The aim of this research is to describe the mathematical representation abilities of class X,this research is a qualitative descriptive type research. The subjects in this research were class XII students at SMAN. 2 Kerinci for the 2023/2024 academic year as many as 24 students. The focus of this research is the ability to visual representation, symbolic representation and verbal representation. The research methodology used is qualitative descriptive where tests and documentation are the data collection techniques used. The conclusion of this research is that mathematical representation skills are very important for students to master in determining the right strategy to solve a mathematical problem. Mathematical problems in everyday life, visual, verbal and symbolic representation skills are used, because everyday life problems need to be represented in the form of symbols or images in order to make it easier to solve and face problems.

Anisah. 182140060. "Development of Character Education-Based Interactive Learning Media in Class VII Middle School Mathematics Learning Using Powerpoint". Thesis. Mathematics education. FKIP. Purworejo Muhammadiyah University. 2023.
The aim of this research is to develop and determine the feasibility of the learning media that has been developed. The media product in this study is in the form of interactive learning media based on character education using Powerpoint in learning mathematics for seventh grade junior high school on integer material. This research uses the type of development research (Research and Development) with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation).
Data collection techniques in this research were carried out by means of interviews, questionnaires and tests. The instruments used include media expert and material expert validation sheets, teacher response questionnaire sheets and student responses, and final test questions. The subjects in this research were class VIID students at SMP Negeri 18 Purworejo. Data analysis in this study was the validity data analysis of media experts and material experts, analysis of teacher response data and student responses, and analysis of final test completeness data.
The results of the media expert's assessment obtained a total score of 66 with valid criteria and material experts obtained a total score of 29 with the validity calculation formula obtaining results with valid criteria, from the teacher response questionnaire and student responses obtained an average total score of 85.1 with practical criteria, from The results of the final question test obtained a completion percentage of 84% with effective criteria. Based on the research results, this mathematics learning media was declared valid, practical and effective. Thus it can be concluded that interactive learning media based on character education in class VII SMP mathematics learning using PowerPoint is appropriate to use as a learning medium.

Improving community welfare is the main goal, of course, and one of the main goals of CSR. Companies can help and improve communities in social, cultural, economic, and physical areas by carrying out corporate social responsibility. By doing so, they can make the community feel helped in improving their welfare If someone offers them help, they tend to see it positively because it is evidence of gratitude and empathy shown. The use of appropriate theories to study community empowerment and capacity building of the River School, including community empowerment through CSR programs, River Schools as a model of environmental education, the role of PLN CSR in environmental education at River Schools, early environmental awareness through CSR and River Schools, the impact of CSR programs on community empowerment and independence. This study uses a qualitative approach with a case study of community empowerment through PLN CSR to explore early environmental awareness The location of this research was carried out in Gunung Anyar Tambak Village Rt.01 Rw.01 Surabaya, which is an area used by Bank Sampah by PT. PLN (Persero). The PLN CSR program involving various parties in environmental education has a positive impact on shaping the mindset of the community who are more concerned about environmental sustainability. Awareness built early on, especially in children and adolescents, is expected to produce a generation that is more responsive to environmental issues. Counseling involving schools in this sub-district has proven effective in building a deeper understanding, which can then be passed on to their families. Therefore, it is important for PLN to continue to assist the community, provide adequate facilities and infrastructure, and provide incentives or awards for those who succeed in protecting the environment and managing resources wisely.

Child neglect is a form of emotional violence that can have a significant impact on a child's social and emotional development. Neglect, which is characterized by a lack of attention, affection and support from parents or primary caregivers, often hinders children's ability to build interpersonal relationships, manage emotions and form self-confidence. This impact is not only short-term but also affects the child's life in adulthood, including the risk of mental disorders such as anxiety and depression. This article aims to analyze the impact of neglect on children's social and emotional development and provide recommendations for preventive and intervention steps to support children's optimal growth and development.

This research aims to explore the use of the Microsoft Mathematics application in mathematics learning. Using the Systematic Literature Review (SLR) method, this research summarizes the findings of four related articles. The research results show that the use of Microsoft Mathematics in mathematics learning can facilitate student understanding, simplify complex concepts, encourage independent learning, improve critical thinking skills, and assist in problem solving. The implication of this research is that the use of Microsoft Mathematics in mathematics education can provide significant benefits for student learning outcomes

Studying biology serves as a means to enhance understanding, abilities, perspectives, principles, and ecological accountability. Biology is the scientific discipline that seeks to understand the natural world. Learning biology entails more than simply acquiring factual knowledge, concepts, or principles; it is also an exploratory endeavor. This research aims to discuss problem-based learning (PBL), which can improve the learning outcomes of class XI biology students on plant tissue material and can be used as an alternative learning model. This research uses classroom action research (PTK), which includes four stages: planning, implementing actions, observation,  and reflection, which aim to improve the learning process. PTK is an activity that involves testing an idea in practice, which can improve and increase the quality of the teaching and learning process. The application of the PBL model was able to improve student learning outcomes, especially in biology subjects with plant tissue material for class XI students at SMA N 2 Langowan. During the pre-cycle, the average value was 5.7. In cycle I, it climbed to an average value of 7.3. In cycle II, it further increased to an average value of 8.4. Meanwhile, the completeness of student learning outcomes in the pre-cycle was 20%, while in the first cycle, it was 67%, then grew again in the second cycle, specifically 87%. Based on the aforementioned research findings, it can be inferred that the implementation of the Problem-Based Learning (PBL) model has led to an improvement in the academic performance of Biology students at SMAN 2 Langowan.
 

The low student learning outcomes are caused by a lack of ability to understand concepts and many students are not serious about working on questions, so that learning is not optimal and effective. Therefore, the general aim of this research is to describe the influence of TGT type cooperative learning based on badeglar media on the conceptual understanding of class X students at Adi Luhur Vocational School for the 2023/2024 academic year. The method in this research uses a pre-experimental method, namely comparing the results of the pretest and posttest with the research population being all class X students at Adi Luhur Vocational School and the sample used in this research is the population itself. Data was collected using test techniques with test sheet research instruments. The data is processed according to parametric statistical calculations. The results of this research prove that the use of TGT type cooperative learning based on counting funnel media has a positive effect on student learning outcomes. The average percentage of student learning outcomes using t-test calculations where tcount is greater than ttable, namely 3.277 > 1.740. So it can be concluded that H0 is rejected and H1 is accepted, in other words there is a significant difference between the pretest and posttest

This study aims to determine the feasibility of SETS (Science, Environment, Technology, And Society) based modules on colloidal system, determine student learning outcomes after using SETS-based modules in learning and student responses to the modules. This study uses a 4-D development model consisting of define, design, development, and dissemination. This research was conducted at SMA Negeri 11 Medan which was carried out for 7 months. The feasibility of module was seen through a feasibility questionnaire for media and material experts based on the BSNP standard with a Likert scale of 1 to 5. Validation data obtained from media and material experts on SETS-based modules obtained an average percentage of 83.58% with the category valid/worthy. Student learning outcomes were obtained through the calculation of N-Gain test, which was equal to 0.74 in the high category and the average posttest score of students was 84.67. Student responses to the SETS-based module obtained an average percentage of 91.24% with a very high questionnaire interpretation. Based on the results obtained by the researcher, it can be concluded that this SETS-based module is appropriate for use in colloidal learning with a high student learning success rate and student responses that fall into very good criteria.

Mathematics is one of the subjects taught at all levels from basic education to higher education, which has a significant role in preparing students to have the ability to think logically, analytically, systematically, critically and creatively, as well as have the ability to work together. One of the activities in learning mathematics at school is through problem solving. Problem solving aims to see students' understanding of a material. Mathematical problem solving ability is a very important part of learning mathematics. However, in reality, the problem-solving ability of junior high school students' mathematics is still very low. From these problems, then one of the lessons that can improve the ability to solve mathematical problems is Problem Solving learning. One of the factors that influence differences in problem solving ability is learning style. Learning styles have a close relationship and influence on the learning process in order to achieve learning goals. With students knowing their learning style, learning Problem Solving can be done easily. The subjects of this study were students of class VIII A MTs Plus Sunan Drajat Kedungsantren Bojonegoro. The purpose of this study was to determine the effectiveness of Problem Solving learning on mathematics learning outcomes when viewed from students' learning styles. The type of research used is quantitative research with the One Group Pretest-Posttest Design. The results showed that testing the data on mathematics learning outcomes with the Paired Sample T-Test stated that the t_count value was -9.726. The t_count value is negative, because the pretest average value is lower than the posttest average value. In this case, the t_count value can be positive so that it becomes 9.726. Meanwhile, the value of t_table with ? = 0.05 and degrees of freedom (dk=n-1) with 24 students is 1.714. Then it can be seen that t_count > t_table, then H0 is rejected and Ha is accepted, meaning that there is a significant difference. So it can be concluded that the application of the Problem Solving learning model is quite effectively carried out in the teaching and learning process for class VIII A students of MTs Plus Sunan Drajat Kedungsantren on the material of geometric shapes on the flat sides of cubes and blocks.
 

This study aims to explore the application of GeoGebra software in improving students' mathematical communication skills. GeoGebra, as a visualization and interactive tool, is considered to be able to help students understand mathematical concepts more deeply and effectively. This literature study collects and analyzes various studies that have been conducted on the use of GeoGebra at various levels of education, from elementary school to college. The results of the study show that the use of GeoGebra can improve students' mathematical communication skills, both in written and oral form. Students who use GeoGebra tend to have an easier time describing and explaining mathematical concepts, as well as being more actively involved in discussions and problem-solving. In addition, GeoGebra also helps to increase students' motivation to learn and provide a more enjoyable and meaningful learning experience. The conclusion of this study shows that GeoGebra is an effective tool to be used in mathematics learning to improve students' mathematical communication skills.