So, you print them out and laminate them. When you think someone in your lesson has worked really well, their name goes on the 'Like' poster. When their behaviour has started to concern you, you write their name on the orange card and rub their name off the 'Like' one and when they have behaved badly, they go onto the 'Dislike' card. From then, they feed into your school's sanctions system, or you have a quiet word with them at the end of the lesson and get to the bottom of their behaviour. At the end of the lesson, all those who have got 'Likes' can get merits or whatever your school system has to offer. I suggest that those on the orange card are spoken to and reminded how close they were to getting a dislike for their behaviour!