I have been so grateful in my career that I have managed to find my own stepping stones to 'cover' the National Curriculum. I like every lesson to be an adventure. Keep the adrenaline flowing on both sides of the table.
I just came across this on the New York Times website. I like it.

Teachers have nightmares of losing control and collapsing in exhaustion if they truly let children's inventiveness shape their curriculums. Principals and parents have visions of monkeys taking over the zoo. Perhaps the rare teachers who do manage to make every day at school an unpredictable yet purposeful adventure in mutual education deserve to boast about it.