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- From: john@jlc.mv.com (John Leslie)
- Subject: Re: Is Math Hard?
- Message-ID: <1992Nov17.231417.7407@jlc.mv.com>
- Organization: John Leslie Consulting, Milford NH
- References: <1992Nov10.004159.29572@news.Hawaii.Edu> <1992Nov10.083705.2187@news.Hawaii.Edu> <00721698581@elgamy.uucp.taronga.com>
- Date: Tue, 17 Nov 1992 23:14:17 GMT
- Lines: 29
-
- In article <00721698581@elgamy.uucp.taronga.com> (Eric Lee Green) replies to:
-
- >From article <1992Nov11.212710.18633@eng.umd.edu>, by (Charles Lin):
- >>
- >> ... one problem that poorer youths had was the inability to accurately
- >> tell time or estimate how much time something would take.
- >
- > The "levels system" requires that a timer be going off once every fifteen
- > minutes. Soon the kids tell YOU when fifteen minutes have passed (if you
- > forgot to set the timer).
-
- Charles talked about two things -- measuring time and estimating the time
- required. Eric correctly notes that kids do just fine at _measuring_ time.
-
- I think Charles meant to emphasize the second skill -- estimating how
- much time a job will require. The system Eric describes _prevents_ kids
- from learning the second skill, because they never complete any job --
- they only wait for the timer to go off.
-
- In my experience, very few students learn to estimate jobs well. Those
- that do learn are neither richer nor poorer -- they're ones that regularly
- do tasks (such as homework) which they alone are responsible for completing.
- I strongly support making planning and estimating a formal part of projects.
- When I do this with high school students, I try not to second-guess their
- estimates -- merely guide them through a formal process of putting it on
- paper and calculating. Later I let them review their estimates, to see
- where they went wrong.
-
- John Leslie <john@jlc.mv.com>
-