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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,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,认识时间,认识时间,一、创设情境,引出时间问题,问题:钟表上现在是什么时间?,钟面上,一共有(,)大格,1,大格有(,)小格,一共有(,)小格,1,2,3,4,5,7,6,8,11,12,10,9,钟面上,一共有(,)大格,1,大格有(,)小格,一共有(,)小格,1,2,3,4,5,7,6,8,11,12,10,9,12,1,2,3,4,5,7,6,8,11,12,10,9,(,),(,),5,10,15,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,钟面上,一共有(,)大格,1,大格有(,)小格,一共有(,)小格,1,2,3,4,5,7,6,8,11,12,10,9,12,60,1,2,3,4,5,7,6,8,11,12,10,9,1,时,=60,分,1,2,3,4,5,7,6,8,11,12,10,9,1,时,=60,分,1,2,3,4,5,7,6,8,11,12,10,9,1,2,3,4,5,7,6,8,11,12,10,9,5,1,2,3,4,5,7,6,8,11,12,10,9,5,10,15,20,25,30,35,40,45,50,55,11,12,10,1,3,4,5,6,9,8,7,5,9,时,5,分,9:05,9,时,15,分,9,:,15,11,时,55,分,11,:,55,1:25,1时25分,8:05,8时5分,6:50,6时50分,认一认,考考你,相信你一定行,!,3,:,10,7,:,15,1,:,20,2,:,40,10,:,45,5,:,25,6,:,50,8,:,55,9,时,30,分,9,:,30,6,时,40,分,6,:,40,8,时,35,分,8,:,35,二、体会刻度与时针、分针的关系,(一)认识钟面,问题,1,:关于钟面你们都知道哪些知识?,问题,2,:你还有其他发现吗?,填一填,钟面上有,个大格,,个小格。,时针走个大格是,分针走个小格是,时针走个大格,分针正好走,走大格是,时。,分,,圈,,分。,是,分。,12,60,1,1,5,1,60,分针走一圈,时针走一个大格。,1,时=,60,分,二、体会刻度与时针、分针的关系,(一)认识钟面,问题,1,:关于钟面你们都知道哪些知识?,问题,2,:你还有其他发现吗?,二、体会刻度与时针、分针的关系,(二)体会刻度与时针、分针的关系,问题,1,:仔细观察,分针走了几个小格?,二、体会刻度与时针、分针的关系,问题,2,:你还能继续数下去吗?,10,20,25,30,35,40,45,50,55,60,(二)体会刻度与时针、分针的关系,问题,1,:仔细观察,分针走了几个小格?,(三)认识,1,时,60,分,二、体会刻度与时针、分针的关系,三、认识几时几分,四、应用拓展,巩固新知,做一做。,问题:你能准确写出每个钟表所表示的时间吗?,7:30,7:40,8:00,10:45,9:55,6:05,1:20,四、应用拓展,巩固新知,五、课堂作业,作业:,第,93,页练习二十三,第,1,题、第,2,题,。,
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