Masing-masing sumber ini memiliki tautan ke organisasi lain dan sumber daya tambahan. Â¢Ã‚â€“Ã‚Â  Lesson Study Group di Mills College(http://lessonresearch.net/). Â¢Ã‚â€“Ã‚Â  Lesson Study Research Group at Teachers College, Columbia University (http://www.tc.edu/lessonstudy/).