In order to get us through the school holidays in a sane fashion, we instigated a new 'rule'. If you are generally good and nice to each other all day, then you get to play on the PS3 for an hour at 4pm. Mostly it has made them ask us "Is it 4o'clock yet?". We've taught them to read the clock, but the question comes just the same. Plus any time it gets to 20 minutes past the hour - "It's 4o'clock, it's 4o'clock!".
The days when they don't get to play are not fun, but when it works - bribery and the PS3 make that one hour so peaceful!
