Each envelope has a different evaluation of learning tool in it eg call my bluff, tweet for help, text what you have learnt, gimme 5 (new words etc) for kids to lift out and stick into books as they choose to reflect on learning. The silver board is called el espejo de reflejo (the mirror of reflection) of what to stop doing, do more of and do less of, either for me or talking about themselves. You can get the resources for the small envelopes here http://ukedchat.com/wsr00010