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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.

The objective of this research is to investigate the potential impact of implementing the TPS cooperative learning model on enhancing the self-confidence and mathematics communication abilities of seventh-grade students at SMP Negeri 5 Percut Sei Tuan. The specific focus will be on the Set content. This study used a class action research design, consisting of two distinct cycles. Each iteration comprises two meetings. The participants in this research consisted of 28 students from class VII-8 of SMP Negeri 5 Percut Sei Tuan. The primary focus of this study is to enhance students' self-confidence and mathematical communication abilities by using the TPS cooperative learning model on Set material at SMP Negeri 5 Percut Sei Tuan during the academic year 2022/2023. Based on the findings derived from the analysis of the data, it was observed that the mean score for students' initial self-confidence was 53.61. Additionally, the mean test score for students' initial communication skills was found to be 44.92. Among the participants, a total of 3 students (13.04%) demonstrated mastery in this area, while the remaining 20 students (86.95%) had not yet achieved mastery. The learning process in cycle I was conducted using the TPS model. As a result, the average score of student confidence increased to 62.14, while the average score of the mathematical communication ability test increased to 55.80. Out of the total number of students, 8 students (34.78%) reached the completion criteria, while 15 students (65.21%) did not reach the completion criteria. In the second cycle, there was an observed increase in student performance. The average score for student confidence was recorded as 76.29, while the average score for the mathematical communication ability test was 75.97. Out of the total number of students, 19 students (82.60%) achieved completeness in the test, while 4 students (17.40%) did not reach completeness. The self-confidence questionnaire and mathematical communication skills exam administered in cycle II yielded results indicating a satisfactory level of student proficiency. 

This research aims: (1) the mathematical communication abilities of students using the think-talk-write (TTW) cooperative learning model are higher than the mathematical communication abilities of students using conventional learning models in class VIII SMP Negeri 19 Medan, (2) the process of completing answers is created by students in solving problems in the think-talk-write (TTW) cooperative learning model and conventional learning models. This type of research is quantitative research with a Quasi Experimental method. This research was conducted at SMP Negeri 19 Medan. The sampling technique in this research used the Purposive Sampling technique, namely class VIII-5 as a class taught using the think-talk-write type cooperative learning model and class VIII-6 as a class taught with a conventional learning model. The data collection instruments were an observation sheet and a test sheet for students' mathematical communication skills in the form of 4 essay questions. Data analysis in this study used a t-Test with the Independent sample t-Test technique with the help of the SPSS 22 program. The results of the research showed that the average score for the class taught using the think-talk-write cooperative learning model was 80.1 and the class taught with a conventional learning model of 74.6. Hypothesis testing was carried out using the t-test, from the calculation results it was obtained that tcount was 2.501 and ttable 1.67469, the significance level was 0.016<0.05, then H0 was rejected and Ha was accepted, so it was concluded that students' mathematical communication skills used the cooperative learning model type. think-talk-write is higher than students' mathematical communication skills using conventional learning models. Based on the analysis of the process of students' answers to the mathematical communication skills test, students who received think-talk-write cooperative learning were better than students who received conventional learning.

The purpose of this research is to determine the application of the Discovery Learning learning model with the research subjects of students in class X.3 UPT SMA Negeri 6 Maros, totaling 28 students. The type of research used in this research is classroom action research (PTK). This research takes the form of a cyclical assessment process consisting of 4 stages, namely planning, implementation, observation and reflection. Data regarding student activities during the teaching and learning process and the teacher's ability to manage learning were collected using observation sheets. And data regarding student learning outcomes is collected by giving a learning outcomes test at the end of each cycle. The results of observations in the first cycle of learning results by applying the Discovery Learning learning model showed that learning completion reached 14.3% or 4 students out of 28 students had completed learning. The results of observations in cycle II of completeness of learning outcomes reached 35.8% or 10 students out of 28 students had completed their studies. From the results of the actions in cycle I and cycle II, it was concluded that the application of the Discovery Learning learning model could improve student learning outcomes at UPT SMA Negeri 6 Maros for the 2022/2023 academic year.    

This research aims to enhance the mathematical communication skills of students after implementing the Think Talk Write cooperative learning model. The study was conducted in the first semester of the 2023/2024 academic year in class XI MIA 3 at MAN 1 Medan. The subjects of this research were 39 students from class XI MIA 3 MAN 1 Medan. The object of this research was the mathematical communication skills of students by applying the Think Talk Write learning model. The research method used was classroom action research conducted over 2 cycles. The results of the students' mathematical communication skills test showed improvement from the initial test to the tests given in Cycle I and Cycle II. In the initial test, only 1 student (2.5%) achieved proficiency with an average score of 56, categorized as low. In Cycle I, there was a classical increase, with 10 students (25.6%) achieving proficiency with an average score of 67.9, categorized as moderate. In Cycle II, there was also a classical increase, with 33 students (84.6%) achieving proficiency with an average score of 86.9, categorized as high. It can be concluded that by implementing the Think Talk Write cooperative learning model, it is possible to improve the mathematical communication skills of class XI MIA 3 students at MAN 1 Medan.

The purpose of this study is to ascertain how efforts are made and enhance students' capacity for problem-solving following the application of the lesson study-based scientific approach and problem-based learning model. 38 students from SMP Negeri 4 Tebing Tinggi's VIII–5 class during the 2022–2023 academic year served as the research subjects. Classroom Action Research (PTK), which is this kind of research, is divided into two cycles. In pre-action, students take an initial test, and at the conclusion of each cycle, they take an exam on their problem-solving skills. The research findings are as follows: (1) If the teacher masters and effectively applies the PBL model and scientific approach based on lesson study, students' mathematical problem solving abilities can be improved, (2) Application of the PBL model can increase student learning completeness by 63.16% from 23.68% at the end of cycle I to 86.84% at the end of cycle II. (3) Students' mathematical problem solving abilities can be improved by 34.37% from 47.47% at the end of cycle I to 82.04% at the end of cycle II.

This study aims to understand the impact of problem-based learning (PBL) on mathematical representation in students using Geogebra and model discovery learning in X SMAS Tamansiswa Singosari. It uses quasi-experimental research with purposive sampling and control group design. The results show that all data is normal and homogeneous, with a  value of 4.71>2.03. The study also reveals that the overall learning process for experimental students is better than that of control students.

The background to this research is the low level of dance skills of students in class IV of Mugarsari Elementary School, Tasikmalaya City. This research aims to determine and analyze the planning, implementation and improvement of students' dance skills using the demonstration method. The method used in this research is Classroom Action Research (PTK) with the object of this research being 29 students. The PTK model used is the PTK research method according to Kemmis and Mc. Taggart which consists of planning, action, observation and reflection in each cycle. The discussion of this research uses the demonstration method in the dance learning process by carrying out tests at the end of each cycle. Data collection techniques in this research are by means of observation, tests and documentation. The results of the research concluded that learning dance using the demonstration method was able to improve students' skills in learning dance. This increase before using the demonstration method (Pre-action) obtained an average score of 79.7% with a completeness percentage of 22.7% in the "less" category. After using the demonstration method in cycle I obtained an average score of 76.13 with a completeness percentage of 59. 09% "good" category. Then in cycle II obtained an average score of 83.63 with a percentage of 86.36% in the "good" category. So that the use of the demonstration method can improve students' skills in learning dance.

The aim of this research is to evaluate the evaluation of equality education programs using the stake method. This research used a qualitative approach, and was carried out at PKBM Sabilul Huda which is located at Kp. Tejakalapa, Sukamukti, Kec. Cisayong, Tasikmalaya Regency. The informants in this research were PKBM Sabilul Huda managers, PKBM Sabilul Huda educators, and student representatives. Data were collected using interviews, documentation and documentation and analyzed using the triangulation model. The research results show that management at PKBM Sabilul Huda is quite good from several aspects such as antecedents (supporting factors), transactions (learning processes), and outcomes (results achieved).

Social media (social media) has now become a part of the life of Indonesian people who are very phenomenal. Various kinds of advantages and conveniences are offered to interact with everyone both in terms of business even from various circles. Not only that, with the development of internet use and communication technology devices such as smartphones that are increasingly advanced, it has become one of the drivers of the growth of new networking sites that offer friends and information online. Social media has also become the backbone as a means of communication in this digital century. This study aims to determine students' perceptions about the extent of the use of social media in helping them learn English. English that is expected to be understood and learned is English in hospitality and also in advertising language. English that is expected to be understood and learned is English in hospitality and also in advertising language. This research is important to find out how students perceive the effectiveness of using social media to support their learning and understanding and creativity in the field of English for Hospitality and in compiling advertising language. A total of 50 students from the English Literature study program of Udayana University will be used as data sources in conducting this research. This research will use qualitative methods with a case study design. The use of questionnaires as well as semi-structured interviews will be carried out in collecting data. In analyzing the data will use a basic statistical model of the results of questionnaires on students. Meanwhile, the results of the interview data will be analyzed with the Flow model from Miles and Huberman.

The absence of student textbooks in the new Creative and Entrepreneurial Project subjects in accordance with the current Merdeka Curriculum causes students to be less familiar with Creative and Entrepreneurial Project material. Therefore, researchers developed an Augmented Reality-Based Creative and Entrepreneurial Project Teaching Book. The research conducted is a type of research and development (research and development). The product development model uses the ADDIE model which consists of Analyze, Design, Development, Implementation, and Evaluation. The development of textbooks uses augmented reality as a supporting media in textbooks. This research design adapts the One Group Pretest Posttest Design, with data collection techniques using questionnaires, observations, and tests. The research subjects involved 28 students of class XI Audio Video Engineering 2 at SMK Negeri 1 Kediri and validators consisting of two lecturers in the Electrical Engineering Education Study Program, and one teacher teaching Creative Projects and Entrepreneurship subjects at SMK Negeri 1 Kediri. The results showed that the level of validity of the textbook in terms of expert assessment was 91% with very valid criteria. The level of practicality of the book in terms of students' responses was 93% with very practical criteria. Learning outcomes with multiple choice tests showed an average pretest score of 64.64, while the average posttest score was 88.04. Based on the Wilcoxon test which shows the difference or increase in pretest and posttest scores has a significance value of 0.000. The significance value of the calculated results thus falls in the H0 rejection area because the significance value of 0.00 <0.05, in other words that the pretest and posttest scores have a significant difference or increase. Based on the calculation and analysis of student learning outcomes data, it can be concluded that the Augmented Reality-Based Creative and Entrepreneurial Project Teaching Book developed is effective in improving student learning outcomes.

In this research, a machine learning approach, especially a decision tree model, is implemented to improve the analysis and visualization of weighbridge data in Indonesia. The evaluation results show that the decision tree model provides better insight in predicting the carrying capacity, dimensions and loading procedures of vehicles. The advantage of this model lies in its combination of low Mean Squared Error (MSE) and high R-squared, indicating its effectiveness in capturing data variance and providing accurate predictions. The use of decision tree models can be a valuable tool in improving the visualization of bridge weighing data, allowing users to gain additional insights and understand the complex dynamics within the data. In addition, the model's adaptability to various types of data makes it a versatile analysis tool. The positive implications of using this model open up opportunities to understand more deeply the logic of predictions and make more informed decisions. As a suggestion, increasing the number and quality of weighing equipment, wider application of information and communication technology, human resource training, and cross-sector collaboration can further strengthen weighbridge management in Indonesia.

This study aims to analyze the project-based learning model on learning outcomes in class XII Manufacturing Engineering Drawing subjects at SMK Semen Padang. The type of research used in this study is Quasy experimental using one experimental class and one control class. The study involved 20 experimental class students and 20 control class students. Data was collected with test questions in the form of pre-test and post-test to determine learning outcomes in aspects of Knowledge (cognitive), and assessment of student performance to determine learning outcomes in aspects of skills (psychomotor). Analyze the initial data to determine the average of the classes to be used for the determination of the experimental class and the control class. The final data analysis used is the T test. The results showed a significant influence on learning outcomes using a project-based learning model. The results of the T test on the Post-test results obtained a sig (2-tailed) value of 0.004 which is smaller than 0.05 with an average percentage of 71.8 in the Experiment class and 65.1 in the control class. For the T Test on student performance assessment, a sig (2-tailed) value of 0.027 is obtained which is smaller than 0.05. Both T-tests prove that project-based learning models can provide better learning outcomes.

The purpose of this study is to ascertain how fourth grade students at SDN Keleyan 2 are impacted in terms of their mathematical literacy by realistic math instruction grounded in Madurese ethnomathematics. This is a quantitative study using an experimental research design; a quasi-experimental design and a nonequivalent control group design are the types of research designs employed. 48 SDN Keleyan 2 class IV students served as samples. Classes experimental and control were employed in this study. In this study, tests of mathematical literacy and observation were used as data gathering methods. The data analysis includes an independent sample t-test for hypothesis testing, homogeneity testing, and a prerequisite test utilizing the normality test. Ho is rejected and Ha is approved based on the findings of the independent sample t-test data analysis, which showed that t-test = 7,757 > t-table = 2,012. As a result, it was determined that fourth grade pupils at SDN Keleyan 2 had significantly higher mathematical literacy levels when the model realistic mathematic education learning based on Madurese ethnomathematics was applied.

The Cyber-Physical System is a key system in the implementation of the 4th generation industrial revolution. This system combines automation systems, electronics, internet networks and machine learning. The implementation of physical cyber systems in agriculture  is one of the long-awaited applications because it is the backbone of the implementation of  sustainable agribusiness systems. With this system precision agriculture and pervasive computing in agriculture can help stakeholders in agribusiness to enjoy various benefits optimally. One example of its application is a smart farming system that is conditioned to provide measurable and maximum yields without having to sacrifice soil nutrients because it is well monitored according to weather conditions.  In previous studies, several LoRa communication-based systems for monitoring local weather in a place and measurements of soil nutrient conditions have been carried out and displayed through the internet network. Monitoring and control systems on other agricultural models based on hydroponics and aquaponics have also been carried out for some types of crops. The results provide greater potential for wider application and in actual conditions in the agricultural industry. In this study, the integration of physical cyber systems with lora communication-based  agricultural monitoring and control nodes will be carried out more broadly by considering the local conditions under which the system is tested. In this case, the research will be carried out at the Research and Recreation Park, Telkom University and agrifarming industry partners as a model of actual application. The research findings show that the application of advanced sensor technology has improved the accuracy of weather measurements by up to 95%. Quantitative data collected from the new weather station showed a significant improvement in weather monitoring. Qualitatively, positive responses from stakeholders such as disaster management authorities and farmers were also noted. In conclusion, the development of this modern weather station supports the community's need for reliable weather information and is a step forward in addressing the challenges of climate change.

This research aims to determine the application of the Cooperative Integrated Reading and Composition (CIRC) model in learning to write personal letters for class VII students at SMPN 1 Gunungwungkal Pati. Based on the results of observations, there is a problem with class VII students at SMPN 1 Gunungwungkal Pati, namely that students still have difficulty using the right words and writing a message on personal letter writing material, because the learning model used by the teacher is not appropriate. This research uses mixed methods. Data collection was carried out using test and non-test techniques. The test technique is in the form of working on personal letter writing test questions, and the non-test technique is in the form of observation and questionnaires. Based on the research results, before implementing the Cooperative Integrated Reading and Composition (CIRC) model in learning to write personal letters, teachers still used Discovery Based Learning techniques for the learning process of writing personal letters and only used Indonesian language textbooks as learning support materials. The application of the Cooperative Integrated Reading and Composition (CIRC) model has proven that students are more active during learning. The (CIRC) model also makes students more enthusiastic and makes it easier for students to understand the material for writing personal letters.  

Collaborative learning is learning that involves students by forming small groups that work together to solve problems that aim to encourage students to play an active role and be able to think critically during learning. The characteristics of the collaborative learning model are considered to be able to train students' stimulus so that it can train and improve students' critical thinking skills. Collaborative learning is expected to be able to improve thinking skills and high thinking skills, especially critical thinking skills. Based on the results of the articles we have reviewed, it shows that collaborative learning that is applied can significantly provide benefits in improving thinking skills. However, there are some challenges that must be addressed such as time management of collaborative learning implementation and ensuring that all students get the same opportunity as other students.

The importance of using media in the mathematics learning process has become the main focus in increasing the effectiveness and attractiveness of learning. One interesting approach is the development of opportunity card-based learning media. This research aims to develop and release opportunity card media as a mathematics learning aid that can increase students' understanding of concepts and interest in learning. This media development is carried out through the stages of requirements, design analysis, development and evaluation. The research method used is development research using the Kemp model which includes several stages, such as needs analysis, planning, development, implementation and evaluation. Each stage has specific steps that help process developers design and organize learning materials more effectively. The research subjects involved class XII students at SMA Negeri 62 Jakarta. The research results showed that the opportunity card media developed received a positive response from students and teachers. Understanding of mathematical concepts increased significantly, and students' interest in learning also increased. and also provide an interesting learning experience and can increase student involvement in learning.

The importance of using media in the mathematics learning process has become the main focus in increasing the effectiveness and attractiveness of learning. One interesting approach is the development of opportunity card-based learning media. This research aims to develop and release opportunity card media as a mathematics learning aid that can increase students' understanding of concepts and interest in learning. This media development is carried out through the stages of requirements, design analysis, development and evaluation. The research method used is development research using the Kemp model which includes several stages, such as needs analysis, planning, development, implementation and evaluation. Each stage has specific steps that help process developers design and organize learning materials more effectively. The research subjects involved class XII students at SMA Negeri 62 Jakarta. The research results showed that the opportunity card media developed received a positive response from students and teachers. Understanding of mathematical concepts increased significantly, and students' interest in learning also increased. and also provide an interesting learning experience and can increase student involvement in learning.

The Preparing Classroom Action Research (PTK) for the Classroom Therefore, this study aims to enhance motivation in learning arts and culture  using the Osborn learning model. This type of research consists of two cycles and each cycle has four phases, viz. The subjects of this study are 32 students of class X AK 3 of SMK Negeri 2 Denpasar. This study was conducted from October to November 2023. The data analysis technique used was qualitative descriptive analysis using the Osborn learning model to examine the results of evaluating student presentations. by comparing learning outcomes with average completion scores. Research results  show that the results of learning art and culture subjects in grade X AK 3 gradually increase from  cycle 1 to  cycle 2. This is clearly shown through the average increase obtained from the assessment results. present. The average score of the first semester class is 79, of which the highest score is 88 and the lowest score is 68. Meanwhile, in the second semester, the average score of the class is 87,  the highest score is 93 and the lowest score is 82.