The goal of this study was to examine the impact of the integration of global experiences on in-service teachers' international perspectives in mathematics classroom teaching through offering a graduate course "Global Perspectives in Mathematics Teaching" in the form of the East Meets West Program. This program engages teachers in an interactive faceto-face learning process in a dual language immersion setting. The opportunity of learning effective teaching strategies from Chinese top-ranked mathematics teachers and applying these strategies in teaching mathematics by working with a group of Chinese and US children in the East Meets West Program has benefited classroom teachers in various ways. The results of the study show that observing Chinese teachers' mathematics lessons, doing the case study on student learning, and observing and discussing the US colleagues' mathematics lessons highly have benefited them as classroom teachers.