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Education in elementary schools has the aim of helping students understand problems in everyday life. The national education system states that education aims to develop the potential of students to become human beings who have faith, noble character, health, knowledge and responsibility. In the context of mathematics education, the PMRI (Indonesian Realistic Mathematics Education) approach is used to help students understand mathematical concepts through real experiences and the context of everyday life. The data grouping learning trajectory using the PMRI approach aims to help grade 1 elementary school students understand the concept of data grouping. The use of sorting and choosing props can also improve the learning outcomes of low grade students in sorting and selecting certain objects or concepts. The aim of this research is that it is hoped that students can learn more effectively through direct experience, visualization and physical movements involved in the sorting and choosing process. Data was collected through interviews and tests. Based on the results and discussion of the research that has been conducted, it can be concluded that the design of a data grouping learning trajectory for elementary school students using an Indonesian realistic mathematics education approach is theoretically able to provide a deeper understanding of data grouping for grade I elementary school students. With the principles in PMRI, students are given the opportunity to develop a conceptual understanding of data grouping with the help of the images provided.

The problem that occurs in this study is the low learning outcomes caused by a lack of teachers in using models and media in learning. Alternatives to solving these problems are using the Problem Based Learning model, Indonesian Realistic Mathematics Education, and Number Head Together. The research objective is to describe the activities of educators, students, and to analyze learning outcomes. The approach used in this discovery is a qualitative approach with the type of PTK, which is carried out in 2 cycles consisting of three meetings. The subjects of this study were 18 grade VI students at SDN Kelayan Selatan 10. Qualitative data obtained through observing the activities of educators and students. While quantitative data through measurement techniques with individual written tests. Data analysis in this finding uses descriptive analysis techniques and cross-tabulations translated into tables, graphs and interpretations with percentages. The results of these findings show that educator activities get a score of 24 in the "very good" category. experienced an increase from a score of 30 to 36 in the "Very Good" category. Classical student activities reached 100% in the "very active" category. As well as student learning outcomes have achieved 100% completeness classically and individually. Based on these findings it can be concluded that using the PBL, PMRI, and NHT models can increase learning activities and outcomes.

The problems found in this study are the low activity, motivation, and learning outcomes of students in mathematics content. This is because learning is one way, learning is less meaningful, and learning is less interesting. The application of the PETA model to mathematical content is a strategy used to overcome this problem. This study aims to describe the activities of educators, analyze the increase in student activity, motivation and student learning outcomes. This study used classroom action research which was carried out during three meetings. The research subjects were 30 students in class V at SDN Telaga Biru 6 Banjarmasin. The type of data taken is qualitative data obtained from observing the activities of educators, students, and motivational questionnaires. Quantitative data were obtained through group and individual written tests. The indicator of success to be achieved is ≥80% of all students. Based on the results of research that has been carried out using the MAP model, it is able to increase student activity, motivation, and learning outcomes.

The problems that occur in this study are low activity and learning outcomes in Mathematics content, due to the use of limited learning media, learning is less interesting and less fun because learning models and methods are less varied, students are still hesitant in expressing opinions about the material. Efforts are made by implementing learning with a combination of PBL, TGT and Improve models. This study aims to increase the activity and student learning outcomes. This research was centered on fourth grade students at SDN Telaga Biru 6 Banjarmasin, totaling 25 students. The research method used is a qualitative approach with the type of Classroom Action Research (CAR). The data used are qualitative data obtained through observing the activities of teachers and students, while quantitative data is through student learning outcomes from individual written test results. The results showed that the combination of the PBL, TGT and Improve models at the fourth meeting showed that the teacher's activity obtained a score of 92 in the very good category. Student activities get a score of 91 in the very good category. Cognitive, affective and psychomotor completeness learning outcomes reached 88%. Based on the results showed that the combination of Problem Based Learning, Teams Games Tournament and Improve models could increase the activity of teachers, students, and student learning outcomes in Mathematics content.

The purpose of this study was to determine whether there was an effect of the problem-based learning model on mathematics learning outcomes in fifth grade students of UPTD SDN Gili Barat. This research is a quantitative research with the method used is quasi-experimental and the design used is nonequivalent control group design. The sample used was 45 students from fifth grade A and B of UPTD SDN Gili Barat. Sampling using saturated samples. In this study using the experimental class and control class. Data collection used multiple choice test questions, the test instruments used were validity tests, reliability tests, difficulty level tests and discrimination tests. The prerequisite test used is the normality test and homogeneity test while the hypothesis test uses the t-test. Based on the results of data analysis using the t-test with a significance level of 0.05, the results were sig. (2-tailed) of 0.010 means that Ho is rejected and Ha is accepted so that it can be concluded that there is a significant difference between the experimental group and the control group, the treatment given has a significant effect on the problem-based learning model of learning mathematics in fifth grade students of UPTD SDN West Gili.

Systematic Review (SR) atau yang secara umum disebut Systematic Literature Review (SLR) ialah teknik sistematis untuk mengumpulkan, menguji secara kritis, mengintegrasikan dan mengumpulkan hasil bermacam kajian penelitian terhadap pertanyaan penelitian atau topik yang diminati. Penelitian diawali dengan menemukan artikel yang dicari sesuai dengan kata kunci yang digunakan yang nantinya berhubungan dengan topik penelitian yang akan diteliti. Penelitian ini bertujuan untuk melakukan kajian literature review Affiliation: terkait Pengaruh Model Pembelajaran Berbasis Problem Based Learning pada Hasil Belajar Matematika. Metode yang digunakan dalam penelitian ini adalah metode SLR (Systematic Literature Review). Pengumpulan data dilakukan dengan mendokumentasi semua artikel yang memiliki penelitian serupa pada artikel yang telah diterbitkan pada jurnal tertentu. Sumber data berasal dari dokumen jurnal yang telah terindex dan diberikan data elektronik ISSN. Pengumpulan data diperoleh dari Google Scholers. Populasi data dalam penelitian ini adalah jurnal yang berfokus dalam model pembelajaran berdasarkan hasil belajar matematika siswa .Artikel yang digunakan pada penelitian ini sebanyak 5 artikel jurnal nasional yang diperoleh dari database google scholar menggunakan aplikasi Harzing’s Publish or Perish.  Hasil penelitian ini  menggunakan model pembelajaran Problem Based Learning pada mata pelajaran matematika untuk siswa Sekolah Dasar.

This research aims to improve student learning outcomes in class I at SD Cordova Indonesia through the application of the trade a problem learning model assisted by concrete media. The problem in this research is the low mathematics ability of students in class I at SD Cordova Indonesia. The method used in this research is the classroom action research method (PTK). The subjects in this research were all 27 class I students at SD Cordova Indonesia. The indicator of success in implementing the action is that students achieve a minimum of 70% completeness with an average learning outcome score of at least 70 from the total number of students. Based on data processing from research results, the average value of student learning outcomes in the pre-cycle was 54.44, then after the first cycle actions were carried out it increased to 63.70. The first cycle action was then continued to the second cycle action and obtained an average score of 71.85 with student completion reaching 74.10% of the total students who took the learning outcomes test. Based on the results in cycle II, it shows that the application of the trade a problem learning model assisted by concrete media is effective in improving students' mathematics learning outcomes in class I at SD Cordova Indonesia.