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Q&A #18119

Teachers' Lounge Discussion: "Bottoms up" as a method to factor trinomials

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From: Stuart Culver <sculver@swchrisitan.org>
To: Teacher2Teacher Public Discussion
Date: 2012120610:08:47
Subject: Re: Re: Bottoms up


I agree.  I do not care for this method as it is just a method, not
promoting understanding.  Even an intuitive explanation of why is
works would be great for beginning algebra students, otherwise it just
turns into something to memorize like a recipe.  

The common called "trial and error" method promotes number sense and
students see what's happening.  Once students develop good number
sense there is much less random trials of pairs of numbers.

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