The following article has the following objectives: (1) to understand the meaning of role playing (2) the purpose of implementing role playing (3) the function and provisions in implementing the role playing model for elementary school students (4) the advantages and disadvantages of using role playing. In implementing role playing, there are quite good benefits for training and increasing creativity and understanding students' learning and mathematical concepts, especially at the elementary level. At that age, a strong understanding is needed because they are not yet able to think abstractly. Therefore, a method is needed that emphasizes the concept so that it is easier for students to learn mathematics. It is also necessary to make more efforts to emphasize understanding the concept so that students have a good enough basis for thinking to achieve other cognitive abilities.

This study aims to examine the effectiveness of the Problem Solving learning model in improving the mathematical critical thinking ability of elementary school students. Through the Systematic Literature Review approach, this study analyzes a number of relevant studies. The results of the study show that the Problem Solving model has significant potential in improving students' critical thinking skills. This model encourages students to be actively involved in the problem-solving process, relate mathematical concepts to real life, and stimulate creativity. However, the implementation of this model requires careful planning, support from various parties, and teacher competency development. Further research is suggested to delve deeper into the factors that affect the successful implementation of the Problem Solving model, as well as develop more specific instruments to measure students' critical thinking skills.