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- Xref: sparky sci.math:18686 misc.education:6098
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!menudo.uh.edu!jpunix!elgamy!elg
- From: elg@elgamy.jpunix.com (Eric Lee Green)
- Message-ID: <00727673896@elgamy.jpunix.com>
- Date: 21 Jan 93 21:38:16 CDT
- Newsgroups: sci.math,misc.education
- Subject: Re: Why algebra and what is important?
- Distribution: world
- Organization: Eric's Amiga 2000 @ Home
- References: <C105z9.J6t@mentor.cc.purdue.edu> <190744.12287mccarthy@washpost.com>
- Lines: 40
-
- From article <C105z9.J6t@mentor.cc.purdue.edu>, by hrubin@pop.stat.purdue.edu (Herman Rubin):
- > The failure of people to use mathematics intelligently is, IMO, due to
- > this failure to use symbols. It is similar to the problems in using
- > natural languages to communicate. This use of symbolism, however, should
- > not wait until high school, but should be taught as early as possible.
- > There is no point in teaching physics or chemistry or biology, beyond
- > memorization and carrying out routine procedures under the direction of
- > someone who understands, if the use of symbols is not understood.
-
- Anybody who thinks Algebra is irrelevant to real life has never tried to
- solve a system of linear equations to detirmine the best values for
- price/volume tradeoffs...
-
- Anywho: I agree about symbols. I have a bunch of problem-solving decks that
- I toss out to my brighter kids. Simple stuff, mostly. Anyhow, a kid handed
- me a card that stumped him. I said, hmm, let me see, we have an unknown X
- and unkown Y, , 3 * X + Y = 12, X + Y = 6 (just a couple of swift equations
- off the top of my head), let's see... X and Y are natural numbers since
- we're talking number of beans in this problem... so X is somewhere between
- 0 and 6, and Y is somewhere between 0 and 6, and you can use "try and
- check" to brute-force it since 4th graders don't know how to solve a system
- (X=3,Y=3, by the way)... but then he asks, "What's all this X and Y
- stuff?!". Whoops!
-
- So much just doesn't make sense if you don't know how to formulate a
- real-world problem as symbols. I don't know how they expected a 4th grader
- to solve this problem without being able to write equations.
-
- BTW: Herman notes in another message that he discounts the "basics". Well
- -- unfortunately, all mathematics taught at higher grade levels assumes
- that the kid can do basic arithmetic without the aid of a calculator. As
- much as I wish otherwise, basic arithmetic is thus what I have to teach.
- I play with math with the kid who can play math well, but otherwise,
- well... how can a kid pass the TAAS (required to go to the next grade
- level) if he can't add, subtract, multiply, or divide? Answer: He can't.
-
- --
- Eric Lee Green elg@elgamy.jpunix.com Dodson Elementary
- (713) 664-6446 Houston, TX
- "Kids are kids, no matter what"
-