一年级数学上册第1单元准备课《数一数》课件新人教版.ppt

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数一数,导入,数一数,1.我们班有几块黑板?,2.我们班有几把笤帚?,3.我们班有几扇窗户?,情景激趣,问题:在图中你都看到了什么?,数一数,它们有多少个?,数一数,1,数一数,2,数一数,3,数一数,4,数一数,5,数一数,6,数一数,7,数一数,8,数一数,9,数一数,10,学以致用,1.看数圈一圈。,学以致用,2.连一连。,课堂小结,2. 几种图形混在一起,数某种图形的个数时, 可以数一个用铅笔划掉一个。,1.数数时,要按照一定的顺序数,边数边做记号,做到不重复、不遗漏,数到最后一个物体所对应的那个数,就是这种物体的总个数。,

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