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RE: primes.utm.edu

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  • Chris Caldwell
    I think all is well with the server move. Please e-mail me directly if you observe in odd behavior. ... From: primenumbers@yahoogroups.com
    Message 1 of 2 , Apr 5, 2013
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      I think all is well with the server move. Please e-mail me directly if you observe in odd behavior.

      -----Original Message-----
      From: primenumbers@yahoogroups.com [mailto:primenumbers@yahoogroups.com] On Behalf Of Chris Caldwell
      Sent: Friday, April 05, 2013 3:19 PM
      To: primenumbers@yahoogroups.com
      Subject: [PrimeNumbers] primes.utm.edu

      After 617 days of up time, the computer center is shutting down and moving the primes.utm.edu web server. Should all go well, it should only take 15 minutes to move it to another rack and restart it. (You got as much notice as I did! They did offer to do it Monday morning while I have four classes to teach... but I went with now so I could hopefully have time to address problems.)

      CC


      -----Original Message-----
      From: primenumbers@yahoogroups.com [mailto:primenumbers@yahoogroups.com] On Behalf Of Jack Brennen
      Sent: Friday, April 05, 2013 3:13 PM
      To: primenumbers@yahoogroups.com
      Subject: Re: [PrimeNumbers] Re: Cute dice problem

      The math required to understand the "easy" solution to the dice problem is easily within the realm of 8th grade mathematics.

      The insight required to come up with the easy solution, while under time pressure... That's another issue entirely. To get to the insight requires recognizing that for 4 dice (and for 4 dice only!), you can replace "prime" with "coprime with 6". Transforming a problem into an equivalent easier problem -- that's something that is really hard to master. (And almost certainly something that most 8th graders have not been taught in school.)



      On 4/5/2013 12:52 PM, Chris Caldwell wrote:
      > I also enjoyed that test (the ACM-12) as a child, but of course that
      > test is for students 4 years older than this test for Tennessee youth
      > (only) is. Also this test is supposed to be limited to the state
      > standards, so should not be the level of the ACM-8 either . But you
      > are right in that they are designed to not allow the dreaded perfect
      > scores (or even tied high values).
      >



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