数学苏科版7(上)3.5去括号教学设计

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一、教学目标:1、会用去括号进行简单的运算。2、经历得出去括号法则的过程,了解去括号法则的依据。体会从一般到特殊的归纳过程,培养学生的观察、分析、归纳能力。二、教学重点:经历得出去括号法则的过程,了解去括号法则的依据。三、教学难点:括号前是“一”号时,去括号的法则四、教具、学具:多媒体演示、PPT课件、三角尺.五、教学过程:(一)、前端学习与展评(展评即展示与评价,展示是 First, the teaching objectives: 1, will use brackets for simple calculations. 2, went through the process of going to the brackets, to understand the basis for the law to the brackets. Experience from general to special induction process, develop students’ observation, analysis, inductive ability. Second, the teaching focus: experience go to the process of bracketed laws, understand the basis for the law to bracketed. Third, the teaching difficulties: Brackets before the “A ” number, to the brackets of the rules IV, teaching aids, learning tools: multimedia presentation, PPT courseware, triangular ruler. (Exhibition evaluation is the show, the show is
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