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美国的数学问题解决教学是建立在波利亚问题解决四阶段基础上；
The mathematic problem solving teaching in American is built on the basic of four stages of G.
youdao
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美国的数学问题解决教学是建立在波利亚问题解决四阶段基础上；
The mathematic problem solving teaching in American is built on the basic of four stages of G.
youdao