The pupils, upon the command of the player who is the leader and
stands in front of the class, fold their arms upon the desk and lower
the head upon the arms. The leader has an eraser or other article
which he places upon one of the desks. He commands "Heads up" and the
pupils raise their heads. The one finding the eraser on his seat rises
and chases the leader. If he catches him he becomes the leader; if
not, the first one is again the leader. If they fail to catch him
after two trials he chooses another leader.
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