Stupid Fours

Today we had a lesson called maths. I had never heard of it before, but it's like a kind of boring magic where you turn numbers into other numbers. Instead of a wand you use a pencil, and instead of amazing basilisks and satyrs theres just stupid fours and sevens. Me and Ron didn't even pay attention, we just sat at the back of the room making tiny ghosts appear with the CREATE MICRO GHOST spell we learnt. Micro ghosts are amazing.