,九加几,苏教版一年级上册,执教：秦瑶,10+1,10+3,10+5,10+7,9+1+2,9+1+4,9+1+6,9+1+8,9,4,+,=,94= （个）,1,3,10,13,凑十法,98=,1,7,10,17,想:9加( )凑成10,8可以分成( )和 ( ),10加7等于( ),1,1,7,17,试一试,1,6,16,9+6=,9+6=,1,5,10,15,1,4,10,14,想想做做,3,12,9,8,17,凑十法,先圈出10根，再计算。,9+1+1=,9+2=,9+9=,9+1+8=,11,18,18,11,3.算一算，比一比。,江苏省电化教育馆制作,9+1+1=,9+2=,9+1+8=,9+9=,11,11,18,18,9+,蚂蚁搬家,9+,蚂蚁搬家,9+5=14,9+,蚂蚁搬家,9+2=,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,9 + 1 = 10 9 + 2 = 11 9 + 3 = 12 9 + 4 = 13 9 + 5 = 14 9 + 6 = 15 9 + 7 = 16 9 + 8 = 17 9 + 9 = 18 9 + 10 = 19,仔细观察你发现了什么？,9 + 1 = 10 9 + 2 = 11 9 + 3 = 12 9 + 4 = 13 9 + 5 = 14 9 + 6 = 15 9 + 7 = 16 9 + 8 = 17 9 + 9 = 18 9 + 10 = 19,仔细观察你发现了什么？,这节课你有什么收获？,再见！,