年月日ppt课件.pptx

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,#,我学习，我快乐,年,月,日,地球绕太阳公转的同时也在自转。地球自转一周的时间是,23,小时,56,分,4,秒，大约是,1,日。,月亮绕地球公转一周的时间约是一月。,地球绕太阳公转一周的时间约是一年。,1949,年,10,月,1,日 中华人民共和国成立,6,月,1,日 国际儿童节,3,月,12,日 植树节,一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月,年份,天数,月份,一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月,年份,天数,月份,2004,31,29,31,30,31,30,31,31,30,31,30,31,2005,31,28,31,30,31,30,31,31,30,31,30,31,一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月,年份,天数,月份,2006,31,28,31,30,31,30,31,31,30,31,30,31,2007,31,28,31,30,31,30,31,31,30,31,30,31,一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月,年份,天数,月份,2008,31,29,31,30,31,30,31,31,30,31,30,31,2009,31,2831,30,31,30,31,31,30,31,30,31,一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月,年份,天数,月份,2010,31,28,31,30,31,30,31,31,30,31,30,31,2011,31,28,31,30,31,30,31,31,30,31,30,31,一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月,年份,天数,月份,2010,31,28,31,30,31,30,31,31,30,31,30,31,2011,31,28,31,30,31,30,31,31,30,31,30,31,2004,31,29,31,30,31,30,31,31,30,31,30,31,2005,31,28,31,30,31,30,31,31,30,31,30,31,2006,31,28,31,30,31,30,31,31,30,31,30,31,2007,31,28,31,30,31,30,31,31,30,31,30,31,2008,31,29,31,30,31,30,31,31,30,31,30,31,2009,31,28,31,30,31,30,31,31,30,31,30,31,一,三,七,八,十,十二,五,平年二月二十八。,一三五七八十腊，,三十一天永不差；,四六九冬三十天；,歌 诀,一,二,三,四,五,六,七,八,九,十,十二,十一,试一试,一,二,三,四,五,六,七,八,九,十,十二,十一,平年二月二十八。,一三五七八十腊，,三十一天永不差；,四六九冬三十天；,歌 诀,二月,日,一,二,三,四,五,六,2018,年,一月,日,一,二,三,四,五,六,三月,日,一,二,三,四,五,六,四月,日,一,二,三,四,五,六,六月,日,一,二,三,四,五,六,五月,日,一,二,三,四,五,六,七月,日,一,二,三,四,五,六,八月,日,一,二,三,四,五,六,十月,日,一,二,三,四,五,六,九月,日,一,二,三,四,五,六,十一月,日,一,二,三,四,五,六,十二月,日,一,二,三,四,五,六,31,31,31,31,31,31,31,30,30,30,30,？,2004,年,29,2005,年,28,2006,年,28,2007,年,28,2008,年,29,2009,年,28,2010,年,28,2011,年,28,闰年,平年,平年,平年,平年,平年,平年,闰年,2000,4=500,2001,4=500,1,2002,4=500,2,2003,4=500,3,2005,4=501,1,2006,4=501,2,2007,4=501,3,2009,4=502,1,2010,4=502,2,2011,4=502,3,2004,4=501,2008,4=502,2012,年,2013,年,2014,年,2015,年,平年,平年,平年,闰年,二月,2004,年,2008,年,2012,年,公历年份是,4,的倍数的，一,般都是闰年。,二月,日,一,二,三,四,五,六,2018,年,一月,日,一,二,三,四,五,六,三月,日,一,二,三,四,五,六,四月,日,一,二,三,四,五,六,六月,日,一,二,三,四,五,六,五月,日,一,二,三,四,五,六,七月,日,一,二,三,四,五,六,八月,日,一,二,三,四,五,六,十月,日,一,二,三,四,五,六,九月,日,一,二,三,四,五,六,十一月,日,一,二,三,四,五,六,十二月,日,一,二,三,四,五,六,31,31,31,31,31,31,31,30,30,30,30,？,28,（,20184=504,2,）,一年实际是,365,天,5,小时,48,分,46,秒,365,天,每,4,年,平年,366,天,闰年,相差一天,连一连：,1998,2000,2002,2004,1900,（,19984=499,2,）,19004=475,二月,日,一,二,三,四,五,六,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,1900,年,公历年份是,4,的倍数的，一,般都是闰年。,但公历年份是整百数的，必须是,400,的倍数才是闰年。,连一连：,1998,2000,2002,2004,1900,1900400=4,300,数学日记,今天我来到了姑妈家找妹妹玩。姑妈去外地开会了，,11,月,31,日才能回来。,妹妹名字叫月月，是,2004,年,2,月,29,日出生的，她很可爱，我也很喜欢和她玩，今年,7,、,8,月份我俩整整在一起住了,62,天呢！,今天是,10,月,30,日，明天就是,11,月,1,日了，是我的生日呢！我可以和妹妹好好庆祝一下了！,这节课你学到了,哪些知识？,