人教版数学二年级上册(观察物体）复习.ppt

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1、一、观察物体Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.从不同的位置观察物体，结果是不同的。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.摄影展览Evaluationonly.Created

2、withAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.小猴子照出来的是：小兔子照出来的是：从上面从侧面Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.下面的图形分别是在哪个位置看到的?连一连。从前面或后面看从上向下看从下面看Evaluationo

3、nly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.下面个图分别是在车的哪个方位看到的？前面侧面后面Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.笑笑淘气Evaluationonly.CreatedwithAspose.

4、Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.下面这些图分别是谁看到的？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.

5、Copyright2004-2011AsposePtyLtd.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.二、轴对称图形Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.如果一个图形能够沿某条直

6、线对折，对折的两部分是完全重合的，那么就称这样的图形为轴对称图形，这条直线叫这个图形的对称轴。轴对称图形Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.下面哪些英文字母是轴对称图形。ACTMNSXZEvaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyri

7、ght2004-2011AsposePtyLtd.国旗是一个国家的象征。你能在下面一些国家的国旗中，找出哪些是轴对称图形吗？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.下面哪些图形是轴对称图形。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyri

8、ght2004-2011AsposePtyLtd.猜一猜：下面的字只出现一半，猜出它是什么字？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.ABCDEFGH下面的字母哪些是轴对称图形？Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2