My lesson plan for Ex15 is:
Student - practice 30 degree AoB turns.
Instructor - demo 45 deg AoB turns.
Student - practice 45 deg AoB turns.
Instructor - demo 60 deg AoB turns.
Student - practice 60 deg AoB turns.
Instructor - demo 60 deg AoB turn with insufficient power.
Instructor - demo steep descending turns 45 deg AoB from established glide.
Student - practice steep descending turns 45 deg AoB from establised glide.
Instructor - demo recovery from spiral descent.
Student - practice recovery from spiral descent.
Return home for tea and medals. Or beer and medals if its last detail of the day.