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This research is a Classroom Action Research (PTK) which is carried out in 2 cycles. Before carrying out research or taking action, an initial test is given to measure students' problem-solving ability and at the end of each cycle a problem-solving ability test is given. This study aims to determine how to improve problem solving skills through the application of the Geogebra-assisted Problem Based Learning (PBL) learning model. Students experienced an increase in problem-solving skills, in the initial test the average problem-solving ability was 42.19%. In the first cycle, the test results showed an increase of 57.81%. From the results of the second cycle test also increased to 88.50%. The test results showed an increase in students' problem-solving abilities. Thus, it can be concluded that the application of the Geogebra media-assisted PBL model can improve students' problem-solving abilities.

Education is a conscious effort to change character, morals, morals and also fosters creativity in thinking. Creative in thinking is something that is very urgent in life. Education has value to be able to solve problems precisely and quickly. The purpose of this study was to determine the extent to which the Collaborative Role of Creative Problem Solving and the Quiz Team Method played a role in increasing creative thinking. This study uses a qualitative descriptive analytical approach, which is one of the approaches used in qualitative research to understand phenomena in detail and depth. Researchers collect data through interview techniques, observation, case studies, or document analysis. Researchers used the class action research method (CAR). CAR involves iterative cycles of planning, action, observation, and reflection in order to achieve continuous improvement in student learning and achievement. The results showed that learning Creative Problem Solving (CPS) and quiz teams can improve students' creative thinking and this method is very good to use because students feel happy and not bored.

The community service activity was carried out by the East Java UPNV KKNT-T team in Klampis Ngasem Village with the background from the results of the Forum Group Discussion for MSMEs in Klampis Ngasem Village including: lack of knowledge regarding Cost of Production, lack of knowledge regarding classification and cost calculation fixed and variable costs in accordance with Generally Accepted Accounting Principles both manually andexcel. The purpose of holding this activity is that MSME actors in Klampis Ngasem Village have knowledge and understanding regarding the calculation of the Cost of Production  so that they are able to determine a good selling price and get the expected profit. The methods used in this community service activity are observation, problem-solving approaches, training, and mentoring. The results of the implementation of this service are as follows: exposure, training, and assistance regarding fixed costs and variable costs have been carried out so that they are able to carry out the principles of calculating  in accordance with Generally Accepted Accounting Principles.

This research is to analyze the existing database at the software laboratory center to obtain the necessary information and design a data warehouse to integrate existing data and provide global information. The method used is the method of analysis and planning. The method of analysis is carried out through reviewing and carrying out system analysis, carrying out analysis and identification of system vulnerabilities, and analyzing problem solving. And the data warehouse design method is implemented by applying the nine steps (Nine-Step Methodology) used by Ralph Kimball to design the star model. The result is a data warehouse that provides some global information that is global, meaningful, integrated and can be viewed from different perspectives and is useful for managers in decision making. A separate repository of functioning databases. A software lab center is already needed to help managers make strategic decisions quickly and accurately.    

Problem solving abilities can be used in everyday life to find solutions and solve mathematical problems. The ability to solve mathematical problems in class XI students at SMAN 55 Jakarta for the 2022/2023 academic year is the goal of this research. The research subjects were 36 class XI students consisting of 18 female students and 18 male students at SMAN 55 Jakarta. The research instruments used were interviews, observation, and documentation. The data analysis technique used is qualitative data analysis, namely data reduction, data presentation, drawing conclusions. The research results obtained show the importance of the teacher's role in helping students to solve problems in learning mathematics.

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 α = 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 describe students' mathematical problem solving skills in solving word problems.  The population in this study were all fourth grade students at SD 4 Dersalam with a total sample of 24 students.  The research method used is a qualitative approach with descriptive methods.  The research instrument used was in the form of test questions (essays) and interview for mathematical problem-solving abilities in diagrammatic material.  The data collection technique in this study has three stages of procedure namely;  1) preparation stage, 2) implementation stage, 3) final stage.  Based on the results of the tests that have been given, the ability to solve mathematical problems in the good category is 14 students (58.3%), the medium category is 4 students (16.6%) and the low category is 6 students (25%).  Based on the categories of mathematical problem solving abilities, namely good, sufficient and insufficient, it can be described as follows: 1. Students' Mathematical Problem Solving Ability in the Good Category 2. Students' Mathematical Problem Solving Ability in the Enough Category 3. Students' Mathematical Problem Solving Ability in the Poor Category.

The purpose of this study was to develop Problem Based Learning (PBL) based E-Comic learning media on Problem Solving Ability that is valid, practical, and effective on student learning outcomes in statistics material in class XII at SMA Negeri 1 Sungai Laur. The method used is the ADDIE method. The subjects of this study were 29 class XII students of SMA Negeri 1 Sungai Laur, 3 material and media experts. The instruments used in this study were in the form of material expert validation sheets and media expert validation sheets, teacher response questionnaires, student response questionnaires and post-test questions based on the results of the research that had been carried out obtained the results of validation of E-Comic learning media based on Problem Based Learning (PBL). ) Regarding Problem Solving Ability has a validity level of 91.22% with very valid criteria, the practicality level of learning media is 89.60% with very practical criteria and the level of effectiveness of learning media is 93.10% with very effective criteria.

This research was conducted with the aim of producing digital learning media using the Smart Apps Creator through a Realistic Mathematics Education approach that is valid, effective, and able to improve students' mathematical problem solving abilities in the matter of a system of two-variable linear equations. This type of research is Research and Development (R&D) with the ADDIE model. From the research results, it was obtained that the media and material validity values were 93.6% and 93% with very valid categories. The practicality of the media through the results of the teacher's response questionnaire obtained a practicality value of 97.3% in the very practical category and the results of the student response questionnaire for the small group test and large group test obtained values of 90.9% and 91.4% in the very practical category. Then the value of effectiveness is seen through the mastery of classical learning and the results of the student response questionnaire obtained percentages of 87.5% and 94.05% with very effective categories. Improving problem solving abilities in students, the results obtained are that the level of students' problem solving abilities is at a percentage of 92% with a very high category, while based on the N-Gain test the average value obtained by students is 0.6473 which means there is an increase in problem solving abilities in students medium category. So based on the results obtained it can be concluded that the learning media developed in this study are valid, practical, effective, and able to improve students' mathematical problem solving abilities.

This research aims to analyze mathematics learning, especially in number material, as well as classify students' mathematical problem solving abilities. , interviews and documentation. 12 students have no value, 5 students have moderate values and 3 students have very high scores, the questions given are 5 all description questions. In making mathematical problem solving questions we use indicators namely: 1.) Understanding new mathematical knowledge through problem solving, 2.) Designing mathematical models, 3.) implementing and adapting appropriate strategies to solve problems, 4.) completing models, 5.) monitor and reflect on the process of solving mathematical problems. Of the 5 questions, they are then assessed with an assessment rubik according to the points specified in the question grid used. The results of the assessment were categorized into 3 categories, namely high, medium category, and low category in class IV SD 1 Burikan.

. The potential of Kedungpari Village, Mojowarno District, Jombang Regency has potential for MSMEs compared to the potential for cultural heritage or natural tourism potential. KKNT MBKM East Java Veterans National Development University group of 20 successfully held the Kedungpari Duwe Gawe culinary tourism festival. Through this activity MSME actors try to open up by conveying the constraints or problems faced by MSME actors including MSME licensing, halal certification, MSME development which is still lacking in knowledge, as well as problems with marketing and so on. Thus the solution given is to form an MSME community as a forum for MSME actors in more focused development and solving problems that each MSME has through BUMDes which is the manager and person in charge of the association. The goal is for the community to become a forum for interaction and aspirations. The method used is based on the results of a field survey and data collection on MSMEs in the village of Kedung Pari.    

Group KKN-T MBKM UPN "Veteran" East Java conducted digital marketing training and assistance to Mr. Suparno's MSMEs Furniture business located in Nglebak Village, Bareng District, Jombang Regency. The purpose of this community service activity is to develop Pak Suparno's furniture business by providing insight into marketing strategies that initially used traditional methods, changing along with existing technological developments. In solving the MSME furniture problem owned by Mr. Suparno, training methods and Focus Group Discussion (FGD) were used by providing material presentation on the importance of the role of digital marketing for the development of a business, providing tutorials for creating accounts on digital media such as Shopee and Instagram to market their products. With this community service activity, it is hoped that it can provide benefits for MSME actors in Nglebak Village, namely adding insight to develop their business by marketing and selling products through e-commerce and social media as a place to introduce products.

The purpose of this research is to analyze the effectiveness of Geogebra learning media in solving math problems among students. The method used in this study is the literature review method with a qualitative approach, which involves a literature review of library sources such as books, articles, journals. Data collection techniques were carried out by conducting literature studies and distributing questionnaires and test questions given to 10 students from class 4C in the 4th semester of Mathematics Education at Indraprasta University PGRI, who were considered to represent the entire research subject. The data analysis technique uses descriptive analytic by collecting data then compiling, analyzing and drawing conclusions. The results of this study indicate that Geogebra is less effective in solving mathematical problems due to lack of knowledge about Geogebra and low interest in using Geogebra.

This study aims to analyze the STEAM approach based on Busy Book media in increasing learning effectiveness. We will explore the effect of using Busy Books on students' conceptual understanding, learning motivation, critical thinking skills, and problem solving abilities. In addition, we will also identify the advantages and limitations of this approach. In this study, we will use a qualitative research method with a literature study approach. Literature study, also known as literature review or literature review, is a systematic process of gathering, evaluating, and analyzing literature sources that are relevant to a particular research topic. A literature study is conducted to gain a comprehensive understanding of previous research, existing thoughts and findings, and knowledge gaps that still need to be filled.      

Improving cognitive skills in early childhood is an important part of their development. An effective learning environment can be a means to that end. One type of learning media that can be used is loose parts. Looseparts is a term used to describe materials or objects that have certain properties and can be used creatively in children's play and learning. These materials are often available in a variety of sizes, shapes, textures, and flexibility, so that children can manipulate them, combine them, and use their imagination to create a variety of possibilities for play and exploration. Examples of looseparts are rocks, sand, branches, pieces of wood, leaves, paper, shells, rubber bands, rubber rings, ropes, boxes and other everyday objects. The purpose of writing this article is to find out the analysis of the needs of looseparts learning media in the implementation of improving early childhood cognitive skills, the data collection method in this study is by distributing questionnaire sheets, interviews and documentation. When children play with looseparts, they can develop various cognitive aspects such as categorization, problem solving, visualization, abstract thinking, spatial skills, and comprehension. It is important to give children time and space to freely explore the open passages so that they can develop cognitive skills in a natural and interesting way  

This study aims to describe the application of the scaffolding technique given by the teacher to overcome students' learning difficulties in solving word problems in the material of a system of two-variable linear equations. This type of research is case study research. The subjects of this study were 36 grade 8 students of junior high school. Subject taking using purposive sampling technique. The data collection technique uses the Learning Implementation Plan (RPP) instrument, syllabus, interviews, field notes, and documentation, each of which has been tried out and has met the validation requirements by the validator. The data analysis technique used is the process of data reduction, the process of presenting data, the process of drawing conclusions. After being given the scaffolding technique in each group, it was found that students were able to complete the test with good and correct completion steps. Students are able to determine variables and mathematical models correctly. In addition, students are also able to explain the steps of solving well.

Project-based learning encourages students to develop collaboration, communication, problem solving, critical, and creativity skills. This model is widely used at the level of educational units such as junior secondary education and upper secondary education and even higher education. The aim of this research is to capture the research landscape related to Project-Based Learning in high school. The method used is bibliometric analysis. The data is obtained from the enhanced Scopus database. The results showed that the number of publications related to Project-Based Learning in high school increased every year from 2017 to 2022. The highest number of documents were in Indonesia and the United States, the highest number of documents were in institutions or universities in Indonesia. The research focuses are 1) Problem-Based Learning and Student; 2) Project-Based Learning, e-learning and STEM; 3) high school and inquiry based discovery learning.

Natural material media is everything learning media that exists in the environment around us to support learning that is very easy and economical but can be used effectively and efficiently which is directly obtained from nature, natural materials that are used as learning media include: stones, branches, seeds, leaves, wood and other natural objects. Natural media becomes something effective and efficient if it is well optimized as material in learning and adjusted to the learning goals that will be achieved by children. One of them is in the development of numeracy and cognitive abilities of children. Natural media can help children develop numeracy skills and cognitive abilities, through various activities that involve critical thinking and problem solving such as counting, comparing, sorting, building, classifying objects and so on.

Cost of goods manufactured (COGM) is an important component of making a product, because knowing the COGM of a product can be used as a reference to determine the profit margin of a product. Without knowing the COGM of a product, we will be confused in determining the selling price. The COGM calculation is very influential for the sale of a product whether the product is experiencing a profit or loss. This study aims to determine the COGM calculations that have been carried out by MSMEs are in accordance with COGM accounting calculations or are still only limited to manual calculations. In addition, the main objective of this study is to design an accounting system for determining COGM in the Tempe Chips Industry in determining the cost of production and to apply a variable costing method to determine the cost of goods manufactured in SMEs so that the correct cost of production can be presented. The results of this study indicate that based on Cost of goods manufactured calculations carried out by MSME actors it is still very low so it is necessary to revamp the HPP calculations in accordance with accounting standards. Based on the evaluation of the old system, the author wishes to offer a new system, namely the Information System for Determining the Cost of Production of Tempe Chips SMEs which is expected to be an alternative in solving problems that are being faced by business owners. This new system makes it easy for users related to the process of recording data into the database, so that related parties can easily operate.  

This study aims to determine the effect of the Thinking Aloud Pair Problem Solving (TAPPS) method on students' mathematical communication abilities. The type of research used is a Quasi-Experimental type (pseudo-experimental) and uses the True Experimental Design research design with the Posttest-Only Controll form. The research was conducted at SMP Ikhlasiyah Palembang with a population of all students of class VII consisting of 2 classes. The sample were taken from all members of all population so that class VII.1 as the experimental class was given treatment, namely the Thinking Aloud Pair Problem Solving (TAPPS) method and class VII.2 as the control class which was not given treatment, namely the conventional method. Research data was collected through tests. Based on the analysis of the test results, it shows that the students' mathematical communication skills in the experimental class are higher than those in the control class. This means that the class that was treated with the TAPPS method affected students' mathematical communication skills. Statistical calculations obtained from the test results yield tcount = 2.944 and ttable = 2.013, so that tcount > ttable which causes H0 to be rejected and H1 to be accepted. Thus, it can be concluded that there is an influence of the Thinking Aloud Pair Problem Solving (TAPPS) method on the mathematical communication abilities of class VII students of SMP Ikhlasiyah Palembang.