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Teachers' Lounge Discussion: Value of two-column proofs

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From: Gordon Bockus

To: Teacher2Teacher Public Discussion
Date: 2002031517:51:05
Subject: Re: Value of two-column proofs

I definitely think proof should get more emphasis in geometry than it
has in the past few years. I teach both the two column proof method
and the flow proof method. After a while I let a student use whichever
method they feel more comfortable and competent doing.  I look at
proofs as very structed problem solving. If a student is able to
master geometric proof, they will be more successful at higher levels
of mathematics.  The last time we adopted textbooks, four years ago,
not many of the geometry texts included proofs as part of the course
except for a brief introduction in the back of the book.

Proof should be taught! Two column or Flow, so long as it is taught.
	

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