EP359《你以為A4只是辦公紙?它的長寬比其實超神奇!》 episode artwork

EPISODE · Jun 12, 2025 · 5 MIN

EP359《你以為A4只是辦公紙?它的長寬比其實超神奇!》

from 每天五分鐘 · host 陳揚

你知道嗎? 我們每天拿在手上的 A4 紙,不只是「剛剛好」那麼簡單。 它背後藏著一個超級優雅的數學概念——更號(√2)比例。 這種比例,讓A4紙怎麼折、怎麼放大縮小,都可以不變形、不失真 甚至還和建築、繪畫的黃金比例美感有微妙連結! 這集,我們就來聊聊這張看似平凡的紙 是怎麼結合數學、設計與實用精神,成為世界最常見的紙張規格! =============================================================== ISO 216 國際標準 – 國際標準化組織對紙張尺寸的規範。 Wittfoht, H. (1984). The ISO paper sizes. DIN Deutsches Institut für Normung. Bouma, J. J. (2009). The A-series paper sizes and their properties. Harel, G., & Sowder, L. (1998). Students’ proof schemes: Results from exploratory studies. CBMS Issues in Mathematics Education, 7, 234–283.(提及學生理解抽象數學與日常物品連結的策略) -- Hosting provided by SoundOn

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EP359《你以為A4只是辦公紙?它的長寬比其實超神奇!》

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