This study aims to examine how cross cultural analysis can lead to deeper understanding of the cultural script of teaching, and how teachers learn to transform their teaching script through a research-based transnational learning platform. In this study, emphasis is placed on a cross cultural analysis to view in depth the cultural script of teaching mathematics in Korea through the eyes of Japanese teachers and critical lenses of researchers' feedback. The objective herein is to focus on the challenges whereby Korean teachers have to redesign teaching as they look at students as problem solvers. This cross cultural analysis attempts to determine the cultural script of teaching mathematics in Korea and improve the quality of teaching from the following two perspectives: (1) teacher teaching; and (2) student learning.