
Re: Simplifying Algebraic Expressions with Subtracted Expressions
Posted:
Nov 18, 2013 10:33 AM



> Perhaps because your approach requires "magic" and "reverse engineering" and my approach does not?
Geez, now you seem to be back to claiming you have a gimmick that avoids math.
> > Gosh, Bob, only and ever in your arrogant and biased misinterpretation of "what I think". Born not in small part from your ignorance of how the use of bar diagrams develops throughout the curriculum, as well as your reactionary response to approaches different from your own.
At least I state what I believe. Have some balls and do me the same curtesy. I don't have any ignorance of how to do bar diagrams, yours, mine or anyone's. I just would never offer them as a substitute for math. I would rather try to teach actual math and fail than pass off some substitute. Not without some sort of disclaimer. Do you or do you not ever get your students past this phase? Do they ever learn how to arithmetic with fractions? Do they ever learn algebra? These aren't hard questions Pam. Either you are preparing these students to do math like everyone that does math does it, or you have some explaining to do, because no one does math with manipulative like this outside of that isolated period of time in elementary school.
> > And, again, NOT your version, if you refer to the sundae/bush problems. Yes, your mistaken version if you refer to the tart problem with its different unknown requiring a different approach. > > And, please, could you not include my email address in your reply? It is appearing in your replies for any and all to see. Thanks.
I'll do what I can. It wasn't intentional, I replied the same way to your posts as I have to 5000 posts prior.
Bob Hansen

