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This study aims to improve the mathematics learning outcomes of 4th grade students of SDN Dukuh Kupang V, Panguragan District, Cirebon Regency Semester 2 of the 2022/2023 academic year by using the Problem Based Learning model. This research is a classroom action research (PTK) conducted in two cycles. The subjects in this study were 4th grade students of SDN Dukuh Kupang V Surabayai, totaling 30 students. The variables in this study consisted of independent variables, namely the Problem Based Learning model and the dependentvariable, namely math learning outcomes. Data collection techniques using test techniques. Data analysis techniques using comparative descriptive in the form of percentages of math learning outcomes in pre-cycle, cycle I and cycle II. Based on the results of the study, it can be concluded that learning with the Problem Based Learning model can improve learning outcomes in mathematics subjects on the perimeter area of flat shapes. The results before the action was taken,namely in the pre-cycle only 13 students or 43% were complete, in cycle I increased to 21 studentsor 70% who completed learning math and in cycle II increased again to 26 students or 86% who completed learning. This research is said to be successful because it reaches the performance indicator which is > 80% of all students with KKM 70.

This research aims to determine whether the development of teaching materials using the Kvisoft flipbook maker application on linear program material, the sub-material of linear inequalities in two variables, affects learning outcomes. This research method uses research and development, with 25 students as subjects. The research results show that in the effectiveness test, it was found that 21 out of 25 students were declared complete in learning mathematics using teaching modules using Kvisoft flipbook maker on linear program material developed by the author. Meanwhile, Class So's teaching module developed in this research was effective.

When learning mathematics, students sometimes experience errors in understanding concepts, data, procedures, and principles, especially in algebraic operations. This research analyzes students' errors in solving mathematics problems on algebraic operations material. The research method used is a descriptive method with a qualitative approach. The research subjects were class VIII students at SMP Negeri 4 Kawangkoan. The instruments used were written tests, interviews, and expert validation. Data analysis techniques use qualitative techniques, including data collection, reduction, and conclusion. The conclusions obtained include that students experience three types of errors in solving mathematics problems: data errors, theorem or definition errors, and technical errors.    

Improving the quality of education in Indonesia can be developed through the implementation of educational reform. One form of educational reform can be carried out by using a learning approach that can help teachers produce experts using the STEM (Science, Technology, Engineering, and Mathematics) approach. Initial findings reveal that only around 47.8% of SMA N 2 Medan students (class This research aims to see the effectiveness of the STEM approach in improving the critical thinking skills of SMA N 2 Medan students. The research method used is an experimental design with Non Equivalent Control Group Design. The research subjects were students of SMA N 2 Medan. The results showed that the sig (2-tailed) Equal variances value was assumed to be 0.000 < 0.05. Therefore, Ho is rejected and Ha is accepted, which means there is a significant difference in critical thinking abilities after students use the Equal variance method. The STEM-PBL approach, compared with the innovative K13 approach. The average critical thinking skills scores of the control class in the pre-test and post-test were 38 and 79.5. The coefficient remains at 0.676 and is significant at 0.000. This means the correlation is positive. Therefore, learning with a STEM approach has proven to be effective in improving the critical thinking skills of SMA N 2 Medan students.  

During the period of compulsory education in Indonesia, which is 12 years, the government requires mathematics as the main learning subject for extracts which will continue to have an impact on people’s lives. The level of ability in a field of science must be measured to obtain valid data for the development of education in Indonesia. The use of Geogebra Mathematics Software in schools in Indonesia is not surprising at this time, technological developments have made the use of Geogebra mathematics software commonplace. This research is a Systematic Literature Review, in this research the author analyzes and compares several articles obtained from the internet or digital databases, for example Semantic Scholar or Sprinter Link. The articles that have been found are then selected according to the title researched, so that several reference articles are obtained. The research results show that the use of Geogebra mathematics software in learning has a great influence on students’ computing abilities. Geogebra is a media with a visual, analytical and numerical approach that can be solved using algorithms that require computational capabilities to operate. There is empathy in computational thinking, namely algorithmic thinking problem solving, pattern recognition, and abstraction and generalization.

This research aims to see how the utilization of geogebra application in learning mathematics. The method used in this research is Systematic Literature Review (SLR). The results obtained in this study are geogebra has benefits for the subject matter of algebra, building space, geometry, space analytic geometry, transformation geometry, integral, statistics, pythagorean theorem, and trigonometry. The use of geogebra allows students to be actively involved in problem solving, increase interest in learning, and expand understanding of mathematical concepts. For teachers, geogebra helps in creating interesting learning materials, visualizing mathematical concepts more clearly, and simplifying the preparation of questions

During the period of compulsory education in Indonesia, which is 12 years, the government requires mathematics as the main subject of external learning which will continue to have an impact on people's lives. The level of ability in a field of science must be measured to obtain valid data for the development of education in Indonesia. The use of Sagemath Mathematics Software in schools in Indonesia is not surprising at this time, technological developments have made the use of Sagemath Mathematics Software commonplace. The research method used in this research uses a literature study research method where researchers research the results of previous research. In groups There were 55.88% of experiments that experienced an increase (normalized gain) in the high category and 44.22% were in the medium category. Meanwhile, the average increase (normalized profit) in this group was 0.71, which is included in the high category. The results of this study concluded that students' abilities in mathematical computational thinking on Sagemath software are very high, this is due to several factors between the tendencies of students' desires and creativity of the teaching profession. Students' computing abilities when using Sagemath software can be done through students' mathematical algorithm features.    

This research aims to analyze students' errors in solving mathematics problems on Systems of Linear Equations in Two Variables according to the Newman procedure. This research was conducted in class VIIIA of St. Catholic Middle School. Johanis Laikit. This type of research uses descriptive qualitative. The methods used in collecting data were written tests and interviews. The written test was given to class VIIIA students, totaling 18 students as subjects, the test questions consisted of 3 essay questions. Based on the test results, 5 students were selected based on different mistakes to be interviewed. The research results showed that from the 3 questions given, the majority of students made mistakes in answering SPLDV story questions using the Newman procedure as shown in the test results, namely errors in writing the final answer with a percentage of 74.07%, process skills errors with a percentage of 66.66%. , transformation errors with a percentage of 48.14%, understanding errors 35.18%, and reading errors 25.92%.

This study tries to identify the faults and circumstances that lead students to miscalculate when attempting to solve word problems involving a system of linear equations with two variables using Watson's criteria. This kind of study employs qualitative, descriptive research methods. Data was gathered using a variety of methods, including analysis, interviews, documentation, and a written test with five-item description questions. Class VIII students from SMP Negeri 5 Tondano 2022/2023 served as the study's sources and subjects. They were chosen after careful consideration. Data analysis techniques in this study through data reduction, data presentation, and conclusions. The results showed that the students' errors were incorrect data, inappropriate procedures, response level conflicts, and skills hierarchy problems. The causative factors are that students are not careful when writing answers, students think that conclusions do not need to be written down, students forget how to change the story form questions into the form of mathematical models or the principles used are still wrong, students forget to write examples, students are wrong in operating numbers either subtraction, addition, division and multiplication, students forgot to write conclusions, students were unable to write down existing data, students did not know how to answer questions, students forgot to find x and y values using the substitution method, students used wrong marks in mathematics, students ran out of time when solving problems.

The research was conducted to determine students' mathematical communication skills and their influence on mathematics education, consisting of 3 questions about number patterns. The instrument has gone through question validation, then given to class VIII students at one of the Pekanbaru MTS with procedures including: 1). Planning, 2). Implement, and 3). Assessing Results. The subjects in this research were 14 eighth grade students from the MTS Pekanbaru school. The approach to this research is descriptive and quantitative, and uses data collection techniques such as observation, data collected from test instruments, and errors in completion. The student's communication skills are in the "medium" category as shown by the research results.

This research aims to analyze the effect of using Web Wordwall in training students' computational thinking skills in mathematics learning with a qualitative approach. The research subject is the Director General of Teachers and Education Personnel, while the object is education that is liberating and pro-student. Data obtained from online and offline information sources is recorded in a structured manner, then analyzed to be synthesized into a systematic conceptual framework. Conclusions are drawn by taking the essence of the conceptual framework that can answer the research questions posed. The research method used is a case study with a focus on participatory observation, in-depth interviews and document analysis. Data was collected through literature study and analysis of learning materials. Data analysis was carried out using an inductive approach, by looking for patterns of findings and main concepts from the data collected.

This research aims to analyze the effect of using Web Wordwall in training students' computational thinking skills in mathematics learning with a qualitative approach. The research subject is the Director General of Teachers and Education Personnel, while the object is education that is liberating and pro-student. Data obtained from online and offline information sources is recorded in a structured manner, then analyzed to be synthesized into a systematic conceptual framework. Conclusions are drawn by taking the essence of the conceptual framework that can answer the research questions posed. The research method used is a case study with a focus on participatory observation, in-depth interviews and document analysis. Data was collected through literature study and analysis of learning materials. Data analysis was carried out using an inductive approach, by looking for patterns of findings and main concepts from the data collected.

This study aims to find out how students apply the four foundations of computational thinking in solving mathematics problems and whether students have applied computational thinking in solving mathematics problems. The research was conducted using an analytical approach to examine the results of solving mathematics problems. This approach involves collecting data from various sources, including tests, quizzes, or assignments given to research subjects. The collected data was then analyzed comprehensively to identify the use of four foundations of computational thinking in the process of solving mathematical problems. The results of this research are that students apply the four foundations of computational thinking. Decomposition by writing down what is known and looking for what is needed in the problem. Pattern recognition by understanding what is known and asking then using the right formula. Abstraction by writing formulas, ignoring what is not needed in the problem, and simplifying the answer. Algorithm by entering the required values into the formula then calculating them and solving the problem in the correct sequence of steps. Even though students make mistakes when solving mathematics problems, students can apply the four foundations of computational thinking.    

Computational Thinking skills are students' ability to use mathematical concepts to solve problems systematically using algorithms and programming. This research aims to measure the development of Computational Thinking skills of students at SMA N 3 Medan on algebraic function limits material. The research method used is survey research with data collection using tests and observations. The subjects of this research were class XI students from SMA N 3 Medan who were studying algebraic function limits. The research results show that there is significant development in students' Computational Thinking skills after studying the material. The implication of this research is the need for a learning approach that focuses more on developing Computational Thinking skills in mathematics learning in high school.

This research was conducted at SD Negeri Karyabakti IV, aimed to determine whether the cooperative learning model of STAD (Student Teams Achievements Divisions) could enhance mathematics learning outcomes on the topic of mixed operations of integers for fourth-grade students at SD Negeri Karyabakti IV. The subjects of the study were 37 fourth-grade students consisting of 22 male students and 15 female students. Data collection was carried out through observations conducted by the school principal and peers, and also by assessing students' mathematics learning outcomes through written tests. The results of this study can be summarized as follows: 1) The Student Teams Achievement Divisions (STAD) learning method applied by the researcher to fourth-grade students at SD Negeri Karyabakti IV, focusing on the topic of mixed operations of integers, could enhance students' mathematics learning outcomes. This can be seen in the improvement of students' mathematics learning outcomes from the pre-cycle stage with a KKM completeness rate of 10.81%, which increased to 45.54% in the first cycle and further increased to 72.97% in the second cycle. 2) The mathematics learning using the Student Teams Achievement Divisions (STAD) method also improved teacher performance.

This service aims to explain the increase in mathematics learning outcomes in multiplication material by applying the fast mathematical multiplication method in class XII at MA Darussalam Manuju. Data collection techniques use observation, interviews and documentation techniques. The method used was classroom action research, the research subjects were teachers and 15 class XII students. Instruments include interview sheets, observation sheets and learning results test sheets. using the Kemmis and Mc Taggart research design model. The results show that the application of the fast mathematical multiplication method can improve students' mathematics learning outcomes and understanding of multiplication. This can be proven based on the percentage results of cycle I and cycle II. The percentage of 0% in the very good category in cycle I increased to 60% in cycle II.

In learning activities, motivation is an encouragement or process to direct students in achieving learning goals. The research was motivated by the very diverse problem of students' learning motivation in mathematics subjects in class XI TFLM-3 SMK Negeri 5 Surabaya. This can be seen from the results of the researcher's observations, where when they are about to start learning activities, many students still think that mathematics is less interesting and boring so that students are always less ready to start learning mathematics and the learning that was usually carried out by previous mathematics teachers was just learning. just lectures and assignments. This research aims to determine the increase in students' learning motivation in mathematics subjects through differentiated learning based on content. This research uses a type of Classroom Action Research (PTK) which consists of two cycles using data collection techniques in the form of questionnaires and observation. This questionnaire is used to determine learning satisfaction that motivates students after carrying out learning strategy treatment. The results of research using differentiated learning based on content show an increase in students' learning motivation from pre-cycle activities 63,8% to 73,1% in cycle I, then continued with cycle II. It shows that the presentation average of students' learning motivation in mathematics subjects is 83,2% From the results of this research it can be concluded that using differentiated learning based on content is successful in increasing students' learning motivation in mathematics subjects in class XI TFLM-3 SMK Negeri 5 Surabaya.    

In Indonesia, the main focus of current education reform efforts is the Merdeka Curriculum. Mathematics is one of the subjects that has undergone many changes, especially at the elementary school (SD) level. This study investigates the impact and challenges that arise when implementing Merdeka Curriculum in mathematics learning at the primary level. The purpose of this study is to provide insights and details regarding the challenges associated with learning mathematics. This research uses a qualitative descriptive methodology that combines two methods to explore information at SDN 012 Babakan Ciparay, Bandung City, which leads to the implementation of the Merdeka Curriculum. The research results obtained in this study found that there were difficulties in implementing the Merdeka Curriculum in students as well as teaching staff, especially in the application of mathematics learning. However, this does not significantly affect the effectiveness of learning and the interest of students and teaching staff.

The concept of algebra is very important in learning mathematics, students' ability to understand advanced mathematics lessons depends on mastery of algebraic concepts. Therefore, it is necessary to analyze the errors that often arise when students solve algebra problems. The purpose of this study is to analyze the errors of vocational students in class XI in solving algebra problems. This research uses a qualitative method that is analyzed descriptively. The research subjects were 28 students of class XI with the object of research, which is the errors that arise when students solve algebra problems. The results showed that based on Kastolan's Theory, procedural errors occur most often, followed by technical errors, and concepts.

This study aims to determine whether the NHT type cooperative learning model with the help of LKPD can improve student learning outcomes in grade X of SMA Negeri 1 Stabat. This type of research is Classroom Action Research (PTK) or action research which consists of 2 cycles, where each cycle consists of 1 meeting. The subjects in this study were students of grade X Science 1 SMA Negeri 1 Stabat consisting of 36 students. The object of this study is the results of student learning with the application of the Numbered Head Together type cooperative learning model with the help of Student Worksheets in grade X Science 1 SMA Negeri 1 Stabat. From the results of the study can be concluded the following: (1) There is an increase in students' mathematics learning outcomes. This can be seen by the achievement of classical completeness in the initial test obtained 30.56%, in the learning outcome test I increased to 61.11%, and in the learning outcome test II increased to 86.11%, so that based on the results of the data analysis it was obtained that this study had reached the specified success indicators. (2) After the implementation of the Numbered Head Together learning model with the help of Student Worksheets, students' mathematics learning outcomes have been classically completed to 86.11%.