1、单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,本资料仅供参考,不能作为科学依据。谢谢。本资料仅供参考,不能作为科学依据。本资料仅供参考,不能作为科学依据。谢谢。本资料仅供参考!,除法-发 现 规 律,西师大版三年级数学下册,1/18,学习目标,1.,经过学习,能让同学们体验事物内部或事物之间是有规律。,2.,让同学们经历探索、发觉规律过程,从而激发他们探索欲望。,2/18,1,3/18,1,填写下表:,篮球总个数,8,16,24,32,40,每筐装个数,8,8,8,8,8,装筐数,4/18,1,填写下表:,篮球总个数,8,16,24,32,40,每筐装
2、个数,8,8,8,8,8,装筐数,1,8,8,1,(筐,),5/18,1,填写下表:,篮球总个数,8,16,24,32,40,每筐装个数,8,8,8,8,8,装筐数,1,2,8,8,1,(筐,),16,8,2,(筐,),6/18,1,填写下表:,篮球总个数,8,16,24,32,40,每筐装个数,8,8,8,8,8,装筐数,1,2,3,8,8,1,(筐,),16,8,2,(筐,),24,8,3,(筐,),7/18,1,填写下表:,篮球总个数,8,16,24,32,40,每筐装个数,8,8,8,8,8,装筐数,1,2,3,4,8,8,1,(筐,),16,8,2,(筐,),24,8,3,(筐,),
3、32,8,4,(筐,),8/18,1,填写下表:,篮球总个数,8,16,24,32,40,每筐装个数,8,8,8,8,8,装筐数,1,2,3,4,5,8,8,1,(筐,),16,8,2,(筐,),24,8,3,(筐,),32,8,4,(筐,),40,8,5,(筐,),9/18,1,填写下表:,篮球总个数,8,16,24,32,40,每筐装个数,8,8,8,8,8,装筐数,1,2,3,4,5,8,8,1,(筐,),16,8,2,(筐,),24,8,3,(筐,),32,8,4,(筐,),40,8,5,(筐,),从表格和算式中,你发觉了什么?,10/18,1,填写下表:,篮球总个数,8,16,24,
4、32,40,每筐装个数,8,8,8,8,8,装筐数,1,2,3,4,5,8,8,1,(筐,),16,8,2,(筐,),24,8,3,(筐,),32,8,4,(筐,),40,8,5,(筐,),从表格和算式中,你发觉了什么?,除数不变,被除数扩大几倍,商就扩大相同倍数。,11/18,2,先找出数排列规律,然后在问号处填上适当数。,12/18,2,先找出数排列规律,然后在问号处填上适当数。,想一想:,123,13/18,2,先找出数排列规律,然后在问号处填上适当数。,想一想:,123,235,14/18,2,先找出数排列规律,然后在问号处填上适当数。,想一想:,123,235,358,15/18,2,先找出数排列规律,然后在问号处填上适当数。,想一想:,123,235,358,5813,16/18,2,先找出数排列规律,然后在问号处填上适当数。,想一想:,123,235,358,5813,说一说上面数排列规律,再填空。,17/18,2,先找出数排列规律,然后在问号处填上适当数。,想一想:,123,235,358,5813,34,说一说上面数排列规律,再填空。,18/18,