Page 28 - 新思维数学活动用书1 样章
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1.5 Odd and even numbers
5 Draw an odd number of socks on the ten frame.
Make it easy to see that there is an odd number of socks.
Challenge
6 How can you describe an odd number?
How can you describe an even number?
Are there any numbers that are odd and even?
Why?
7 Zero is an even number but you cannot put 0 cubes into twos.
Why is 0 an even number?
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