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相遇问题是行程问题中的一种典型问题,学生在四年级接触了简单行程问题的基础上(单一物体时间、路程、速度三者关系的研究),在五年级的下半学期进行相遇问题的集中学习。为了使教学更加有效教学设计中的新授环节,我进行了如下尝试。教学片断:师:体育课上我们是不是经常进行赛跑?今天我们来进行一次竞走,竞走路程是从教室的南边到北边,如果同桌两人合作走完这段路程,谁能想一种最好的方法,使所用的时间最短?(小组讨论)
Encounter problem is a typical problem of travel problem. Students encounter the problem of simple travel in the fourth grade (the study of the relationship between the time, distance and speed of a single object), the encounter in the second semester of the fifth grade Concentrate on learning. In order to make teaching more effective teaching design of the new grant link, I made the following attempt. Teaching Pieces: Teacher: Are We Running Regularly in Physical Education Class? Today, we come for a walking race. Walking distance is from the south to the north of the classroom. If the two people at the same table finish this journey together, who can think of the most Good way to minimize time spent (panel discussion)