The problem of this study is the low of the third grade student learning outcomes at Gunung Mekar Elementary School in Mathematics. The results of preliminary observations showed that 58.82% of students have not reached the passing grade and the learning has not been implemented optimally. The aim of this study is for increasing the outcomes of student's mathematics learning by using Quantum Teaching Model. The kind of this study is a classroom action research, with the data collection's form is the test sheet. The analysis technique used in this study is a quantitative analysis technique. The results of this study shows that the implementation of Quantum Teaching Model could increase the student's learning outcomes. The percentage of student's mastery learning outcomes increased from the first cycle to the second cycle with the percentage of the first cycle is 64.70% (category quite well) and increased to 82.35% (the excellent category) in the second cycle.