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Math phobia is a psychological disorder characterized by excessive fear of mathematical concepts or activities, which hinders students' learning process. This study aims to explore the use of the abacus method as an intervention in improving mental arithmetic and reducing math phobia in elementary school students. The abacus method, which has been proven effective in improving concentration and mental arithmetic skills, is integrated into learning to provide an interactive and fun learning experience.  This study used a descriptive qualitative method involving 15 students and the third grade teacher of SDN 19 Tarung-Tarung, and used data collection techniques in the form of observation, interviews, and documentation. Data analysis used the Miles & Huberman research model. The results showed a significant increase in mental arithmetic skills and a decrease in students' anxiety levels in math subjects, which had a positive impact on students' learning motivation. The application of the abacus method can be an alternative strategy in designing more effective mathematics learning interventions to overcome math phobia.

This research aims to determine the implementation of the Missouri Mathematics Project (MMP) learning model and the influence of the Missouri Mathematics Project (MMP) learning model on the concept understanding ability of class II MI Miftahul Huda students in the 2024/2025 academic year. The method used in this research is an experimental method with a quasi-experimental type. The design in this research is a nonequivalent control group design. This research design involved two classes, the experimental class, namely class II A using the missouri mathematics project learning model and control class II C using the conventional learning model. Data collection techniques use the results of concept understanding tests. Based on the results of research on the Independent Sample T-test which shows that the significance (2-tailed) is 0.000 < 0.05, which means less than 0.05, so H0 is rejected and Ha is accepted, which means there is an influence of the missouri mathematics project learning model on understanding ability. MI Miftahul Huda class II flat shape concept.    

Understanding fraction concepts remains one of the biggest challenges in elementary mathematics education. Many students struggle with grasping fundamental fraction concepts, performing calculations, and applying them in problem-solving contexts. This study aims to analyze various factors contributing to students' difficulties in understanding fractions using a systematic approach Systematic Literature Review (SLR). Data were collected from relevant scholarly articles published between 2020 and 2025. The findings indicate that the primary difficulties students face in understanding fractions stem from a lack of conceptual comprehension, weak operational skills, and challenges in converting word problems into mathematical models. Additionally, low learning motivation and limited teaching method variations also contribute to students' struggles with fraction concepts.

This study aims to analyze the effectiveness of ChatGPT as a tool to help students complete academic assignments. Using a quantitative descriptive method, this study involved 150 6th semester students of the Mathematics Education Study Program selected through a simple random sampling technique. Data were collected through an online questionnaire that measured the intensity of ChatGPT use, ease of understanding the material, and its impact on learning outcomes. The results showed that the majority of students felt helped by the use of ChatGPT, especially in compiling essay assignments, understanding complex academic concepts, and increasing self-confidence in solving math problems. However, it was found that excessive use has the potential to reduce learning motivation if students rely too much on instant answers. Therefore, wise use of ChatGPT and integration with conventional learning methods is highly recommended so that students continue to develop critical thinking skills and independence in learning.

Access to education that is close and affordable is a major obstacle in Patane II Village, Access to education that is close and affordable is a major obstacle in Patane II Village, Porsea District, Toba Regency. Because there are no schools in the area, children have to go to other villages to study, which has an impact on their physical condition, study time, and safety. Excessive use of electronic devices also has a negative impact on children's learning efforts. The purpose of this study is to analyze the challenges of education in the area and offer community-based solutions involving the government, community, and the use of technology. This study identifies various approaches to tutoring and research related to children's schools. The qualitative methods used are direct observation and interviews. The results of the study indicate that community-based solutions can effectively and sustainably improve access to education. Through the Student Service Practice Lecture Program (KPPM), children's interest in education has increased, especially in mathematics and English. In addition, students' social interactions with children help them reduce their dependence on electronic devices and increase awareness of the importance of education. Further collaboration is needed between the government, community, and educational institutions to achieve long-term goals, such as further school construction, improving teacher quality, and monitoring the use of electronic devices to increase children's learning opportunities.

Teachers in education play a significant role in the quality of classroom learning. Although teachers are not the only factor influencing educational success, they are an essential component of the overall educational process. This study aims to assist teachers in improving basic literacy and STEAM (Science, Technology, Engineering, Art, and Mathematics) skills in early childhood education at the RA Al-Mahir Foundation. The research seeks to explore the improvement of basic literacy and STEAM in early childhood learning, the stages and implementation of these improvements, and the challenges teachers face in enhancing literacy and STEAM at the foundation. The subjects of this study were classroom teachers and school principals. This research adopts a descriptive qualitative approach, collecting data through observation, interviews, and documentation. The results show that there are two key aspects: first, teacher performance in improving basic literacy and STEAM at the RA Al-Mahir Foundation has been excellent, particularly through the use of methods like reading, singing, and experimental play. Second, the activities aimed at improving literacy and STEAM have been effective and well implemented. The learning process at the RA Al-Mahir Foundation is running smoothly, with teachers successfully increasing children's interest in literacy and STEAM. This includes improved reading interest, focus during reading and experimental activities, politeness in the learning process, and good behavior, all contributing to a positive learning environment.

The community service aims to improve the understanding of grade 1 students of SDN 173635 Parparean II on the concept of addition through the use of diagram tables 1-9. This service activity was carried out by KPPM students of HKBP Nommensen University Medan in Parparean II village, Porsea District, Toba Regency. The methods used in this service are observation and evaluation test. The results of the service showed that the use of diagrammatic tables improved students understanding of the concept of addition. Students stated that the use of diagrammatic tables helped them understand the material better. By looking at the numbers in the 1-9 table, they can easily follow the addition steps and understand the relationship between numbers. This shows that the visual aids such as diagrammatic tables are very effective in supporting the teaching and learning process, especially for basic mathematics concepts that are often a challenge for students and the use of this learning method also creates a more interesting and interactive classroom atmosphere. Through this service can make an important contribution in improving the quality of education. The use of table diagrams can be expanded in various school, so that they can understand how to implement this method into the learning process in the future.

This study aims to determine the effect of emotional intelligence on student learning outcomes in class X mathematics at Muhammadiyah Maumere Private High School. The population of this study were students of class X IPA I and IPA 2, totaling 39 students. The sample in this study consisted of 39 students. Data collection was carried out by distributing questionnaires related to emotional intelligence on the results of learning mathematics in class X SMA Muhammadiyah Maumere Private High School Based on the results of the analysis with a significant level of 5%, it can be concluded (1) There is a significant effect of emotional intelligence for the experimental class on mathematics learning outcomes (2) There is an insignificant effect of emotional intelligence for the control class on mathematics learning outcomes for Muhammadiyah Maumere Private High School students.

This type of research is an experimental research involving two experimental groups. The sample in this study was class XII.  1 as experimental class 1 and class XII. 2 as experimental class 2. Data were collected using questionnaires, tests, and observation sheets. The data were then analyzed descriptively and two-way analysis of variance (ANOVA) and continued with a post hoc test. The results of the study showed that (1) the average mathematics learning achievement of students using the Talk Stick cooperative learning model was 88.7 out of an ideal value of 100 with a very high category, (2) the average mathematics learning achievement of students using the Example Non-Example cooperative learning model was 87.6 out of an ideal value of 100 with a very high category, (3) there was a significant difference in mathematics learning achievement between students with high, medium, and low learning motivation with a significance of 0.001, and (4) there was no interaction between the cooperative learning model and motivation on mathematics learning achievement with a significance of 0.306.

This study aims to determine the achievement of students‘ critical thinking skills in solving HOTS-based Mathematics problems in terms of students’ learning styles at SD Negeri Gembira, Nangahale Village. This type of descriptive qualitative research aims to present in-depth information about a subject. The research was conducted at SD Negeri Gembira Desa Nangahale in even semester on 10 April-17 May 2023. Primary data sources were obtained from observation. While secondary data sources were obtained from tests, questionnaires, and interviews. Data collection techniques using tests, learning style questionnaires and interviews. Data analysis in this study used miles and huberman model data analysis, namely data presentation, data reduction and conclusion drawing. The results showed that subjects with visual learning styles revealed that the thinking process on each indicator of critical thinking ability smoothly so that the subject could solve the problem correctly. Subjects with auditory learning styles reveal well the critical thinking process on each indicator of critical thinking ability.

This research aims to find out how to develop animated video learning media to improve the mathematical problem solving abilities of class VI students. This research is based on several problems, namely students who do not understand the discussion of learning material because mathematics is considered boring and it is difficult to memorize formulas. This made students unable to solve problems in the learning process. This research used research method and development using 4D research model. The sample of this research consisted of 25 students, with the first step not using animated videos and the second step using animated videos. The research instruments used in this research were tests (essays) and questionnaires. The research results showed that the feasibility level was 92% in the "very valid" category, the practicality level was 92% in the "very practical" category, and the effectiveness level was 88.52% in the "effective" category. These results can also be seen from the pretest with an average value of 34 and posttest with an average value of 92, so the average N-Gain Score was 88.52%. So, it can be concluded that the development of animated video learning media can improve the Mathematical problem solving abilities of 6th Grade of Elementary School students.

This community service aims to improve the numeracy skills of elementary school students in Marendal Village through contextual mathematics-based training. The methods used in this program are lectures, discussions, and practice questions based on everyday problems. The evaluation results show an increase in students' understanding of basic mathematical concepts and an increase in their learning motivation. This activity is expected to be a model for numeracy literacy improvement programs in other areas.

This study aims to (1) describe the characteristics of e-LKPD based on realistic mathematics education on system of linear equations with three variables oriented towards critical thinking skills and self-efficacy of vocational school students, (2) describe the feasibility of e-LKPD based on realistic mathematics education on system of linear equations with three variables oriented towards critical thinking skills and self-efficacy of vocational school students in terms of validity,  practicality and effectiveness. This type of research is research and development (Research and Development) with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The research subjects were 34 students of class X TKP SMKN 2 Tarakan. In this research, One Group Pretest - Posttest Design was used. The research instruments used were validation sheets, practicality assessment sheets by teachers and students, learning implementation observation sheets, critical thinking ability tests and self-efficacy questionnaires. The results of the research show: (1) the e-LKPD developed contains characteristics found in the RME approach to the material of on system of linear equations with three variables oriented towards critical thinking skills and self-efficacy. The characteristics contained in RME-based e-LKPD include integrated learning, use of context, mathematization and construction processes and interactivity. (2) the RME-based e-LKPD developed meets the criteria for feasibility in terms of validity aspects with a percentage of feasibility according to material experts of 93.4% and media experts of 98.9% with the validation result criteria being very feasible; practicality with a very practical category based on the results of student and teacher responses; effectiveness based on critical thinking skills with classical completeness of students reaching 82.4%, the results of the T-test paired samples-test with a significance level of 5% obtained that there was an influence on students' critical thinking skills after treatment using RME-based e-LKPD, the N-Gain result was 0.73 with a high category, and the effectiveness of e-LKPD on self-efficacy with an increase in each self-efficacy indicator,  the N-Gain result was 0.3 in the moderate category, and the results of the Wilcoxon test on self-efficacy data with a significance level of 5%, it was obtained that there was an influence on students' self-efficacy after treatment using RME-based e-LKPD.

This study examines the integration of Islamic Religious Education and Mathematics within a digital learning environment and its potential role in shaping students' character in the context of Society 5.0. The study employs the Systematic Literature Review (SLR) method to analyze existing studies on the integration of these two subjects through digital learning platforms. The results of the literature review reveal various models of integration, highlighting the role of technology in facilitating the merging of religious education with mathematical thinking. Additionally, this study evaluates the impact of this integration on the development of students' moral and ethical values, as well as the enhancement of their critical, logical, and creative thinking skills. The findings suggest that the integration of Islamic Religious Education and Mathematics not only improves academic learning but also plays a crucial role in character building, fostering values such as responsibility, honesty, and respect. Despite its great potential, this integration faces challenges such as limited technological infrastructure and teacher readiness. This research provides insights into the practical implications of this integration in educational practice in the digital era.  

This study aims to improve the mathematical subtraction calculation ability of class I-A students of SDN 104202 Bandar Setia through the puzzle playing method. The problem in this study is low mathematics learning outcomes. The method used in the study is Classroom Action Research (CAR) as many as 2 cycles. The subjects of this study were class 1-A students at elementary school SDN 104202 Bandar Setia Jl. Terusan Dusun V Bandar Khalipah, Percut Sei Tuan District, Deli Serdang Regency, 2024/2025 Academic Year, totaling 27 students consisting of 10 female students and 17 male students. Classroom Action Research (CAR) improves students' subtraction calculation ability by using the mathematical puzzle playing method of class 1 SDN 104202 Bandar Setia, it can be concluded as follows: "The application of the mathematical puzzle playing method in class 1-A SDN 104202 Bandar Setia which is proven by an increase in research results in each cycle. Assessment of achievement in mathematics learning subtraction in cycle I with an average of 69.25, percentage of completion 69%, and in cycle II began to show an increase with an average value of 90.74 percentage of completion 90%. The results also show that this classroom action research achieved the specified completion indicator, namely completion above 90% .

Education is a key factor in human resource development, especially in rural areas that often face challenges in accessing quality education. The Afternoon Tutoring Program (Bimbel Sore) conducted by KKN-MAS students from Universitas Muhammadiyah Prof. Dr. HAMKA in Sidorejo Village aims to enhance elementary school students' academic understanding and learning motivation. This program was attended by 30 students and focused on core subjects such as Mathematics, Indonesian Language, and Natural Sciences using an interactive approach, including group discussions, quizzes, and Q&A sessions. Evaluation results showed an increase in students' comprehension, with an average score improvement of 25%, as well as greater active participation in learning. Furthermore, the program contributed to boosting students' confidence in facing academic challenges. This initiative is expected to serve as a model for improving education quality in rural areas and inspire other community service activities. The sustainability of this program can be strengthened by involving more volunteers and expanding the range of taught materials to better align with students' needs in the future.

This study aims to determine the effect of the application of multiplication board media in mathematics learning on students' understanding of multiplication concepts in grade IV of elementary school. This study uses a qualitative approach with a descriptive method conducted in several elementary schools. Data were collected through observation, interviews with teachers and students, and documentation of learning activities. The results of the study indicate that the use of multiplication board media can improve students' understanding of multiplication concepts. Students who initially had difficulty memorizing multiplication tables showed significant progress after using this media, as seen from their ability to work on multiplication problems faster and more accurately. In addition, the use of this media also increased student involvement and motivation in learning. Teachers reported that the multiplication board media made it easier for them to explain multiplication concepts in a more concrete and visual way, and increased student participation in class. Based on these results, it can be concluded that the application of multiplication board media in mathematics learning can be an effective alternative to improve students' understanding of multiplication material. This media not only makes mathematics learning more interesting, but also strengthens the basic concepts of mathematics taught in elementary school.

The mathematics learning process at high school level often faces challenges in terms of difficulties in understanding concepts. Conventional learning media is not interesting and interactive enough so it is less effective in understanding the material. This research aims to produce learning media using PowerPoint on the subject of statistics for class X. The development model used is the R&D model with the ADDIE development pattern, which consists of five stages: analysis, design, development, implementation and evaluation. The data collection technique used was a questionnaire. Data collection instrument that will obtain quantitative and qualitative data. Qualitative data was obtained from suggestions and input, while quantitative data was obtained from questionnaire calculations. The data analysis technique used is validation data analysis and learning media practicality data. The results of research validation analysis by three validators, namely media experts, material experts and learning experts using a Likert scale, show that the average validation of learning media is in the very feasible category. Apart from that, the results of the analysis of student response questionnaires, which involved thirty-two students, showed that the learning media obtained an average that fell into the very practical category. The conclusion of this research is that the interactive PowerPoint learning media on the subject of statistics, the material focusing on single data, has been tested and proven to be very feasible and very practical.”

The purpose of this study is (1) to describe the characteristics of a good mobile learning application to improve computational thinking and learning independence of high school students. (2) to produce a mobile learning application that is oriented towards computational thinking skills and student learning independence with good quality. The quality of the development results is determined based on Nieveen's criteria, namely valid, practical, and effective. This study is a research and development (R&D) that uses the Borg & Gall development model with 8 development steps, namely preliminary study, planning, initial product development, small group trials, main product revision, limited scale trials, operational product revisions and large-scale trials. The subjects in this study were 36 students from one class at SMA Negeri 1 Gamping, Sleman Regency. The instrument used to measure the validity of the mobile learning application is the expert validation sheet. The instrument to measure the practicality of the mobile learning application is the student response questionnaire. The instrument to measure the effectiveness of the application is the computational thinking test and the student learning independence questionnaire. Validity and practicality data analysis was conducted by converting quantitative data into qualitative form in the form of four standard scale values, while effectiveness data analysis based on test and questionnaire results was conducted using paired sample t-test. The results of the study showed that (1) Mobile learning applications have the characteristics of being easy to apply, flexible to time, lightweight and easy to carry anywhere and also implementing each computational thinking indicator in each stage of the material. (2) The results of expert validation showed that the developed mobile learning application met the valid criteria as seen by the Aiken's validity test score for media experts of 0.83 and 0.68 for material experts. The practicality of the mobile learning application is included in the very good category as seen from the average results with an average percentage of student responses of 87.17%. The effectiveness of the computational thinking test obtained a t-value of 47.22 greater than t (35,0.05) with a score of 1.69, the effectiveness of the learning independence test based on the t test obtained a t-value of 4.85 greater than t (35,0.05) with a score of 1.69. Based on the results obtained, it can be concluded that the developed mobile learning application meets the criteria of validity, practicality and effectiveness.

This research aims to analyze the effect of using time board media in increasing students' conceptual understanding of time material in class 1 of SD Negeri 104202 Bandar Setia. The background to this research stems from students' low understanding of the concept of time due to learning methods that are still abstract. The research method used is Classroom Action Research (PTK) with the Kemmis and McTaggart model which consists of two cycles. Each cycle includes planning, implementation, observation, and reflection. The research results show that the use of time board media can significantly increase students' understanding of the concept of time. In pre-action, only 24.1% of students achieved good understanding, whereas after implementing time board media in the second cycle, this percentage increased to 72.4%. This increase shows that the time board media is effective in helping students understand the concept of time concretely. Thus, the use of time board media is recommended as an innovative learning strategy in increasing understanding of mathematical concepts in early grade students.