@Alex Smith You are probably right. Using this multiplikation factor will avoid the need for the lengthy convert command. And besides: the student will learn something!

Erik

A minor correction to the picture:

Erik

@Preben Alsholm 

As mentioned it was the person responsible for IT at our school who experienced problems. I will very soon test it myself. We are using Document Mode and 2Dmath. Also I will install Windows 10 from scratch (ISO file). I just need to take backup and clone my harddrive, not to take any chances ...

Erik

@cskoog 

I read your comment on Windows 10 support from June. The man handling IT at our school has tested Maple 2015 on a Windows 64 bit machine and he received error messages. I haven't tried it myself yet, though. If this example is not unusual, it can be a severe problem, because students buying new Windows computers will likely buy one with Windows 10 pretty soon. And quite a few students will get into trouble. I think it is crucial that Maplesoft will produce an update before the the release of Maple 2016. It cannot wait until then, I am pretty sure. Also quite a few using Windows 7 or 8 might well choose the free upgrade in the coming weeks ...

Erik

@nm 

It will not surprise me if there are some Maple stuff that won't run properly in the browser. But if part of it works it could be a good choice in that situation.

When dealing with stuff intended for my students there are no problems: Then we will use Maple itself of course (They all have a timelimited student license for it). So no need for Maple Player here.

The other completely different situation is when a user (not necessarily my students) find my website. Let's assume I have a Maple animation for them to watch, BUT they just need to download Maple Player via a link. Well, I think very few users, maybe 9 out of 10 will probably forget about it and just watch the other stuff on the page. It is my impression very few users will actually take the time or effort to download and install this application. Besides they might even be unsure of the security of this application? Not that many people know about Maple. 

So I hope I am making it clear: 99% of the time I am using Maple by myself or with my students - sharing mw files via MapleCloud. They even turn in homework solved in Maple! Then in 1% af the cases I would like to put an illustration or Maple animation on my website for (other) people to watch or interact with. Here I prefer it to run in the Browser.   

@Markiyan Hirnyk 

I didn't know about MapleWWW. It is definitely something I will check out soon. Thanks!

Erik

@acer 

Forgot to comment on Maple T.A. We have had presentations for this tool at a Lecture. The idea looks very promising, but my impression is that it still lacks some 'ease of use' to get widespread. It is still a bit too complicated for ordinary teachers to produce quizzes of a medium complexity. Hopefully it will be improved in v11. Also I think it requires a 'package' or library of already produced quizzes, for people to start on ... 

When those obstacles are overcome, I think it will be very valuable for tests, but not the least for students to test themselves on a daily basis.

Erik

@acer 

Thanks for reminding me that MapleCloud has gone viral, making it possible to sent another person an URL to find it. That is really a great step.

According to using MapleCloud, I have done so since it started up about five years or so ago :) In my classes, we have sent material to one another. Besides I have been using the Opaque option to use it to turn in test solutions.

Erik

@Carl Love 

Brillant Carl! I found an expression for the exact radius of the Icosahedron. After rearranging (after my own liking) I use the following code, displaying the football with and without the wireframe. 

_________________________________________

restart;
with(geom3d), with(plots):

PlotFootball := proc(L::list)

    local FootballFaces;

    uses geom3d, plottools, plots;

      TruncatedIcosahedron(football, point(C, 0, 0, 0), 1);
      FootballFaces := seq(polygon(faces(football)[i], color = `if`(nops(faces(football)[i])=5,L[1],L[2]), linestyle=solid, tickness=3), i = 1 .. 32);
    display(FootballFaces, axes = none);

end proc:

plot1:=PlotFootball([red,yellow]); #plot football only and assign to name

R:=1/109*(15*sqrt(5)-12)*sqrt(25+4*sqrt(5)):
plot2:=draw(icosahedron(Icosa,C,R),style=wireframe,thickness=4):

display(plot1,plot2); #plot football with wireframe of Icosahedron

_________________________________________

I also tried displaying a sphere around the football, but somehow Maple didn't like using the geom3d package along with the plottools package. Using them together gave an error message. Anyway I don't really know if it is useful, because it will be hard to see if all vertices is lying on this sphere ...

NB! Impressing how I always receive a bunch of very usefull answers on Mapleprimes. Great website!

Erik

@erik10

I got an idea for an additional challenge. Obviously the Truncated Icosahedron can be thought of as as an Icosahedron being truncated with a knife making the red faces. It could be very illustrative to have the original Icosahedron added to the plot as a wireframe. Is this possible? The vertices of the Icosahedron will lie on a sphere with radius a bit larger than 1, so it needs to be calculated at first ...

Erik

@Kitonum 

Beautiful!!

Erik

@Kitonum 

Thanks a lot. A Beachball :)

Erik

@acer

Great! That will indeed be appreciated!

Erik

Wow! Thanks to all of you. I didn't know about the draw command. I guess Maple simply has many tools to accomplish the same thing. But also sometimes Maple is so big it is hard to know about every smart command to do the job ... It requires more overview pages, but maybe Maple already have that?

NB! Still puzzled though, that this polyhedron is not supported by the polyhedraplot command. The support list contain a long list with more or less obscure polyhedra, but maybe there is a reason ...

Erik

@Carl Love 

Great! I will test it.

Erik