In Chapter 1,we discussed the need for variety in classroom activities and teacher behaviour as an antidote to student(and teacher) boredom. This means that, when teacher plan a lesson, they build in changes of activity and a variety of exercises. It may well be that the lesson has an overall theme, but within that theme the students do different things. This was demonstrated by our classroom sequences in Chapter 4 and Chapters 6-10. What was being sought for in each case was a confidence-inspiring coherence lit up by variety and interest.