I need some ideas on how to control the noise level in the lunchroom while the PK-2nd grade are eating. Currently we have someone on duty but she is having a hard time convincing the little ones to talk quietly while they eat so she blows a whistle. It works temporarily but then the noise level increases. We hate to tell them to not talk at all. We need some fresh ideas. We are trying to postpone telling the teachers that they have to sit with their class. Does anyone have any suggestions that could help us?