一年级数学上册2.4数射线课件沪教版

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,*,0,1,2,3,4,5,6,7,8,9,10,动物王国运动会,sh sh xin,数 射 线,0,0,1,2,3,4,5,6,7,8,9,10,0,数射线有哪些特征？,1.,有原点（,0,）,2.,有单位（每格都一样）,3.,有方向（从,0,往右数，越数越大）,0,1,2,3,4,5,6,7,8,9,10,填相邻的数,0,1,2,0,在,1,的左边,2,在,1,的右边,2,3,4,7,8,9,1,2,3,6,7,8,0,1,2,3,4,5,6,7,8,9,10,比赛开始啦,.,）,小熊：从,0,向右跳，一次跳（）格，,跳了（）次，停在了（）,0,1,2,3,4,5,6,7,8,9,10,小兔：从,0,向右跳，,一次跳（）格，跳了（）次，停在了（）,0,1,2,3,4,5,6,7,8,9,10,小袋鼠：从,0,向右跳，,一次跳（）格，跳了（）次，停在了（）,0,1,2,3,4,5,6,7,8,9,10,从,0,向右跳，跳得越远，跳到的数越大,：,1,2,或,：,1,4,2,4,9,10,7,4,8,3,5,5,