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1 one Counting units
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2 ones
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3 ones
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4 ones
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5 ones
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6 ones
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7 ones
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8 ones
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9 ones
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10 ones is 1 ten.
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10 ones is 1 ten. 本资料来自于资源最齐全的21世纪教育网 10 ones. 1 ten is
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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
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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
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3 ones 1 ten 13
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15 ﹖
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16 16 ?
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18 16 ?
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16 ? 2 tens is 20. 20 is 2 tens.
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The numbers within 20
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Look at the ruler, count from 0 to 20.
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Count from 7 to 18.
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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( )。
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