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在分数应用题教学中,我常用线段图帮助学生分析题目数量关系,揭示解题思路,探索解题方法。例如:六年制教材第十一册12页的15题:一位旅客从甲城坐火车到乙城。火车行了全程的一半时,旅客睡觉了。他醒来时,发现剩下的路程是他睡觉前火车所行路程的1/2。想一想,剩下的路程是全程的几分之几?根据题意,指导学生从以下几个步骤边作图边
In the teaching of fractional application problems, I often use line segments to help students analyze the relationship between the number of questions, reveal the problem-solving ideas and explore ways to solve problems. For example: six years of teaching material eleventh book 12 pages of 15 questions: a passenger from the city to take a train to B City. Halfway through the train, the traveler slept. When he woke up, he found that the rest of the way was 1/2 of the way he was before he went to bed. Think about it, the rest of the journey is the whole process a few? According to the instruct, to guide students from the following steps while drawing side