Source: http://ictmagic.wikispaces.com/Classroom+Management+&+Rewards
This is a great free resource from ICT Magic.
Set up on your Whiteboard - if the class is quiet the balls don't bounce !
SERC / Newbridge School
Barley Lane Campus, 258 Barley Lane
Goodmayes
Ilford, IG3 8XS
SERC is a service and information centre brought to you by Redbridge.