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一、板书的作用板书是课堂教学的重要组成部分,是一种必不可少的教学手段。一般来说,小学数学课堂上的板书,有以下几个方面的作用: 1.提供思维素材,进行思维导向。学生通过教师的板书,可以获得思维的依据。例如,在教学“3/7+2/7=5/7”这道同分母分数加法时,教师提问:3/7、2/7和5/7的分数单位各是多少?它们各有几个这样的分数单位?根据学生的回答,在算式的上方作如下板书:3个1/7 2个1/7 5个1/7 学生从板书↓↓↓中可以清楚地看3/7 + 2/7 = 5/7到,同分母分数相加,由于分数单位相同,所以实质上就是分数单位的个数相加。这样就很容易理解同分母分数相加,分母不变、分子相加的道理,顺利地掌握它
First, the role of the blackboard The blackboard is an important part of classroom teaching is an essential teaching tool. In general, the primary school mathematics on the blackboard, has the following aspects: 1 to provide the material for thinking, thinking-oriented. Students through the teacher's blackboard, you can get the basis for thinking. For example, teaching “3/7 + 2/7 = 5/7” when adding the same denominator score, the teacher asks: What are the fractional units of 3/7, 2/7 and 5/7, and how many According to the student's answer, put the following on the top of the formula: 3 1/7 2 1/7 5 1/7 Students can clearly see 3/7 + 2 from the ↓↓↓ / 7 = 5/7 to, with the denominator fraction added, the same as the fractional unit, so in essence it is the number of fractional units added. This makes it easy to understand the truth with the same denominator, denominator, numerator, smooth grasp of it