新版苏教版一级上册《9加几》 .ppt
九加几,执教:陈敏凤,3,5,6,1,大家来挑战,4,1,7,1,8,1,5,1,5,3,6,7,4,9+4=,1,3,10,13,9+7=,1,6,10,16,9+6=,1,5,10,15,3,12,9,8,17,先圈出10根,再计算。,9+1+1=,9+2=,算一算,9+1+8=,9+9=,10,10,13,13,18,18,9+,蚂蚁搬家,9+,蚂蚁搬家,95=14,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,小结:,凑十法:九加几,不用怕;借一个,凑成十;计算起来对又快!,