This article addresses the struggles teachers face when they attempt to change their teaching style in order to achieve an ideal mathematics classroom. With the implementation of the Common Core State Standards, many of the behaviors associated with an ideal mathematics classroom appear within the Standards for Mathematical Practice, on which…

This article presents four-column lesson planning, an adaptation of lesson study, for preservice secondary school teachers. Four-column plans, an integral part of Japanese lesson study, have been less emphasized in the United States. This article presents study results indicating how these teachers were affected by this lesson study adaptation:…