This document discusses adapting the Japanese lesson study model of professional development for use in different cultures. It outlines some potential obstacles to translating lesson study between cultures, such as differences in educational systems, teacher views and experience levels. The document emphasizes that lesson study is a collaborative, reflective process focused on student learning. It provides an example of how key elements of lesson study could be incorporated into a university course for pre-service teachers in Germany. Finally, it discusses how the reflective principles of lesson study align with Dewey and Schon's views of reflection as developing and testing hypotheses through action in a collective, iterative process.