评价是一种人类有意识的活动，其实质在于促进人类活动的日趋完善，是人类行为自觉性与反思性的反映。

As a kind of conscious activity of human beings that reflects the consciousness and introspectiveness of human behavior, the evaluation is to perfect the human activity gradually.

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因此反思性数学学习是数学学习活动的最重要的环节，但它是目前数学学习中最薄弱的一个环节。

So, rumination in mathematics learning is a key link in mathematics learning activities . But now it is a weak one among students.

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教书是一种有目的的、反思性的活动。

Teaching is a purposive and rewarding activity.

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