
Re: Simplifying Algebraic Expressions with Subtracted Expressions
Posted:
Nov 18, 2013 8:05 AM


> On Nov 17, 2013, at 7:42 PM, Pam <Pamkgm@hotmail.com> wrote: > > Why, oh why, would I not use the information given?? 3/5 is three fifths! "Magically"? There is no magic involved, simply an understanding of fractions!
But if you understand fractions, then wouldn't you just do the arithmetic at that point?
> >> >>> See? Simply algebra but without having to know how >> to do algebraic manipulations with variable letters. >> >> I don't understand what you mean? > > An algebra mirror then. The solution via bar diagrams mirrors the algebraic solution. Although, since in both we are manipulating unknowns, simply with different representations, I think algebra is not such a stretch.
It has some of the same elements as algebra, but lacks the transformative elements that promote reuse and generalization. But I agree that it is on the path. Sans the crayons.:) I still get the hint that you think this (even my version) is a replacement for algebra.
Bob Hansen

