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Unrestricted choice , then , may well lead to selection effects with a class bias ( Moe 1995b ) . Then , with each student completing his own page on the master , make just one copy for a class book . As the students finish filling out their Clue Sheets , each picks up the sheet and a book and joins me on the rug for a class meeting . Teaching artist Amy Perry and students in a class workshop on Arthur Miller 's The Crucible as part of the Denver Center for the Performing Art 's Living History educational program .