When you buy a Juice or a Moosie from the canteen, hold the wrapper (s) until the end of lunch. When you come inside, put this wrapper in the Jucie bin inside your class. At the end of every lunch, a class member from each class will count every single wrapper from the bin inside your classroom. They will keep a record of how many Juicies wrappers are in the bins and at the end of the week put the total number on a spreadsheet. At the end of the week, the class that has the most wrappers will win a prize such as a mufti day or a pizza lunch.