At the time of the Covid-19 pandemic, all learning was carried out online or online learning, while schools and students had to follow the existing curriculum in their schools, which of course not all of their lessons were happy. Mathematics is one of the subjects that is always a scourge for students, regardless of those who enjoy mathematics. The reasons vary, some say the lessons are difficult to understand, students are not interested in learning mathematics, the teachers are boring, and so on. So that many parents of students who provide additional tutoring for their children by hiring math teachers, in the hope that their children are mathematically intelligent. This study aims to examine the effect of using animated interactive multimedia on students' understanding of the concept of understanding mathematical concepts. The population of this study were students of class VII MTs Darul Ulum Muhammadiyah Galur even semester of the 2019/2020 school year. Of the five existing classes, two classes were taken randomly as samples with one class as the experimental class and one class as the control class. This study used the randomized pretest-posttest control group design. The research data were obtained through a test in the form of a description of the rectangular and square material. The results showed that there was a difference in the understanding of mathematical concepts in students who used animated interactive multimedia higher than the understanding of mathematical concepts of students who took conventional learning, and there was a positive and significant effect of the use of animated interactive media on the Mathematical Concept Understanding of Class VII MTs Darul Ulum Muhammadiyah Galur Tahun Students 2019/2020 Teaching

The purpose of this study was to determine the appropriate application of the cooperative script method in order to increase the learning interest of the fifth grade students of SD Negeri Prembulan. The results of this study indicate that: (1) In general, the application of the appropriate cooperative script method is effective in increasing interest in learning mathematics, (2) Increasing interest in learning mathematics for fifth grade students of SD Prembulan in pre-cycle by 62.07 in cycle I of 76, 31 in cycle II amounted to 85.39.

The purpose of this study was to determine the application of an integrated scientific approach to the correct problem solving model in order to improve the reasoning abilities of the fifth grade students of SD Negeri Prembulan. The results of this study indicate that: (1) In general, the application of the integrated scientific approach to the correct problem solving model is effective in improving mathematical reasoning skills, (2) Increasing mathematics reasoning of the fifth grade students of SD Prembulan in the pre-cycle by 50.05% in the cycle I amounted to 76.31% in the second cycle of 85.39%

Education and culture cannot be separated in daily life. Ethnomathematics exists to bridge the gap between culture and education, especially in mathematics. Humans are unaware of activities that use basic mathematical concepts and ideas like counting, measuring (length, area, volume, and weight), number construction, games, and buying-selling activities. This study examines and analyzes the Minangkabau traditional games in the scope of geometry. This research is exploratory research with an ethnographic approach. The subjects of this study were 6 players of the Sipak Rago game. The data was collected through observation, documentation, and interview to find mathematical concepts in the Sipak Rago game. Based on the research, there are mathematical concepts in the Sipak Rago game like the concept of circle elements, circle circumference formula, circle area formula, and angle on a circle.

The subject of this study is the fourth grade students of SD Negeri Prembulan, with 28 students. Data collected by observation, questionnaires, tests, and documentation. The results showed that interests and mathematics achievement increased. The percentage interest Based on the results of questionnaires interest in mathematics learning his average percentage is 84% which is very high and is categorized based observers made from cycle to cycle increased. In the pre-cycle average value was 67.71 class of 15 students who achieve KKM, KKM attainment percentage is 53.57%. In the first cycle average rose 9.56 points and the average value of 77.27 in the first cycle classes with 18 students who achieve KKM, KKM attainment percentage of 64%. In the second cycle average rose 9.63 points is equal to 86.90. In the second cycle by 23 students reached the KKM, percentage achievement of 82% KKM. By the results of studies conducted, researchers advise teachers can implement strategies expository as a variation model of learning.