Each day when class starts, hand each student a clothes pin (the plastic ones don't fall a part as
much). If you hear a student speak in english, you can take their pin. The student can also take
each others pins. You have to make the rules quite clear or there may be some problems. Always
acknowlege the people who gather a lot of pins.
Ex. of rules: you can't take a pin of a student who speaks french with english words mixed in.
One english alone doesn't count. Make the rules according to you're own observations. Good