2016春三年级数学下册 第六单元《走进天文馆—年、月、日》课件4 青岛版六三制.ppt

第六单元走进天文馆,集体备课,重点：,1、结合现实情境，了解24时计时法，会用24时计时法表示时刻，能进行简单时间计算。2、借助生活经验，认识年、月、日，了解它们之间的关系，初步了解平年、闰年的知识。3、经历观察、猜想、推理等探索过程，能进行简单的、有条理的思考。同时，受到科普教育。4、感受数学与日常生活的密切联系，提高数学素养。,难点:,1、能较为熟练地进行24时计时法与普通计时法的转化。2、掌握年、月、日之间的关系，理解四年一闰的道理。3、掌握大月、小月、平年、闰年的判断方法。,教法：,以练为主，重点指导，合理突破难点，精讲多练。,作业设计：,导学与训练上的题。,教学模式：,先学后教，先做后讲，重点突出。,习题：,练习题以重点、难点、易错点、易混点、易考点为主，全面、有梯度的设计。,24时计时法,回顾反思,自主练习,合作探索,情境导入,一、情境导入,从图中，你知道了哪些数学信息？,开馆时间8:3016:30,9:00宇宙旅行10:30恐龙灭绝与天体碰撞15:00奇妙的星空15:45小丽访问哈勃,开馆时间8:3016：30,9:00宇宙旅行10:30恐龙灭绝与天体碰撞15:00奇妙的星空15:45小丽访问哈勃,根据这些信息，你能提出什么问题？,15:00是几时？,天文馆一天的开馆时间有多长？,二、合作探索,15：00是几时？,在一日中，钟表上的时针正好走2圈，共24小时。,二、合作探索,15：00是几时？,13,14,15,16,20,19,18,17,24,23,22,21,13时就是下午1时。,15时就是下午3时。,这里用的是24时计时法。,生活中你还见过哪些地方用24时计时法来表示时间？,二、合作探索,10：30（）16：00（）20：45（）,试一试,下午6：00（）晚上12：00（）上午8：00（）,用普通计时法表示下面的时刻。,:,:或:,:,上午:,下午:,晚上:,用24时计时法表示下面的时刻。,二、合作探索,天文馆一天的开馆时间有多长？,数,转,算,继续,你会计算吗？试试看！,二、合作探索,:,小时,天文馆一天的开馆时间有多长？,返回,二、合作探索,天文馆一天的开馆时间有多长？,返回,13,14,15,16,20,19,18,17,24,23,22,21,1小时,2小时,3小时,4小时,5小时,6小时,7小时,8小时,二、合作探索,（小时）,天文馆一天的开馆时间有多长？,返回,答：天文馆一天的开馆时间是8小时。,0,三、自主练习,1.用24时计时法表示下面的时刻。,5:00,13:00,18:20,三、自主练习,2.,银行上午几时几分开始营业？下午几时几分停止营业？营业时间有多长？,上午8：30,下午5：30,9小时,三、自主练习,3.,最早是几时几分发车？最晚呢？每天首班车和末班车发车时间间隔多久？,城城流水发车时间:,上午5：30,下午5：30,12小时,三、自主练习,4.,从上午几时几分到晚上几时几分禁止汽车通行？,8:0021:30,从上午8：00到晚上9：30禁止通行。,认识年月日,回顾反思,自主练习,合作探索,情境导入,根据这些信息，你能提出什么问题？,一、情境导入,从图中你知道了哪些数学信息？,关于年、月的知识你知道哪些呢？,一、情境导入,一年有12个月,一年有365天,有时有366天,探索活动要求,1.仔细阅读年历卡，你能从中发现哪些有关年、月的知识？,2.比较这些年历卡有什么相同之处和不同之处？你从中发现了哪些规律？,二、合作探索,借助年历卡研究一下，看看有关年、月的知识还有哪些？,二、合作探索,二、合作探索,2006年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,二、合作探索,2007年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,二、合作探索,2008年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六1234567891011121314151617181920212223242526272829,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,二、合作探索,2009年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,二、合作探索,2009年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,二、合作探索,2010年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,二、合作探索,2011年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,二、合作探索,2012年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六1234567891011121314151617181920212223242526272829,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,二、合作探索,2013年,三月,二月,一月,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六1234567891011121314151617181920212223242526272829,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,十二月,十一月,十月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六12345678910111213141516171819202122232425262728293031,九月,八月,七月,日一二三四五六123456789101112131415161718192021222324252627282930,日一二三四五六12345678910111213141516171819202122232425262728293031,日一二三四五六123456789101112131415161718192021222324252627282930,六月,五月,四月,31,30,二月,1,3,4,5,6,7,2,8,9,10,11,12,拳头记忆法：,二、合作探索,关于年月的知识你知道哪些呢？,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,28,2013,28,1999,29,2012,28,1998,28,2011,28,1997,28,2010,29,1996,28,2009,28,1995,29,2008,28,1994,28,2007,28,1993,28,2006,29,1992,28,2005,28,1991,29,2004,28,1990,28,2003,28,1989,28,2002,29,