1. Exploring EFL Teacher Professional Development Through Lesson Study: An Activity Theoretical Approach Open Access Author: Tasker, Thomas Charles Title: Exploring EFL Teacher Professional Development Through Lesson Study: An Activity Theoretical Approach Graduate Program: Applied Linguistics Keywords: lesson studyEFLprofessional developmentactivity theorydevelopmental work researchteacher cognition File: Download tct_final.pdf Committee Members: Karen E Johnson, Dissertation Advisor/Co-AdvisorKaren E Johnson, Committee Chair/Co-ChairRobert William Schrauf, Committee MemberJames F Nolan Jr., Committee MemberMeredith Christine Doran, Committee MemberSteve L Thorne, Special Member