[Blindmath] suggestions for accessible 3d graphing paper giids

[I. C. Bray]

I think they are thinking about Isometrics too...
Keep in mind though, I'm reading old posts, and trying to catch up... Been 
slacking in my ListServs... (blush)


Can you tell us more about the Sphere though?  I never knew that!!

Ian



----- Original Message ----- 
From: "Rasmussen, Lloyd" <lras at loc.gov>
To: "Blind Math list for those interested in mathematics" 
<blindmath at nfbnet.org>
Sent: Friday, November 22, 2013 9:48 AM
Subject: Re: [Blindmath] suggestions for accessible 3d graphing paper giids


: I'm not sure that the problem is being well described.  Perhaps we are 
talking about isometric or perspective projections of solids.  I didn't look 
at the web site you cited.  I tend to think of solid surfaces, such as 
hyperbolic paraboloids, or conic sections.  Remember that the first person 
to prove that you could evert a sphere (turn it inside out without breaking 
anything) was a totally blind French mathematician.
:
: Lloyd Rasmussen, Senior Project Engineer
: National Library Service for the Blind and Physically Handicapped
: Library of Congress   202-707-0535
: http://www.loc.gov/nls
: The preceding opinions are my own and do not necessarily reflect those of 
the Library of Congress, NLS.
:
:
:
: -----Original Message-----
: From: Blindmath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of Bente 
Casile
: Sent: Friday, November 22, 2013 9:33 AM
: To: 'Blind Math list for those interested in mathematics'
: Subject: Re: [Blindmath] suggestions for accessible 3d graphing paper 
giids
:
: For 3-D graphing you need an x, y, and z axis so I don't think you will 
find what we would call accessible because the z axis is technically rising 
up in the air from the origin.  He will be creating graphs that look like 
they are floating in the quadrant based on their coordinates. The best you 
may be able to do is to put different colors on each axis x,y, and z with 
colored sharpies to help him as he follows the coordinates given in the 
problem. If he has trouble understanding the concepts you can re-create the 
quadrants by using index cards so he can conceptualize the change in the 
quadrant system.
: I did this years ago by putting slits halfway through index cards and then 
we put them together so we could see the 8 pockets of space that now existed 
because of the addition of the z axis.  Hope this helps.
:
: Bente Casile
: -----Original Message-----
: From: Blindmath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of Mary 
Woodyard
: Sent: Friday, November 22, 2013 4:59 AM
: To: blindmath at nfbnet.org
: Subject: [Blindmath] suggestions for accessible 3d graphing paper giids
:
: My son will be starting a 3d graphing unit that is fairly short (2 weeks) 
in about a week.  He spent some time searching online with his Math tutor 
for 3d Graphing paper and this is the graph paper that they found that 
worked the best for his vision from what they were able to find in free 3d 
graph paper options.  Does anyone know of a more accessible free (or low 
cost) option?
:
: Thanks,
:
: Mary Woodyard
: Parent, 17 year old visually impaired student
:
:
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