论文部分内容阅读
贵刊1996年第6期刊登了内蒙古通辽市刘春生写的《利用图形巧解“托尔斯泰的割草问题”》一文,读后很受启发。掩卷之余,觉得还可另设单位“1”巧解此题,且学生较易理解。原题:一队割草的人,要把甲乙两片草地的草割掉。甲草地面积是乙草地面积的二倍。上午大家都在甲草地上工作,午后分成人数相等的两组分别在两片草地上割草。到傍晚甲草地恰好割完,乙地还剩一小块。这一小块由一个人去割,需要一天的工夫。问这队割草人有多少人? 方法一:设全队人数全天割草量为单位“1”,根
No. 6, 1996, published in your article entitled “Tolstoy's Mowing Problems Using Graphical Solutions” written by Liu Chunsheng, Tongliao City, Inner Mongolia, was very inspired. Cover off the volume, I feel also set up another unit “1” cleverly solve this problem, and students more easily understood. Original title: A team of mowing people, we should A and B two grass cut off the grass. A grass area is B grass area twice. In the morning everyone was working on a grass field. In the afternoon, two groups of people of equal size were cut in two grasslands. A grass just cut to finish the evening, B left a small piece. This small piece cut by one person, it takes a day's work. Ask how many people mow this team? Method One: Set the number of team members mowing day for the unit “1”, root