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【教学内容】义务教育课程标准实验教科书(苏教版)四年级下册第98页。【教材简析】在确定物体具体位置时,根据学生已有的知识和经验,可以用一个“第几”来描述,比如,从左往右数第3个是小明(一年级上册教材);也可以用两个“第几”来描述,比如,坐在第4排第3个的是小强(二年级上册教材)。这些描述体现了自然数有表示次序的作用。本课在此基础上,让学生用数对表示具体情境中物体的位置,进一步提升了学生的已有经验,培养了学生的空间观念,同
【Content】 compulsory education curriculum standard experimental textbook (Su Jianban) fourth grade volume of the first 98 pages. [Textbook analysis] In determining the specific location of objects, according to the students’ existing knowledge and experience, you can use a “number ” to describe, for example, from left to right the third is Xiao Ming (Grade One textbook ); You can also use two “number ” to describe, for example, sitting in the third row of row 4 is a small strong (grade two textbook). These descriptions show the natural order of numbers. On the basis of this lesson, students are asked to indicate the location of objects in specific situations by using pairs of pairs to further enhance the students ’existing experience and cultivate students’ space concepts.