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一、收集反馈,体会小数1.找一找,说一说。谈话:课前老师让大家收集生活中的小数,谁愿意跟大家说一说你所收集的小数?2.听一听,记一记。师:老师能把他们介绍的小数写下来吗?仔细观察老师的书写是否正确。3.想一想,分一分。师:你能将这些小数分分类吗?并说说你分类的理由。小结:根据小数点右边一共有几位数来分类。【设计意图:有效的教学建立在学生的已有知识和经验基础之上。课始的交流,唤醒学生
First, collect feedback, experience decimal 1. Find a find, talk about. Conversation: Before the class teacher let everybody collect the decimal in the life, who is willing to tell everybody with the decimal that you collected? 2. Listen, remember. Teacher: Can the teacher write down the decimal they introduce? Watch carefully whether the teacher’s writing is correct or not. Think of it, give it a share. Teacher: Can you classify these decimals? And talk about the reasons for your classification. Summary: According to the right of the decimal point a total of a few digits to classify. Design Intention: Effective teaching builds on students’ existing knowledge and experience. The beginning of the exchange, wake students