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一、教学内容人教版七年级下册163～167页“直方图”.二、教学目标1.理解并掌握组距、组数、频数等统计概念.2.初步掌握作直方图的步骤,能够从统计图中获取相关信息.3.感受直方图在描述数据方面的魅力和现实意义.三、教学重点理解并掌握组距、组数、频数等统计概念,初步掌握作直方图的步骤,能够从统计图中获取相关信息.四、教学难点组距、组数的确定和小长方形的高之比等于频数
First, the teaching content PEP seventh grade volumes 163 ~ 167 pages “Histogram ” Second, the teaching objectives 1 understanding and grasp of group spacing, group number, frequency and other statistical concepts .2 preliminary grasp of the histogram Step, to get the relevant information from the statistical map .3 feel histogram description of the data in the charm and practical significance .Three, teaching focus on understanding and mastering the group spacing, group number, frequency and other statistical concepts, initially mastered as a histogram Step, can get relevant information from the chart .In four, the difficulty of teaching group distance, the number of groups to determine and the ratio of the height of the small rectangle is equal to the frequency