However, several challenges remain, such as limited internet access, low digital literacy, patriarchal social norms, and underrepresentation of women in STEM (Science, Technology, Engineering, and Mathematics) sectors. The government has implemented several initiatives, including a 30% quota for women's representation in parliament, empowering women-owned MSMEs through Kredit Usaha Rakyat (KUR), and offering scholarships to increase women's participation in STEM and technology fields. In addition, affirmative policies within state-owned enterprises (BUMN) aim to promote female leadership in strategic positions. Despite some progress, the gender gap in the digital economy and the risk of gender-based violence online remain significant issues that require further attention.Policy recommendations include improving access to technology and digital literacy for women, providing incentives for companies that promote gender equality, and strengthening protection against online gender-based violence. Collaboration between the government, private sector, and civil society is essential to ensure the successful implementation of affirmative action policies in the digital era. This transformation is expected not only to enhance the IDG but also to empower women to actively contribute to inclusive and sustainable economic development.

One of the causes of low student learning outcomes is the use of learning models that are monotonous and tend to be boring, so innovation in learning is needed. The integration of technology into the education and learning process reflects an innovative effort. One model that can make it easier for students to understand and can support technological developments is the blended learning model. Quipper School is an online learning platform that can be used in the blended learning model. This research aims to determine whether or not there is an influence of the blended learning model using Quipper School on the mathematics learning outcomes of class XI MA Nurul Jadid students. This research is quantitative research with a quasi experimental type. The subjects in this research were class XI MIPA 2, totaling 23 people as the experimental class and class XI MIPA 4, totaling 23 people as the control class. Based on the results of the Mann-Whitney U Test, it was found that Asymp. Sig. (2-tailed) of 0.000 is smaller than 0.05, meaning that  is rejected and  is accepted. Thus, it can be concluded that there is a significant influence from the blended learning model using Quipper School on the mathematics learning outcomes of class XI MA Nurul Jadid students.

Mathematics is a universal science that underlies the development of modern technology, plays an important role in various scientific disciplines, and human thinking abilities. The view that mathematics is a science that trains thinking. The Creative Problem Solving learning model is a learning model that focuses on teaching and Problem Solving skills. Digital teaching materials are use digital devices, such as computers, smartphones. The aim of this research is to see the validity, practicality and effectiveness of the e-module being developed. This teaching material development model uses the ADDIE model. This research was carried out at SMP Negeri 21 Medan which is located on Jl. Rampe Raya flower. The time for the panel research is the even semester of the 2023/2024 academic year. The subjects of this research were class VII students at SMP Negeri 21 Medan. Meanwhile, the object of this research is learning media in the form of e-modules using flipbooks based on Creative Problem Solving. The e-module was declared very valid with a score of 3.56 and was categorized as very feasible. The e-module was declared practical with a percentage of 92.67% and was categorized as very practical. The e-module was declared effective by achieving Problem Solving indicators in indicators 1, 2, 3 and 4 with 65% of students completing the learning. The achievement of classical student indicators has met 65% of students who took part in learning with a score of 75. And there was a significant increase in indicators 1, 2, 3, and 4.

The drill method is serious repetitive activities do the same thing to strengthen or hone skills and make it permanent. The aim of this research is 1) To find out how to apply the drill method in mathematics lessons in class 4 at SDN 039 Air Terbit, 2) To find out whether the drill method is able to overcome students’ difficulties in understanding mathematics lessons, 3) To increase students’ learning motivation by applying the drill method in mathematics lessons in class 4 at SDN 039 Air Terbit. The method in this research uses classroom action research.. PTK is an approach to improving education through change by encouraging teachers to think about ttheir own practice so that they are critical of these actors an teachers want to change them. The results of this research are that students’ learning motivation is increasing. This can be seen from the results of the initial test. Learning engagement increased from 30% to 45% at the end of cycle 1 test and increased again at the end of cycle 2 test to 80%.  So from the test result above it can be concluded that learning using the drill method can increase students’ learning motivation in mathematics lessons, the material on operations for calculating fractions can be seen from the increased learning result, so student motivation also increases.

This research aims to determine the influence of learning styles on students' mathematical problem solving abilities. This research was carried out at MAS Al-Falah Klender. The method used is an ex post facto survey method with random sampling technique. The population in this study were class Data were collected using tests and analyzed by one way ANOVA. The results of this research show that 1) students' learning styles influence their mathematical problem solving abilities. 2) there is no significant difference between students' mathematical problem solving abilities with visual and auditory learning styles. 3) there is a significant difference between the mathematical problem solving abilities of students with kinesthetic and visual learning styles. 4) there is a significant difference between the mathematical problem solving abilities of students with kinesthetic and auditory learning styles.

This Research Is Motivated By Students' Low Understanding Of Mathematical Concepts Which Is Caused By The Learning Process Not Optimizing The Use Of Media When Learning Takes Place In Understanding The Concepts Of Learning Material And Not Giving Students Opportunities To Participate In Learning. This Research Aims To Improve Students' Understanding Of Mathematical Concepts Multiplication Pocket Media Is Able To Provide Details In The Form Of Existing Images, So That Students Are Able To Remember Them Better. Understanding The Concept Of Multiplication Calculation Operations. First, Restate The Concepts That Have Been Studied With The Following Example Questions. 5 X 4 = 4 + 4 + 4 + 4 + 4= 20. Most Students' Work Process Is Not Appropriate Because Students Do Not Re-Express Their Spelling Concepts Directly In The Results. Second, Classifying Objects Based On Mathematical Concepts.

The recurring issue in the education sector is the low interest in learning and the difficulties children face in learning at school, particularly in Mathematics. These two aspects are crucial to address and minimize as they significantly impact students' learning outcomes. This study aims to identify the factors that influence children's interest in learning and the emergence of difficulties in learning Mathematics at the elementary school level. This research employs the Systematic Literature Review (SLR) method. Data were collected through the documentation of all articles related to interest and difficulties in learning Mathematics at the elementary school level from 2019-2023. Subsequently, the researchers reviewed these articles comprehensively. The articles used in this study include both national and international journal articles. The research findings indicate that there are two factors influencing interest and difficulties in learning Mathematics: internal factors (factors within the students) and external factors (environmental factors).

Students need to have mathematical problem-solving skills to solve mathematical problems both in school and in real life. But in reality, students' mathematical problem-solving skills are still low. This study aims to analyze students' mathematical solving abilities from the perspective of gender differences, so that teachers can find the right solutions to improve students' abilities. This research is a qualitative research. The instruments used in this study are test questions and interview guidelines. The subjects of this study were three students taken from 20 students in grade VIII MTs Azzainiyah II. The subject consists of one student representing each of the high, medium, and low abilities. The results of the study showed that the mathematical solving ability of female students was better than that of male students. In the group of high-ability students, female students can meet all four indicators of the mathematical problem-solving stage, while male students can only meet the three indicators of the mathematical problem-solving stage. In the group of moderate-ability students, female students can meet three indicators of the mathematical problem-solving stage, while male students can only meet two indicators of the mathematical problem-solving stage. In the group of low-ability students, female students can meet two indicators of the mathematical problem-solving stage, while male students can only meet one indicator of the mathematical problem-solving stage.

This research aims to determine the effect of peer teaching learning methods on students' cognitive learning outcomes in mathematics subjects in class V at SDN 167 Pekanbaru. The method used in this research is a quasi-experimental method with the dependent variable being student learning outcomes, the independent variable being the Peer Teaching method. Research was carried out through planning, action implementation, observation and evaluation stages. The subjects of this research were determined using purposive sampling, namely class Vb SDN 167 Pekanbaru, totaling 30 people. Data was collected using student activity observation sheets and knowledge tests. The collected data was analyzed using quantitative analysis. The results of the research show that the peer teaching learning method can influence the cognitive learning outcomes of class V students at SDN 167 Pekanbaru in Mathematics learning by 71.69%, namely in the high category G > 70%

Some students feel that mathematics is unnecessary, resulting in their interest in learning being low and learning outcomes also being low. To overcome this, one approach that can be taken is experiential learning. This approach is based on four phases, namely real experience, reflective observation, abstract conceptual, and active experimentation. The four phases involve students in the learning process through acting, reflecting, thinking and applying. The aim of this research is to describe the learning process carried out using an experiential learning approach to trigonometry material to improve student learning outcomes. The research was conducted on 35 class X students. The data collection methods used were tests and field notes. The research results show an increase in student learning outcomes in three aspects, namely student learning completeness which reaches a score of more than or equal to 75, students' activeness in asking questions, arguing and working together in groups, and students' enthusiasm in taking tests given by the teacher. In conclusion, the application of experiential learning in class X trigonometry material can improve student learning outcomes.  

This study develops a Decision Support System (DSS) for selecting outstanding students at SDN Kedunglumbu using the Simple Additive Weighting (SAW) method. The main goal of this DSS is to help the school determine outstanding students more objectively and efficiently. The SAW method was chosen for its ability to provide weighted sums of relevant criteria, ensuring accurate and fair decisions. The system development follows a waterfall approach, with structured stages from planning to implementation. The evaluation criteria include PPKN, Indonesian Language, Science, Social Studies, and Mathematics, with seven students as the evaluated alternatives. The implementation of the DSS successfully displays information about outstanding students clearly, with Natasha Cahya Putri Ayu selected as the outstanding student with the highest preference score of 0.786. System testing using the blackbox testing method confirms that the system operates as expected, and calculations using the SAW method are consistent with manual calculations. Overall, the developed DSS successfully facilitates the selection process of outstanding students efficiently and objectively, while the SAW method proves effective in providing reliable results and supporting better decision-making in the educational environment.