The final part daily lesson planning happens after the lesson has ended (although Brow, 1994, reminds us that evaluation can take place during the lesson too), when the teacher must evaluate the success (or failure) of the lesson.
Ur (1996) says it is important to think after teaching a lesson and ask “whether it was a good one or not, and why”. This form of reflection is for self-development.
Of course, both “success” and “failure” are relative terms and their definitions will vary according to each individual teacher´s and student´s perspective.