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１は１…本当に？
1,432,173 views |
Christopher Danielson |
TED-Ed
• May 2012
Read transcript
リンゴ１袋、リンゴ１個、リンゴ１切れ — どれが１つの単位なのでしょうか？数学の基礎的な単位について学び（スーパーへの買い物で説明します）１が持つ様々な意味を理解しましょう。 この教材のページ: http://ed.ted.com/lessons/one-is-one-or-is-it 先生: クリストファー・ダニエルソン アニメーション: TED-Ed
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