8
10
1 one Counting units
2 ones
3 ones
4 ones
5 ones
6 ones
7 ones
8 ones
9 ones
10 ones is 1 ten.
10 ones is 1 ten. 本资料来自于资源最齐全的21世纪教育网www.21cnjy.com 10 ones. 1 ten is
12 Write: Read:twelve 1ten and 2 ones make12. 制作说明:利用小棒图,通过数、捆、写结合,突出捆,理解12是1个十和2个一组成。 12 Write: Read:twelve
15 Write: Read:fifteen 1ten and 5 ones make15. 制作说明:利用小棒图,通过数、捆、写结合,突出捆,理解12是1个十和2个一组成。 15 Write: Read:fifteen
3 ones 1 ten 13
15 ﹖
17
16 16 ?
18 16 ?
16 ? 2 tens is 20. 20 is 2 tens.
The numbers within 20
Look at the ruler, count from 0 to 20.
Count from 7 to 18.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 I can do: (1)1 more than 10 is( ),1 less than 17 is( )。 11 16 15 17 (2) ( )is before 16.( )is after 16. (3)( )ten and ( )ones make 15. 1 5 直尺 3 1 (4)( )ones and( )ten make 13. 17 (5)Between 16 and 18 is( )。
13
What you have learned today?