人教版小学数学课件《认识半时》.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,*,认识半时,分针,时针,12,个数字,12,3,时,3:00,12,11,10,8,时,8:00,12,11,10,9,时,9:00,分针指着,12,，时针指着 几 就是 几 时。,8,8,3,3,10,10,几,几,12,1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4,5,6,7,8,9,10,11,3,时半,3:30,9:30,9,时半,9,时,30,分,8:30,8,时半,分针指着,6,，时针指着 就是,。,6,和,7,的中间,6,时半,7,和,8,的中间,7,时半,4,和,5,的中间,4,时半,几,和几的中间,几,时半,12,1,2,3,4,5,6,7,8,9,10,11,5,时半,5:30,12,1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4,5,6,7,8,9,10,11,8,时半,8,：,30,6,时半,6,：,30,3,时半,3,：,30,你能按分针的位置将这几个钟表分成两类吗？,1,3,4,2,5,6,7,8,你能按分针的位置将这几个钟表分成两类吗？,1,3,3,2,5,6,7,8,整时,半时,小结：,分针指着（）就是整时。,分针指着（）就是半时，,这时时针指着（）个数的中间。,12,6,两,12,7,8,9,10,11,1,2,3,4,5,6,12,7,8,9,10,11,1,2,3,4,5,6,12,7,8,9,10,11,1,2,3,4,5,6,12,7,8,9,10,11,1,2,3,4,5,6,12,7,8,9,10,11,1,2,3,4,5,6,1,时,9,时半,3,时,11,时半,5,时半,愉快的周末（连线）,9,：,30,11,：,30,12,：,00,8,：,00,