Projects: Sharing | Types: Concept, Technology
用最簡單易明的比較方式及放大縮小方式，就可以生動活潑地教導大人或小朋友關於生命及單位的概念，非常好。到Amazing Cells的網頁試驗一下吧：
http://learn.genetics.utah.edu/content/begin/cells/scale/
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