Players seated at desks. When teacher commands "Change right," all
move one place to right and the right hand row stands. In like manner
the command may be "Change front," "Change back," or "Change left." At
first it is best to follow each change by the reverse, so as to allow
those standing to get seats, but later they may be told that they
must run to the vacant seats on the opposite side or end of the room.
Leaders may be chosen to act in place of the teacher.
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