In-line Fraction with Horizontal Line

Jim Ault JimAultWins at yahoo.com
Tue Mar 7 21:55:49 EST 2006


On 3/7/06 1:08 PM, "Jim Hurley" <jhurley at infostations.com> wrote:

> To answer your question, I guess I would  try using separate fields
> for the num and dem of the fraction with a graphic line in between. I
> presume the slope is always represented by the fraction?
> 
You could hide/show/move fields that represented the components of the
equation, eg
fld partBeforeDiv
fld partAfterDiv
image divShort
image divMedium
image divLong
image sqRootThin, sqRootTall, sqRootTail

detect the number of div images required
set the left,top of each field, opaque false, with the correct image
beneath.

The editable field can now be represented more correctly.
Might work :-)

Jim Ault
Las Vegas



>> 
>> Message: 33
>> Date: Mon, 6 Mar 2006 19:55:55 -0700
>> From: Mark Greenberg <markgreenberg at cox.net>
>> Subject: In-line Fraction with Horizontal Line
>> To: Runtime Revolution <use-revolution at lists.runrev.com>
>> Message-ID: <2051D937-8163-4405-A04C-5823B9B6E558 at cox.net>
>> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>> 
>> Fellow list members, I have a problem for which I can only find
>> difficult or unsatisfactory solutions, and I was hoping you might
>> have some suggestions.
>> 
>> I am making a stack to teach students math -- linear equations, to be
>> more precise.  When I display the y = mx + b form, the best I can do
>> to show a fraction in the m position is something like y = 4/5x + 2.
>> This is ambiguous because it isn't clear what should be taken as the
>> divisor, 5 or 5x or 5x + 2.  The math teacher for whom I am making
>> the game would prefer a horizontal division line instead of a slash.
>> 
>> So far this is what I've thought of and rejected:
>> 
>> Use fonts that have fractions built in as one character.  No, because
>> they have too few for the range of possible slopes I want to generate.
>> 
>> Force the numerals around as subscripts and superscripts until it is
>> clear what the fraction is.  Messy and probably won't lead to success.
>> 
>> Use inline images.  Need too many images to cover possible slopes.
>> 
>> Write it y = (4/5)x + 2.  This is mathematically acceptable, but not
>> the way the students will see it elsewhere.
>> 
>> Use a different 2-line field that moves according to the location of
>> the fraction.  Hmm.. maybe.
>> 
>> I could use some help on this one.
>> 
>> TIA,
>> Mark
> 
> 
> Mark,
> 
> This won't help you with this question but  the math teacher might be
> interested in SupAndSub.rev
> 
> It facilitates typing equations.
> 
> In the message box:
> 
> go url "http://home.infostations.net/jhurley/SupAndSub.rev"
> 

> Jim
> 
>> 
>> 
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