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在教学北师版小学二年级下册第八单元第二节“运白菜”时有一道关于里程计算的题目。题目:小军的爸爸是一位出租车司机,星期一出车时,里程表的读数是35千米。每天收车时,小军都记录了当时的里程表读数,共记录了五天。(单位:千米)五天共行驶了多少千米?在教学这道题目时发现学生对此题的解决存在一些困难,部分学生会出现把里程表的读数进行相加这一错误做法。教材中提供了两种解决方法,但这两种方法只是一带而过没有做详细的讲解,学生接受起
In the teaching of the second edition of the second edition of primary school eighth eighth eighth unit “cabbage ” when there is a topic on mileage calculation. Title: Xiao Jun’s father is a taxi driver, and his odometer reading is 35 kilometers on Monday. Close the car each day, the small army records the odometer readings were recorded for a total of five days. (Unit: km) How many kilometers traveled in a total of five days? When teaching this subject, we found that students had some difficulties in solving this problem. Some students appeared to mistake the odometer readings. The textbook provides two solutions, but the two methods are only a part of the area without a detailed explanation, students accept