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俊英
塾の窓から見える風景
11月27日 [] 21:19
てんびんの原理の相似への応用(Application of balance to the similar figures)
The students in the ninth grade are studying the similar figures now.
To solve the difficult question, using the theory of the balance is sometimes useful.

I didn't know the theory once.
When I wrote the article in my blog, I studied the theory a little deeply.
So I could teach it to the class.

To write my blog is useful for me.

晴れ
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