一、渡河 （一）场地器材：画两条相距１５米的平行线，中间为河道，线外为河岸。在河道里画大小不同的两组圆圈作为石块（两组圆圈大小、距离位置相反）。 （二）方法法：把学生分成人数相等的两队，各队再分成两路纵队，分别面对面站在两端平行线后。听到信号后，先由各队第 First, crossing the river (A) venue equipment: Draw two parallel lines 15 meters apart, the middle of the river, outside the line for the river. Draw two sets of circles of different sizes in the river as stones (two circles in size and opposite in distance). (B) method of law: the students into equal numbers of two teams, each team is divided into two columns, respectively, after standing face to face at both ends of parallel lines. After hearing the signal, the first by the teams