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有两位老师教数学第六册第73页上这样一道应用题:两只轮船同时从上海和武汉相对开出。从武汉开出的船每小时行26公里,从上海开出的船每小时行17公里,25小时以后两船相遇。上海到武汉的航路长多少公里?都设计了同样两道准备题:(1)一只轮船从武汉开往上海,每小时行26公里,25小时以后行了多少公里?(2)一只轮船从上海开往武汉,每小时行17公里,25小时以后行了多少公里?准备题的设计,看来还是合适的。两位老师在进入新课时,却采取了不同的处理方法。
Two teachers teach math sixth book on page 73 such an application problem: two ships at the same time from Shanghai and Wuhan relative out. The ship departing from Wuhan runs 26 kilometers per hour and the ship departing from Shanghai runs 17 kilometers per hour. After 25 hours, the two ships meet. Shanghai to Wuhan route how many kilometers? Have designed the same two preparations: (1) a ship from Wuhan to Shanghai, 26 kilometers per hour line, after 25 hours how many kilometers? (2) a ship From Shanghai to Wuhan, 17 kilometers per hour, how many kilometers after 25 hours? Preparation of the design, it seems appropriate. When the two teachers entered the new course, they took a different approach.