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a quick math challenge
12-27-2013, 04:16 PM
Post: #4
Katie Wasserman Offline
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RE: a quick math challenge
Quote: I teach the divisibility-by-3 rule to my middle school math students, but I know that it is promptly forgotten by the time they get to high school.


Really? I thought that this rule is known to everyone and it's as nearly common knowledge as divisibility by 2. Even people that I would call innumerate know this when I've asked them.
-katie
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Messages In This Thread
a quick math challenge - Don Shepherd - 12-27-2013, 05:03 AM
RE: a quick math challenge - Han - 12-27-2013, 05:12 AM
RE: a quick math challenge - Don Shepherd - 12-27-2013, 12:47 PM
RE: a quick math challenge - Katie Wasserman - 12-27-2013 04:16 PM
RE: a quick math challenge - Don Shepherd - 12-27-2013, 04:43 PM
RE: a quick math challenge - Paul Dale - 12-27-2013, 10:53 PM
RE: a quick math challenge - Les_Koller - 12-28-2013, 10:06 PM
RE: a quick math challenge - Waon Shinyoe - 12-29-2013, 02:19 PM
RE: a quick math challenge - Thomas Klemm - 12-29-2013, 03:37 PM
RE: a quick math challenge - aurelio - 12-29-2013, 06:31 PM
RE: a quick math challenge - Curlytop - 12-31-2013, 03:03 PM
RE: a quick math challenge - Thomas Klemm - 12-31-2013, 05:38 PM
RE: a quick math challenge - Curlytop - 12-31-2013, 03:05 PM
RE: a quick math challenge - Curlytop - 12-31-2013, 07:25 PM



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