1. Provide opportunities for them to perform – this is what they were born to do anyway e.g. history plays, scenes from the book you read, MC at assemblies etc.
2. Give them positive reinforcement in the form of attention – this is what they are asking for. Loudly announce how well they are working quietly and how well they have done their work.
3. Give them a paper and a pen and ask them to write down everything they want to say out loud and you will give them a chance to say it if they put up their hand. This helps them with impulse control because they know they will be given a chance to make everyone laugh. This will take some practice!