Algebra Rizing
in [Lisp]
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From: Kenneth Tilton on 13 Jun 2010 22:15 Lisp + qooxdoo + jsMath: http://teamalgebra.com/ There several problems on this page: (1) ironically, a missing disclaimer that the /editor/ is just starting to get ported to the Web from Tcl/Tk so don't veer too far from the examples. (2) "Lesson Structure" is blank (but the structure itself is obvious (3) See how some examples are annotated? They all are, only most do not appear. (4) I need help on the jsMath/TeX to get the red bar not to take up any space (it's throwing off the kerning) Anyway: click on each yellow box in turn and type exactly the characters shown, as guided by the legend. Eventually you'll be able to type pretty easily the simple stuff, enough for Algebra One, anyway. kt -- http://www.stuckonalgebra.com "The best Algebra tutorial program I have seen... in a class by itself." Macworld -- http://www.stuckonalgebra.com "The best Algebra tutorial program I have seen... in a class by itself." Macworld
From: Kenneth Tilton on 14 Jun 2010 00:06 Ooops. Only on Windows. Investigating. kt Kenneth Tilton wrote: > Lisp + qooxdoo + jsMath: http://teamalgebra.com/ > > There several problems on this page: > > (1) ironically, a missing disclaimer that the /editor/ is just starting > to get ported to the Web from Tcl/Tk so don't veer too far from the > examples. > > (2) "Lesson Structure" is blank (but the structure itself is obvious > > (3) See how some examples are annotated? They all are, only most do not > appear. > > (4) I need help on the jsMath/TeX to get the red bar not to take up any > space (it's throwing off the kerning) > > Anyway: click on each yellow box in turn and type exactly the characters > shown, as guided by the legend. Eventually you'll be able to type pretty > easily the simple stuff, enough for Algebra One, anyway. > > > > kt > > > > -- http://www.stuckonalgebra.com "The best Algebra tutorial program I have seen... in a class by itself." Macworld
From: Tim Bradshaw on 14 Jun 2010 05:33 On 2010-06-14 03:15:05 +0100, Kenneth Tilton said: > (4) I need help on the jsMath/TeX to get the red bar not to take up any > space (it's throwing off the kerning) I don't know if jsMath supports this, but the TeX way to make something take no horizontal space is \llap or \rlap: \llap makes a zero-width box with its contents aligned against the right end of it, which means they overlap to the left, and \rlap does the same but aligned against the left end, so it overlaps to the right. It does appear on very slight investigation that jSMath supports this. I only played very slightly with the web thing but it makes working noises - looks pretty cool. I disagree with the "automatic exponentiation" thing.
From: Kenneth Tilton on 14 Jun 2010 06:51 Tim Bradshaw wrote: > On 2010-06-14 03:15:05 +0100, Kenneth Tilton said: > >> (4) I need help on the jsMath/TeX to get the red bar not to take up any >> space (it's throwing off the kerning) > > I don't know if jsMath supports this, but the TeX way to make something > take no horizontal space is \llap or \rlap: \llap makes a zero-width box > with its contents aligned against the right end of it, which means they > overlap to the left, and \rlap does the same but aligned against the > left end, so it overlaps to the right. It does appear on very slight > investigation that jSMath supports this. Thx. Yeah, the author Davide gave me this: \\smash{\\rlap{\\kern-.1em\\color{red}{\\vert}}} But I may have messed with it and broken it. I'll check with him. > > I only played very slightly with the web thing but it makes working > noises - looks pretty cool. Thx. That means (no surprise) you have jsMath fonts installed. I just added fallback fonts to the server to support non-installees. > I disagree with the "automatic > exponentiation" thing. > What do you want to have happen if you type "x" and then "2"? Leave it as an implied product "x2"? How about the sequence "(x-2)2"? Also an implied product? Meanwhile, wow, jsMath has changed my life. Thx for the heads up. I knew there was a reason I hang out with the yobbos in this group. This is also where I learned about qooxdoo. Sadly, no introduction yet to Anna Kournikova*. kt * Playing Wimbledon this year!! -- http://www.stuckonalgebra.com "The best Algebra tutorial program I have seen... in a class by itself." Macworld
From: Tim Bradshaw on 14 Jun 2010 08:13
On 2010-06-14 11:51:03 +0100, Kenneth Tilton said: > What do you want to have happen if you type "x" and then "2"? Leave it > as an implied product "x2"? How about the sequence "(x-2)2"? Also an > implied product? yes I think so. I'd expect to type x^y to get, well, x^y, for any x and y I think. However I'm probably not your target audience, because I'm perverted by years of typing at TeX (albeit most of those years are a long time ago now...). Anyway, there's the germ of a good thing there I think. |