初二数学全部教案（精品）

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1、初二数学教案初二数学教案钱诚初二数学知识点第一章一次函数1函数的定义，函数的定义域、值域、表达式，函数的图像2一次函数和正比例函数，包括他们的表达式、增减性、图像3从函数的观点看方程、方程组和不等式第二章数据的描述1了解几种常见的统计图表：条形图、扇形图、折线图、复合条形图、直方图，了解各种图表的特点条形图特点：（1）能够显示出每组中的具体数据；（2）易于比较数据间的差别扇形图的特点：（1）用扇形的面积来表示部分在总体中所占的百分比；（2）易于显示每组数据相对与总数的大小折线图的特点；易于显示数据的变化趋势直方图的特点：（1）能够显示各组频数分布的情况；（

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