I really like this cute little craft to help manage the nameless papers that need claiming. In order to decrease the collection, I have found the following tip to be helpful with whole class assignments.
Soon after they get settled with the paper I say, "point to you name and clap twice." This signals to the others to add the name if it was forgotten. It also tends to redirect the class as a whole. If there was chit chat buzzing in the room from the transition to the activity, the clapping seems to get them all right on task.
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