To support the growth of both people and society as a whole, education is a deliberate process that requires effort and execution. The effectiveness of education can be seen in how learning is implemented in classrooms and how well it is taught. Implementing learning can be problematic, mainly when teaching mathematics in the early grades at the Basic Education Level (elementary and middle school). The issue with mathematics learning at MI Miftahul Ulum class 1 is that there are a lot of barriers, which results in shallow student involvement and learning outcomes. This project aims to enhance mathematics learning results using the Teams Games Tournament approach. This kind of research is called action research in the classroom, and it involves preparation, execution, observation, and reflection phases. Researchers have found that the Team Games Tournament (TGT) model of mathematics learning can enhance the effectiveness of teachers' instruction from cycle I, cycle II, to cycle III, yielding results of 80%, 84%, and 90%. Data on student activities from Cycle I, cycle II, and Cycle III showed increases of 82%, 88%, and 94%, with the assessment criteria being active and very active students. Additionally, there was a significant increase in student learning outcomes from cycle I to cycle III, specifically 70.61, 74.53, and 79.03, while the percentage of classical learning completion was 61%, 72%, and in the third cycle, 83%.