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一就是一...还是？ ── Christopher Danielson
1,432,173 views |
Christopher Danielson |
TED-Ed
• May 2012
Read transcript
看完整版: http://ed.ted.com/lessons/one-is-one-or-is-it 一袋苹果，一颗苹果，一片苹果-哪个才是‘一个单位’？探索基本的数学单位（从杂货店得到的知识！）然后发现许多意思在“一”之中。 讲解：Christopher Danielson, 动画：TED-Ed.
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