目的 :发展学生的平衡能力 ,提高学生身体的协调性 ,培养学生集体主义荣誉感。课前画一圆形场地 ,圆心上插一面红旗 ,圆的半径为７米 ,游戏前将学生分成四组 ,成一路纵队对角站在圆周上（如图示）。游戏方法 :每个学生用三块木块（也可用其它物代替）作为“渡河”工具 ,教师发 Purpose: To develop students’ balance ability, improve students’ body coordination, and cultivate students’ sense of collectivism. Draw a round field before class and insert a red flag on the center of the circle. The radius of the circle is 7 meters. Before the game, the students will be divided into four groups. The first column will be on the circumference (as shown). Game method: Each student uses three pieces of wood (although other things can be used instead) as a “crossing river” tool.