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片段描述:在教学人教版五年级上册第60页解简易方程内容的例题3时,例题采用播音员播报新闻的形式给出已知条件——今天上午8时洪泽湖蒋坝水位达14.14m,超过警戒水位0.64m。提出问题:警戒水位是多少米?学生看完教材提供的两种解法后,都认为第一种解法简便,而不喜欢用“复杂”的方程来解决问题,这与教材安排的解方程教学意图截然相反。于是师生有了下面的对话。师:这个问题可用什么方法来解?生1:14.14-0.64=13.5(m)。(师板书)生2:设警戒水位为未知数再列方程解出来。
Clip Description: In the teaching of PEP fifth grade on the first page of 60 simple equation content of the sample 3, the sample broadcast announcements using news announcements given the known conditions - at 8 o’clock this morning Jiangze dam water level reached 14.14 m, more than the warning water level 0.64m. Ask questions: how many meters warning level? After reading the textbooks provide two solutions, both considered the first solution is simple, but do not like to use “complex ” equation to solve the problem, which is consistent with the textbook solution equation The opposite of teaching intention. So teachers and students have the following dialogue. Teacher: What is the solution to this question? Student 1: 14.14-0.64 = 13.5 (m). (Teacher’s Book) Health 2: Let the warning level is unknown and then out of the equation solution.