一年级数学上册第1单元准备课《比多少》木块比大小拓展资料新人教版.docx

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1木块比大小有五个木块,颜色分别是红的、白的、黑的、绿的和紫的,大小各不相同。已知其中绿木块比红木块小,黑木块比紫木块大但比绿木块小,紫木块比白木块大,红木块比白木块大。请按照从小到大的顺序,把这几块木块排成一行。本题中的条件比较多,可以先把每个条件涉及的木块一律按从小到大顺序,各自排成一行,然后汇总。从条件得到:绿红,紫黑绿,白紫,白红。综合以上各个条件,得到:白紫黑绿红。所以,五个木块从小到大,顺次是:白木块,紫木块,黑木块,绿木块,红木块。解答本题的关键,先将杂乱的条件根据需要按统一标准整理。条理清晰了,问题也就迎刃而解了。数学需要条理性,所以数学也特别能锻炼人的条理性。

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