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【教学内容】人教版五年级下册第132~133页。【教具准备】多媒体课件、磁扣。【教学过程】一、激趣导入师:刚刚老师接到学校的紧急通知,今天放学后要请四学年的511位家长到校召开家长会(板书:511位),我用哪种办法能确保每位家长都收到这个消息呢?生:打电话。师:如果给一位家长打电话需要1分钟,那么给2位家长就需要?3位呢?511位呢?放学前能打完吗?生:打不完。师:看来,我们得研究一个打电话更省时的办法。(板书:省
【Teaching content】 PEP fifth grade volumes of the first 132 ~ 133 pages. [Teaching aids to prepare] multimedia courseware, magnetic deduction. Teaching Process I. Irritated Import Teacher: Just after the teacher received an urgent notice from the school, after today’s school, please ask 511 parents of the four school year to hold a parent meeting (board writing: 511). How can I ensure that Every parent receives this news? 生: Call. Teacher: If it takes 1 minute to call a parent, then 2 parents will need 3? 511? Can we finish before school? Teacher: It seems that we have to study a more time-saving way to make a phone call. (Blackboard: province