Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Education » math-teach

Topic: reading numbers
Replies: 0  

Advanced Search

Back to Topic List Back to Topic List  
Michael Moy 24-Feb-1995 1532

Posts: 5
Registered: 12/6/04
reading numbers
Posted: Jun 20, 1995 3:51 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

>If you can stand it, here's one more point on the reading numbers
>issue. All of this talk has made me wonder about what those symbols
>(a dot, a four, and a five) really mean. The fact that we always assume
>base ten jumped unbidden into my head. The real way to say it might be
>"radix point 4 5 base ten". Now, I am not suggesting that we teach it to
>kids this way, just a) noticing an interesting aspect of this discussion
>and b) reiterating that there must be some balance between convenience and
>conceptual correctness.


>It also might be a fun thing to think about what .45 is base six, for
>example. Maybe some students would get a "bigger picture" of what the
>radix point means if they could see what it meant with other bases.


In a computer organization class I took some time ago, we had to build various
circuits to do arithmetic (on paper). This included floating point
multiplication and division with a binary representation. This was a good
exercise in manufacturing headaches (it wasn't really that bad).

I frequently work with hex numbers (analyzing memory and crash dumps) and have
lots of opportunities to work in different bases (usually 2, 10 and 16).
Perhaps teaching computer organization (real computer science - not computer
usage) would help with a math appreciation of working in different number
bases.

michael





Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.