四年级数学下册6.2《栽蒜苗(一)》教案北师大版.doc

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1栽蒜苗一学习目标1、经历处理数据的过程,了解单式折线图的特点。2、能根据一组相关的数据,绘制折线统计图。3、能从折线统计图上,获取数据变化情况的信息,并进行简单的预测。学习重难点 能从折线统计图上,获取数据变化情况的信息,并进行简单的预测。学 案 点 案1.在小组长的带领下完成 第 小组蒜苗第 15 天生长情况统计表 学 号蒜苗高(厘米)2、在小组长的带领下一起了解下面的统计图。3、想一想:在条形统计图上,如果 1 格表示 1 厘米,够画吗? 。图中用 1 格表示( )个单位比较合适。4、根据统计图回答:( )的蒜苗长得最高,( )的蒜苗长得最矮。5、从条形统计图中你发现了什么?我发现条形统计图的优点是 。2三、巩固与练习1.在老师的带领下完成 各小组蒜苗第 15 天生长情况统计表 小组 1 2 3 4 5 6 7 8 9蒜苗高(厘米)

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