人教版小学二年级数学上册-认识时间-名师公开课教学PPT课件(1)(2).ppt

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,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,第七单元 认识时间,说一说,钟面上都有什么？,1,2,3,4,5,7,6,8,11,12,10,9,钟面上有：,时针，分针，,12,个数字，,12,个大格。,说出钟面上现在的时刻,10:00,10,时,3:30,3,时,30,分,上课。,1,2,3,4,5,每一大格中有几个小格？,1,2,3,4,5,7,6,8,11,12,10,9,5,10,25,30,20,15,60,35,40,45,50,55,钟面上有,个小格,60,1,2,3,4,5,6,7,8,9,10,11,12,分针走一小格是,1,分，,5,分,10,分,20,分,45,分,55,分,60,分,15,分,25,分,30,分,35,分,40,分,50,分,走一大格是,5,分,1,2,3,4,5,7,6,8,11,12,10,9,分针从,12,走到,2,走了几个大格,?,几个小格？,走了几分？,1,2,3,4,5,7,6,8,11,12,10,9,分针从,12,走到,4,走了几个大格,?,几个小格？,走了几分？,1,2,3,4,5,7,6,8,11,12,10,9,分针从,12,走到,6,走了几个大格？,几个小格？,走了几分？,1,2,3,4,5,7,6,8,11,12,10,9,分针从,12,走到,11,走了几个大格？,几个小格？,走了几分？,1,2,3,4,5,7,6,8,11,12,10,9,分针从,12,走到,12,走了几个大格？,几个小格？,走了几分？,1,2,3,4,5,6,7,8,9,10,11,12,分针走,1,圈是,60,分，,时针走一大格是,1,时,1,2,3,4,5,6,7,8,9,10,11,12,1,时,=60,分,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,例,2,2,4,:0,0,4时,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时,5,分,4,:05,2,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时30分或4时半,4,:,30,2,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,4时4,5,分,4,:,4,5,2,11,12,10,1,3,4,5,6,9,8,7,2,从四时开始数。,5,时,5:,00,2,1时25分,8时5分,6时50分,认一认，写一写,1:25,8:05,6:50,拨一拨，说一说,9,时,5,分,11,时,35,分,一寸光阴一寸金，,寸金难买寸光阴。,通过这节课的学习，,你有哪些收获呢？,