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This research aims to describe the application of the Student Team Achievement Division (STAD) learning model in improving the learning outcomes of class XI-4 students at SMA Negeri 6 Surabaya, especially on the subject of vectors. The background to this research is strengthened by the fact that motivation to learn mathematics tends to be low, especially when studying complex material such as vectors. This is supported by initial observations which show that students often have difficulty understanding these concepts, which is reflected in the low learning outcomes, with a percentage of only 73%, and classical completeness of only 40%. This research is classroom action research carried out in two cycles. The research subjects consisted of 36 students. Data is collected through tests and observations. Data analysis was carried out using qualitative and quantitative descriptive techniques. The results in cycle 1 showed a significant improvement, with learning outcomes reaching 97% and classical completion increasing to 94%. In cycle 2, learning outcomes reached 98% and classical completion reached 100%. Thus, it can be concluded that the application of the STAD learning model is effective in improving the learning outcomes of class XI-4 students at SMA Negeri 6 Surabaya.        

Instructional media plays a crucial role in achieving educational objectives. Educators need to develop teaching strategies using various appropriate media and learning resources. Currently, GASING mathematics instructional media only consists of modules, PowerPoint, and teaching aids. This indicates the untapped potential in utilizing instructional media such as animated videos as engaging and effective learning tools. Based on this issue, the researcher employed the GASING method in the subject of mathematics, specifically focusing on multiplying 2-digit numbers by 1-digit numbers. This study aims to ascertain the development process and feasibility of animated videos using Powtoon. These animated videos were developed using the ADDIE model. Based on validation results by language experts, an average of 98.33% was obtained, while content experts yielded an average percentage of 78.18%. Furthermore, media experts achieved an average percentage of 90.67%, and individual trials (One to One) resulted in an average percentage of 85.64%. Based on the validation results by experts, it can be concluded that animated video instructional media using Powtoon in mathematics with the GASING method as the developed instructional media is highly suitable for field use, as evidenced by the average percentage of feasibility obtained being 88.21% (very feasible).  

Numeracy markets are activities that imitate market situations that are closely related to everyday life. Students are given the opportunity to design, manufacture, market, and sell goods. This research aims to help students improve their numeracy skills, increase their understanding of basic mathematical concepts, and improve their social skills and creativity through numeracy market activities. This type of research is descriptive with a qualitative approach. The research subjects consisted of fifth grade students at UPTD satdik SDN Curahtakir 4. The stages in this research included observing placement schools and their problems, designing activities as solutions to problem solving, carrying out AKM pretests, carrying out numeracy market activities, carrying out AKM posttests, and then analyzing and evaluating . The research results show that it is very suitable for elementary school (SD) students because it offers new experiences in interpreting mathematical concepts. This numeracy market activity also has a positive impact on improving student learning outcomes in the context of mathematics. Apart from that, the findings from this research are that the AKM numeracy post-test scores for class V students have increased compared to the previous AKM numeracy pre-test scores.

Student learning outcomes in learning fractions in elementary school are still low, to overcome this problem an effective model is needed. This research aims to describe the improvement in learning outcomes for multiplication and division of fractions using the PBL model in class V of SD Negeri 057761 Kwala Gebang. The research was carried out in two cycles, namely cycle I and cycle II. Each cycle consists of four stages, namely planning, implementation, observation and reflection. The subjects of this research were 7 class V students at SD Negeri 057761 Kwala Gebang. Research results: RPP observations in cycle I averaged 83.33%, increasing to 97.22% in cycle II. In the observation results from the teacher aspect of cycle I, the average was 73.21%, increasing to 96.42% in cycle II. In the observation results from the student aspect of cycle I, the average was 64.28%, increasing to 92.85% in cycle II. Meanwhile, the learning outcomes of students in cycle I obtained 54.54% completeness, increasing to 95.45% completeness in cycle II. It can be concluded that the PBL model can improve student learning outcomes in learning multiplication and division of fractions in class V of SD Negeri 057761 Kwala Gebang.

Education serves as a crucial foundation for fostering collaborative skills among students, particularly in subjects requiring in-depth understanding such as mathematics. This research aims to investigate the impact of implementing the Jigsaw Learning Model in enhancing the level of collaboration among students in the context of mathematics learning. The Jigsaw Learning Model, introduced by Aronson and Patnoe (2011), emphasizes collaboration and active involvement of students. This method involves collaborative learning where each student is responsible for a portion of the learning material and must collaborate with their peers to comprehend the entire concept. This study explores the effectiveness of this model in improving collaboration among students in mathematics learning. Through an experimental research design, data is collected through classroom observations, interviews, and document. Data analysis is conducted to measure changes in the level of student participation, understanding of mathematical concepts, and their perceptions of collaborative learning. The results of this research are expected to provide valuable insights for educational practitioners and researchers regarding the potential of the Jigsaw Learning Model in enhancing student collaboration in the context of mathematics learning.

This study assesses the effectiveness of peer tutoring programs in enhancing students' performance in STEM subjects (Science, Technology, Engineering, and Mathematics). A longitudinal analysis of a peer tutoring initiative in a high school setting revealed significant improvements in both the academic performance of tutees and the tutoring skills of peer tutors. The research highlights the mutual benefits of peer tutoring, with tutees gaining better understanding of STEM concepts and tutors reinforcing their own knowledge. The findings suggest that peer tutoring is a valuable pedagogical tool in STEM education.

Background: Mathematics is a very important subject to study. Mathematics lessons include the development and use of concepts such as numbers, formulas, geometry, and algebra to understand and explain phenomena in various contexts. To improve the quality of students' mathematics learning, it is necessary to develop material through a learning method which is expected to improve students' abilities in solving mathematical problems. Method: The research design is "Pre-Experimental Whithout Control Group Design". The population in this study was the fourth grade students of SD Negeri 2 Muara Aman, totaling 25 people. The sampling technique in this study used a total sampling technique where the entire population was sampled, namely 25 people. The results of this research were analyzed using the Paired t-test using SPSS 22 software. Results: The average mathematics score of respondents increased after being given the intervention by 51.13. Result: The results of the Paired T Test showed a p value of 0.000< α=0.05. Conclusion: The conclusion of this research is that there is an influence of the drill method on improving mathematics learning outcomes for fourth grade students at SD Negeri 2 Muara Aman in 2023. It is hoped that the results of this research will become a reference for teachers in developing effective learning methods to increase students' motivation and enthusiasm in learning interesting mathematics subjects. positive impact on increasing elementary school student learning achievement.

This study was motivated by the low mathematics learning outcomes and cooperation skills of fourth grade students of SD Negeri Koroulon 1, so the purpose of this study was to improve mathematics learning outcomes and cooperation attitudes of students by using the Problem Based Learning model. The type of research used is Classroom Action Research (PTK) which is carried out in two cycles. the subject of this research is grade IV students. The instruments in this study used test and non-test instruments. Evaluation tests were used to collect data on student learning outcomes, while observation sheet instruments were used to collect data on student cooperation. the results of this study indicate an increase in learning outcomes as seen from the percentage of completeness from 42.1% to 84.2% at the end of cycle II. The increase also occurred in the average value of student cooperation from 51.2 to 74.89 at the end of cycle II. Based on these results, it can be concluded that the Problem Based Learning model can improve students' math learning outcomes and cooperation.

Mathematics and Physics are subjects that are not only difficult for students but also difficult to do Teacher. To make it easier to understand the material, Geogebra software is used. In the community service, Geogebra training is given to high school teachers in the field of Mathematics and Physics teacher in Jambi City. The training was carried out online involving 10 lecturers and 5 assistants. The training consisted of 4 sessions carried out over 2 days by 31 Mathematics and Physics teachers. Training is divided into 2 classes for more effective. From the results of the training, the ability to use Geogebra increased by 38.05%. The average level of participant satisfaction with the implementation of the research was 4.15 in (a scale 5)

This research was conducted to seek evidence, answer questions and determine the clarity and certainty of how much influence the results of the application of  Structured  Dyadic Methods have on Mathematical Concepts Understanding of Students in Junior High School 5 in Jambi City. This study is a quantitative research methods, namely posttest only control design. the sample was taken by using the simple random sampling techniques. While the data was collected using the  mathematics concept comprehension test instruments. The research sample consisted of 20 students as an experimental class using the Structured  Dyadic Methods, and a total of 20 students as a control class using Direct Instruction Method. From the data described, it was found that the maen value of the experimental group is  and a standard deviation of , while the mean of the control group was and the standard deviation was 9,74. The results of the calculation of the t test value of the t test with a significant level of 5%  while 1% and obtained . Because the value of  is . While the correlation  is obtained 0,55 and after comparing between  it turns out   (Both at the 5% and 1% significance levels)  The alternative hypothesis  is acceptedwhich means that there is a difference between the Structured  Dyadic Methods Matchin the ability to understand mathematical concepts of students at Junior Hight School students 5 Jambi City.  

This research aims to determine students' ability to understand mathematical concepts through the application of the Realistic Mathematics Education learning approach and to find out how the students' answers process in solving problems on tests of students' ability to understand mathematical concepts after applying the Realistic Mathematics Education learning approach in class VIII-1 of SMP Nurul Islam Indonesia Medan. This type of research is classroom action research through cyclical learning stages. The subjects of this research were 13 students in class VIII-1 of SMP Nurul Islam Indonesia Medan and the object of this research was the students' ability to understand mathematical concepts by applying the Realistic Mathematics Education learning approach to statistical material. Based on the research results, it was found that by applying the Realistic Mathematics Education learning approach, students' ability to understand mathematical concepts in statistical material in class VIII-1 at Nurul Islam Indonesia Middle School in Medan was improved, namely in cycle I the average student ability was only 30.76 with a completion percentage of only 8% of students completed. In cycle II the average student ability increased to 92.95 with a student completion percentage of 100%, so that students had met the classical completion percentage, namely ≥85%. The results of this research show that by applying the Realistic Mathematics Education learning approach to statistics material in class VIII-1 of Nurul Islam Indonesia Middle School in Medan, students can improve their ability to understand mathematical concepts.

Mathematical literacy is a person's ability to formulate, use and interpret  mathematics in various contexts of daily life problems efficiently. Literacy skills students not only have numeracy skills but also the ability to think logically and critically in solving problems. Mathematical literacy has a significant positive impact on students' critical thinking abilities. This research aims to describe the influence of mathematical literacy on students' critical thinking abilities in mathematics subjects. The method used in this research is a literature review. The results of this research show a strong relationship between mathematical literacy and critical thinking skills. Mathematical literacy involves understanding, using, and interpreting mathematical concepts in a variety of concepts, while critical thinking skills involve analysis, evaluation, and rational decision making. Mastery of mathematical literacy can improve students' critical thinking abilities, because mathematics involves problem solving and logical reasoning. Thus, developing mathematical literacy can contribute to improving students' critical thinking abilities

Students’ understanding of concept can be measured and assessed using mathematical concept understanding test instruments. The instrument to be used must be prepared to meet the criteria for a good instrument. Therefore, the aim of this research is to determine the validity and reliability of students' conceptual understanding questions in learning assessments. This type of research is qualitative research using descriptive methods. Data was obtained through tests and interviews with mathematics subject teachers. The subjects in this research were class IX students at MTsN 2 Kerinci, totaling 22 students in 1 class. Based on the results of validity calculations using the Pearson Product Moment formula and t test, as well as calculations of question reliability using the Cronbach's Alpha formula, it was found that each question item was valid and reliable, so this test instrument can be used to measure students' ability to understand mathematical concepts.

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.

High Order Thinking Skill (HOTS) is a way of thinking for students at a higher cognitive level. This research aims to prove whether the implementation of HOTS-based learning has an impact in improving students' critical thinking skills in mathematics learning in elementary schools. The research method used is a literature review using the Google Scholar and Semantik Scholar databases for the 2020-2023 period. The HOTS-based learning model focuses on developing analyzing, evaluating and creating which refers to students' abilities in critical thinking. Based on the 8 selected articles, it shows that the implementation of HOTS learning in mathematics subjects can be implemented through learning models such as Game Based Learning or Digital Game Based Learning, teacher skills in implementing learning and developing assessments need to be considered. The application of HOTS learning is considered effective and able to improve students' critical thinking skills.

Understanding concepts is very important in learning mathematics, because with a thorough understanding, students can solve a problem and are able to apply this learning to the real world. This research aims to develop and test the validity of conceptual understanding ability questions on set question material in Class VIID MTsN 2 Kerinci. This type of research uses development research. The research subjects were class VII D students consisting of 26 students. The data collection techniques used were tests, interviews and documentation. The results of the research show that students have a very good understanding of concepts. It can be seen from the results of the analysis of the test question data that it can be seen that there are 8 students (22.9%) included in the category of having the ability to understand concepts very well, 5 students (14.3%) included in the category of having the ability understanding of the concept was good, 7 students (20.0%) were in the sufficient category, and 5 students (14.3%) were in the poor category. This means that overall there are 8 students out of 25 students who have the ability to understand concepts in the very good category. This shows that set material questions have a potential effect on students' ability to understand concepts.

This study was aimed to develop mobile learning media for students' learning interests at SMP Negeri 18 Medan which meet valid, practical and effective criteria. The research method used is the ADDIE development model which has 5 stages, namely: analysis, design, development, implementation and evaluation. The subjects of this study were 35 students of class IX-2 at SMP Negeri 18 Medan. The results showed that: (1) the development of mobile learning media for students' interest in learning mathematics met very valid criteria with an average percentage of 86.91% based on validation by media experts and an average percentage for material of 83.25% based on validation by material experts; (2) the development of mobile learning media for students' interest in learning mathematics meets practical criteria with an average percentage of 80.47% based on student response questionnaires to learning media; (3) the development of mobile learning media for students' interest in learning mathematics meets the criteria of being effective with an average percentage of 74.68% based on a questionnaire on students' interest in learning mathematics. Based on the results obtained, it can be concluded that the developed mobile learning media for students' interest in learning mathematics is feasible to use.

This research aims to produce intuitive, interesting, and efficient mathematics learning media. This research is a development research that uses research and development (r&d) with the addie model that covers a sequence of stages ranging from analysis, design, development, implementation, and evaluation. This study was conducted on students of x grade smk netherlands 37 south jakarta. The research subjects that used are students of class xi with bintaro learning media. The number of students in the class is 28 students. The data collection techniques that used are validation and questionnaire filling. The result of this study shows that the use of bintaro props can be used as an alternative to help students to understand mathematics lesson on trigonometric material.

Mathematics is a field of study that has an important role in education. Geometry is one of the mathematics materials taught in primary and secondary schools. However, students in PGMI 3 class still experience many misconceptions in understanding plane material by applying polya theory. The aim of this research is to identify and analyze common misconceptions related to plane material by applying polya theory. This research uses a qualitative method with a descriptive approach. The subjects of this research were 18 out of 39 PGMI 3 UIN North Sumatra students. The results of the research show that there are several misconceptions that occur which involve basic understanding of plane material, steps in solving problems with plane material, misunderstandings about what polya theory is like and making mistakes by not putting symbols in solving problems. This research aims to provide important insights into curriculum development and a more effective teaching approach in working on plane material by applying polya theory. With a more effective understanding of the misconceptions that arise in plane shape material by applying polya theory, appropriate action can be taken to overcome this problem and can help PGMI 3 students at UIN North Sumatra to develop an understanding of plane shape material by applying polya theory better.