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This study aims to determine whether there is an influence of the problem-based learning model (PBL) with a STEM approach on the mathematical problem solving ability of grade VIII students of SMP Negeri 17 Medan. This research was conducted at SMP N 17 Medan T.A 2023/2024. The research method used is a quasi-experimental method. The sample of this study consisted of two classes, namely class VIII-3 as an experimental class taught with a PBL model with a STEM approach and class VIII-4 as a control class taught with conventional models. Based on descriptive statistics and categorization of research results, it was found that the mathematical problem solving ability of experimental class students was 67,74% of students in the high category, 32.26% of other students in the medium category, and no students in the low category. Meanwhile, in the control class, 15,63% of students were in the high level of problem solving ability, 53,13% were in the medium level and 31,24% of students were in the category low category. Thus it can be seen that the mathematical problem solving ability of grade students taught with PBL with a STEM approach is better than conventional learning models. Furthermore, with inferential statistical analysis for the t test, calculated t value = 2,42 and ttable = 1,999623, thus t calculated > t table means that the problem-solving ability of students taught with PBL with a STEM approach is not the same as students who use the learning  conventional model. With further analysis, Fcalculated = 5,6847 and F table = 3,998494482, then  calculated F > F table so it can be concluded that problem-based learning models with a STEM approach have a significant effect on students' mathematical problem solving abilities.

Since the implementation of the ASEAN Economic Community (AEC) at the end of 2015, it should encourage all economic actors, including SMEs and Micro Enterprises, to improve themselves in order to improve the quality of production of both goods and services. If this is not done, then Indonesia will be an "soft" market for other ASEAN countries because Indonesia has the largest population (population size) in ASEAN, namely no less than 270 million people. SMEs and Micro Enterprises, which are the embodiment of people's economic democracy, will be very hard hit if the heavy flow of goods and services from various ASEAN countries invades the Indonesian market. Realizing this, strengthening (empowering) SMEs and Micro Enterprises is a necessity and necessity to be able to find a national identity that has comparative advantage and competitive advantage. This activity begins with identifying existing problems and then finding a method for solving them. The method used is by providing training and mentoring. The results that have been achieved are the ability of the Traditional Cake business to optimize its sales by using local raw materials. In this way, the "best-selling" Traditional Cake Micro Business can improve its capabilities in the fields of production and business management and online marketing via social media. These outcomes are an indication of increased business empowerment.

This research aims to describe the multi-representation instrument's feasibility and analyze students' multi-representation ability in solving problems regarding work and energy materials. This research uses a mixed methods approach with sequential explanatory design. The analysis results show that seven items are feasible to measure students' multi-representation abilities. Students' level of multi-representation ability in solving problems on work and energy material in the category needs some improvement 20%, inadequate 69%, and missing 11%. Students in the needs some improvement category were interested in the format of the questions used in the test. However, students still have difficulty representing the problem. They made some efforts to understand the problem, answered according to the steps, and had a strategy to answer the question correctly. Students in the inadequate category had difficulty representing the problem but still had a strategy to answer it. Meanwhile, students in the missing category struggled to represent the problem because they did not have steps and strategies to answer.

Physical and cognitive development in middle childhood undergoes many significant changes. Children at this age develop problem-solving skills, abstract thinking, and language development in cognitive aspects. They have the ability to understand the concepts of time and space, as well as improve their reading and writing skills. At this stage, physical development includes rapid body growth, muscle strengthening, and improved motor coordination. Children usually experience rapid height growth and organ development. Physical activities and activities involving movement are becoming increasingly important for achieving an optimal level of physical fitness. These two components are interrelated, and good physical health can support cognitive development. Positive simulations, environmental factors, and education also played an important role in shaping the holistic development of the time.        

Mathematics lessons are lessons that are able to provide students with insight into gaining knowledge systematically or how to solve a mathematical problem. One of the goals of learning mathematics is to develop problem solving abilities. This indicates that problem solving is a very important ability to hone in learning mathematics. The method used is literature study or literature review. The study sources are in the form of reference books, published scientific journals, and references on websites accessed via the internet. Theoretical references obtained through literature study research will be used as the basic foundation and main tool for further practice which will be followed up with field research. Polya's theory is a systematic approach to solving mathematical problems which consists of four main steps, namely understanding the problem, planning a solution, implementing the plan, and checking again. This theory has been applied in various mathematics learning contexts, such as in analyzing the difficulty of solving mathematical problems on various materials and levels of difficulty.

Problem solving is a planned process that needs to be carried out in order to obtain a solution to a particular problem that requires systematic resolution steps. Systematic methods are used in the learning process to solve problems or face challenges needed in everyday life. The research method used is the Literature Review System with writing stages, namely data planning, screening, extraction, analysis. Search literature studies using google scholar data base using the Publish or Perish application. The use of the Math City Map approach can affect the problem-solving ability of students in mathematics learning. The use of the Math City Map approach helps learners understand and solve math problems better and effectively develop problem-solving skills. Learning outside the classroom using MCM applications provides a more immersive and challenging experience for students, helps them apply knowledge, and improves social and personal skills.

According to the KBBI, the meaning of literacy itself, as reported on the Ministry of Education and Culture's official website, is the ability to write and read.  Etymologically, the term literacy itself comes from the Latin "literatus" which means someone who learns.  In this case, literacy is closely related to the process of reading and writing.  Literacy activities in the learning phase aim to develop the ability to understand texts and relate them to personal experiences, think critically, and process communication skills creatively through activities responding to the texts of enrichment books and textbooks.  Literacy or literacy is a general term that refers to a series of individual abilities and skills in reading, writing, speaking, calculating and solving problems at a certain level of expertise required in everyday life.  Benefits of literacy Expanding insight and knowledge.  Sharpen the ability to capture and understand information from reading.  Literacy is not the same as reading.  Reading and books are the surface technical and physical forms of literacy.  The essence of literacy is how humans gain knowledge and learn to gain knowledge.  Raising self-confidence in children is a parent's responsibility, although cultivating self-confidence is not an easy job.  Apart from requiring patience and example, parents must be clever in creating an atmosphere that is conducive to growing children's self-confidence.  Especially an atmosphere that is able to foster a child's sense of self-esteem which must be understood together, by building a child's self-esteem it will not automatically be able to grow a child's self-confidence.  However, if a child has a healthy sense of self-esteem by knowing and being able to accept himself as he is, including all his limitations, then he will be able to feel ashamed of himself and see everything as part of the reality of life.

This research is motivated by the lack of students' ability to solve problems. The purpose of this research is to find out how the ability to solve problems. The type of research used is descriptive-qualitative with a case study research design. The research subjects were in class XI TPM 1 which consisted of 18 students. The subject chosen for the interview was one student who was selected based on his test results. The research instrument was test results in the form of essays and interviews. The results of the research that has been done show that the most problem-solving abilities are at the re-examining stage.

This discussion is to determine the results of the flipbook-based E-Module on the ability to solve mathematical problems in root form material in class This discussion applies the ADDIE development design form, which has 5 main stages, namely analysis, design, development, implementation, evaluation. The subjects of this discussion are 23 students in class X at SMK Mandiri Pontianak. In this discussion, the instruments used are validation sheets, questionnaires and pretest posttest questions. The first research result is the validation of the E-Module, which means the average score for the 3 experts is 87.66% according to very valid criteria. The second is the practicality value, based on views through questionnaire scores filled in by teachers & students which are accumulated to reach a percentage of 83% according to very practical criteria. Then the effectiveness is checked through the results of inferential statistical tests using the student's pretest and posttest according to the results of the t-test, namely tcount < - ttable significant α=5% (a=0.05). Significant differences were found in student learning outcomes and mathematical problem solving abilities, so that the E-Module was categorized as effective. Therefore, it can be concluded that the flipbook-based E-Module for mathematical problem solving abilities in root form material in class.

Some previous research results indicate the existence of misconceptions experienced by students in solving exponential number problems. This study aims to analyze the forms of misconceptions frequently made by students in solving exponential number problems. The research design used in this study is qualitative research, aiming to gain a deep understanding of the forms of misconceptions experienced by students in solving problems related to exponential numbers. The research was conducted at one of the private Islamic junior high schools in the Grati District, with 32 students as the data source, focusing only on 6 specific students: 2 high-ability students (subject 1), 2 medium-ability students (subject 2), and 2 low-ability students (subject 3), selected directly by the mathematics teacher in the class. The research instrument in this study was in the form of a test.

Problem-solving is so important that it makes mathematics teaching a common goal. It is estimated that students who are capable of solving these problems can contribute to the economic growth of their country. Therefore, researchers are interested in analyzing students' ability to solve mathematical problems. Data is taken using the essay test instrument and analyzed using a descriptive quantitative approach. The subject of this study is a student of class XI SMAN 3 Sungai Penuh of 29 people. This research found that students' abilities in composition functions material were well assessed. However, in the problem-solving capabilities measured based on problem-solving indicators, there is still an obstacle to the first indicator, which is to display what is known and what is asked. But for the other three indicators, there are only a few obstacles even no obstacles at all. It is hoped that the obstacles experienced by students in this research can also be the background for further research.

This research was motivated by students who had difficulty when faced with problems that were slightly different from the examples given by the teacher. The use of the 2013 curriculum which uses real life as learning becomes a difficulty for students, especially in terms of problem solving abilities. Therefore, to remember the important role of the scientific approach in implementing the 2013 curriculum, the scientific approach allows it to influence students' problem-solving abilities. So this research aims to find out how much influence the "Scientific Approach has on the Problem Solving Ability of Class V Students in PAI Subjects at SD Negeri 04 Birugo Bukittinggi". This research is correlational research with a quantitative approach. The population is 107 students consisting of four classes. The sample consisted of 32 students, with a sampling technique, namely probability sampling. Data was collected using a questionnaire and analyzed using a simple linear regression test.   

The purpose of this research is to measure the performance of 12th grade students at SMA Negeri 1 Ciruas in the subject of biodiversity and to assess the 12th grade students ability to solve problems through environmentally based learning activities. The research procedure involves using pre-tests and post-tests. The pre-test is used to determine the students initial abilities. The post-test is conducted to assess the students problem solving abilities after learning through Problem Based Learning using Student Discussion Sheets (LKPD). Student performance data, obtained from answering Student Discussion Sheets (LKPD), is analyzed descriptively and qualitatively. Scores obtained from all assessed aspects are then converted to determine the groups assessment criteria. The problem solving abilities of 12th grade students at SMA Negeri Ciruas fall into the "Good" category, and there is an improvement in scores between the pre-test and post-test evaluations.    

This article explains the numeracy literacy abilities of junior high school students in solving word problems in algebraic operations material. This research was conducted at SMP Negeri 1 Siantar with a total of 32 students. Data was obtained through numeracy literacy skills tests and interview results, then the data was analyzed using descriptive study quality. The research results show that the ability of students with the highest scores can fulfill two to three indicators, while students with low numeracy literacy skills test scores only fulfill one indicator test. Failure to fulfill indicators is caused by student errors, including: 1) Not writing down the data information that is known and being asked, 2) Making mistakes in solving problems, 3) Making mistakes in calculating, and 4) Not writing conclusions on the questions obtained from the answers.

In the modern age, technological advancements are undeniably progressing at a rapid pace. Throughout its rapid progress, technology has had an impact on various aspects of life, and education is one of the fields affected by it. In the context of technological advancement, both teachers and students acquire important skills known as computational thinking. Computational thinking refers to the ability to systematically solve problems using logical reasoning and step-by-step decision-making for problem-solving. Computational thinking has a direct relationship with students' mathematical learning, especially in the process of tackling mathematical problems. The purpose of this research is to investigate the influence of computational thinking on mathematics learning, with a specific focus on algorithm analysis in programming. The research methodology involves a comprehensive analysis of related literature to delve into the research topic, using a literature review method. The results of this research indicate that computational thinking can be measured using specific indicators that play a crucial role in mathematics learning. Students' ability to apply computational thinking techniques to solve mathematical problems can be determined based on indicators such as decomposition, pattern recognition, abstraction, algorithmic thinking, and generalization.

This research will cover the application of programming algorithms in the context of mathematics learning and transmitting its impact on the quality of mathematics teaching. Therefore, this research aims to understand and explore the potential role of programming algorithms in supporting effective and relevant mathematics teaching. Literary research methods or literary research. Literature research includes reviewing or studying books or reading sources related to algorithm programming in a systematic and organized manner. Writing this article also uses a literature review method or research desk on the results of research that has been carried out previously and is related to the research discussed, especially algorithm programming. To collect some data This is done by looking for reputable journals, reading books. Scientific journals and various sources from website searches, Google Scholar, digital libraries. The results obtained from research articles and several books explain that in learning algorithms, programming has a role related to science or other science subjects such as mathematics and other subjects. These results come from reflections on literature that focuses on understanding and the role of programming algorithms with mathematics. This role includes the ability to make it easier for students with a mathematics background to collect, calculate, or even read data using programs created algorithmically. When we start studying programming algorithms we must first learn the basic concepts of algorithms and programming. In writing algorithms it is never linked to certain rules but only the intent and purpose of each step of the algorithm must be clear and precise. Mathematics learning algorithms are a concept that involves the use of structured and logical steps to teach and understand mathematical concepts to students. The following is a more detailed explanation of the importance of algorithms in mathematics learning: 1. Structured Steps: Algorithms consist of a series of structured and explicit steps to complete a task. math assignment or problem.This is a document that guides students through the process of solving a math problem. 2. Understanding Mathematical Concepts: Algorithms are used to describe and illustrate how to understand certain mathematical concepts. For example, how to calculate the area of ​​a triangle or how to solve linear equations.

Leadership traits emerge in a person when one group member can change and arouse the motivation of other members in the group so that the group can be directed, structured and coordinated in achieving goals effectively and efficiently. Leadership is related to how to influence other people, followers and subordinates in a company to achieve the goals desired by a leader. In line with the discussion of the methodology, this research uses a qualitative descriptive method, namely research that attempts to describe a symptom, event, event that is occurring in the present. In this research, the researcher tries to photograph events and occurrences that are of central concern, and then describe them as they really are. As for descriptive descriptive research on solving a problem that exists in the present, this research will describe the phenomena that occur regarding Leadership style is a person's ability to lead and encourage their subordinates to do everything they are given thoroughly and of course optimally. An authoritarian leadership style is one of the leadership styles used by leaders towards their employees. Authoritarian leadership is a form of leadership where all forms of power, decisions, performance and work motivation are in the hands of the leader himself. The leadership style  applied  at PT Xyz and Excise is a semi-military authoritarian leadership style. A person's level of work motivation determines how that person performs.

The background of the problem in this study is due to the low problem solving ability of students, where in the learning process educators still use the cerama or discussion method so that during learning students only listen and receive explanations of material without any mastery of relevant competencies and structures. The learning process is still using the revised 2013 curriculum, which requires students to be able to have productivity, creativity, innovation and have activities that can be contributed to social life. The purpose of this study was to determine how much “The Effect of Problem Based learning Model Application on students Problem Solving Ability at MTs Muhammadiyah Alamanda Kec. Kinali. Kab. Pasaman Barat”. This quantitative research uses the type of research Quasy Experimental Design. The population in this study amounted to 60 students, namely all seventh grade students at MTs Muhammdiyah Alamanda. The sample used in this study amounted to 60 students, with random sampling technique if the data was normally distributed and homogeny. The data analysis technique used is a description of the research data, normally, homogeny and hypothesis test. The results showed that testing using the t-test obtained the results of thitung = 13.863 and ttable= 1.6715 and the value of Sig. (2-tailed) = 0.000 at the problem based learning model has an influence on students problem solving skills.

The VUCA (Volatile, Uncertain, Complex, Ambiguous) era has significantly changed the business landscape, forcing organizations to change their approach to recruitment and selection strategies. In this context, this research explores how organizations can adapt their recruitment and selection practices to address the challenges of the VUCA era. This study presents an in-depth literature review of recruitment and selection strategies relevant to the VUCA era. We highlight a shift from an emphasis on technical skills toward assessing adaptability skills, situational leadership, and the ability to collaborate in multidisciplinary teams. In addition, this research considers the use of technology such as data analysis and artificial intelligence in the recruitment and selection process. We illustrate its usefulness in identifying candidates that have the potential to deal with uncertainty and ambiguity. The results show that organizations need to change their recruitment and selection paradigm to be more responsive to the VUCA era. They should focus on identifying candidates who not only have the necessary technical skills but also have strong adaptability, problem-solving and collaboration abilities. Technology can be a valuable tool in assisting this process. In conclusion, recruitment and selection strategies in the VUCA era must follow market development trends and prioritize attributes that are relevant to the challenges faced by the organization. In this way, organizations can build a workforce that is ready to face uncertainty and achieve long-term success.

This research aims to produce a product in the form of problem-based learning worksheets (LKPD) that is valid, practical, and effective to improve students' mathematical problem solving skills. This research is designed based on the stages of the 4-D development model by Thiagarajan, Semmel, and Semmel which are adapted into 3-D including the stages of define, design, and develop. The subjects in this study were 31 students of grade VII-4 SMP Negeri 2 Percut Sei Tuan. Based on the research that has been conducted, the validity of the developed LKPD obtained an average percentage of assessment of 84.1% by experts with qualifications classified as very valid. Through the LKPD practicality questionnaire by teachers and students, an average percentage of assessment was obtained of 90% by teachers and 93.6% by students with qualifications classified as very practical to be used in the learning process. The implementation of learning with the application of problem-based learning LKPD has been carried out to see the effectiveness of  LKPD with assessment references that are determined to obtain results, namely for the completeness of classical learning reaching 83.9%, the achievement of learning objectives is achieved in question points 1, 2, 3, 4, and 5, and the achievement of efficient learning time or does not exceed ordinary learning. From the three references for assessing effectiveness, the LKPD developed is classified as effective.  The increasing in mathematical problem solving was in the medium category with an average gain score of 0.60. Based on the research acquisition data, it is concluded that the problem-based learning LKPD developed in this study has met valid, practical, and effective qualifications.