一、算一算《手术台就是阵地》末段,写到齐会战斗进行了三天三夜,白求恩大夫在手术台旁连续工作了69个小时。教学时可设计如下练习题:(24×3)-69=?通过计算,可知道白求恩大夫为了战斗的胜利,为了抢救伤病员,他紧张工作了69个小时,休息的时间仅仅3个小时。可见白求恩品质之高尚,精神之伟大。其它用数字表达中心的文段,也可仿用此 First, count the “operating table is the position of” the final paragraph, wrote Qi fight for three days and nights, Dr. Bethune in the operating table continuous work for 69 hours. Teaching can be designed to practice the following questions: (24 × 3) -69 =? By calculation, we can know that Dr. Bethune in order to fight the victory, in order to rescue the sick, he worked intense hours of 69 hours, rest time of only 3 hours . Bethune shows the noble quality of the spirit of the great. Other sections with numerical expression centers can also be used for this purpose