sage-edu Google Group

Re: [sage-edu] Re: hmmm ... this is interesting

2009-11-29T23:34:51Z

On Sun, Nov 29, 2009 at 1:04 PM, Luiz Felipe Martins

This is now trac 7556:

William

Re: Sage TA?

2009-11-29T21:56:11Z

I have an undergraduate student interested in a summer project writing
routines in Sage that will create "nice" problems in linear algebra.
Matrices that row-reduce nicely, have nice kernels and column spaces,
nice eigenvalues and eigenspaces, etc. I call it "linear algebra over
the integers" when I'm in a joking mood.

Re: [sage-edu] Re: hmmm ... this is interesting

2009-11-29T21:04:35Z

This is how round(x) is in the C library:
([link])

Function: double round (double x)

— Function: float roundf (float x)

— Function: long double roundl (long double x)

These functions are similar to rint, but they round

Re: hmmm ... this is interesting

2009-11-29T16:33:53Z

This is because in the code for rounding, an element's own round
method is tried before converting to a float. The round function for
rationals rounds up if its exactly halfway:

else:
q, r = self.numerator().quo_rem(self. denominator())
if r < self.denominator() / 2:
return q

hmmm ... this is interesting

2009-11-29T15:47:48Z

sage: round(4.5)
5.0
sage: round(9/2)
4.0

I noticed some strange behavior in a graph and tried to narrow down the
issue. This was it.

--
"Computer science is the new mathematics."

-- Dr. Christos Papadimitriou

Re: [sage-edu] Re: Sage TA?

2009-11-29T12:38:55Z

I have the similar idea, about Python-based system, having improved WeBWorK
capabilities. Whether using Maxima interface (+ maybe matplotlib and mayavi2
for plotting),
or to use (the subset of) Sage, this is a question.

This semester we use Webwork for the curse of multidimensional calculus but,

Re: Sage TA?

2009-11-29T09:18:00Z

To show what I want, it's easiest just to copy and paste from the
Maple TA page at [link]

just rely on content written by other

* Includes an easy-to-use question bank editor, algorithm
designer, and assignment editor
* Hundreds of sample questions available, which can be used as-is

Re: Sage education day 2

2009-11-29T04:56:44Z

That sounds great - what aspects of education, what levels?

Before: Mostly making sure that interested people will know about it,
making sure that you have enough people and topics to make it
coherent; in our case, having Nathan Carter's Lurch project as part of
it made it easier to make it also a place for people to let us know

Re: Sage TA?

2009-11-29T04:53:07Z

And, as a followup, does WebWorK already have most of what you need in
terms of this functionality (if I'm interpreting this right)? Making
a "Sage TA" from scratch sounds like a lot of work...

- kcrisman

Re: [sage-edu] Sage TA?

2009-11-29T00:39:30Z

What would it do? "Teaching and assessment" seems a little too vague
for me to understand.
What's an absolutely minimal list of features that "Sage TA" would
have to have to make you
a satisfied customer?

William

Sage TA?

2009-11-29T00:06:13Z

Over two years ago there were some discussions on the sage-support
group about the idea of "Sage TA", a Sage version of Maple TA, the
teaching and assessment package produced by Maplesoft. I have spent
several years, and a fair amount of grant money, buying and trying to
use Maple TA at my own university, and I have been very disappointed

Sage education day 2

2009-11-28T12:33:04Z

Hello,

In February we will have the Sage days 20. The wednesday will concern
essentially Sage in education. Could we consider it as Sage education
day 2 ?

I will be enlighted on any comment from the organizers of the Sage
days 1 (before and after).

Vincent

Re: [sage-edu] virtual machine and sage: newcomer questions....

2009-11-24T19:27:12Z

Also, WIlliam,
I heard this is not (i.e. through Firefox) a stable way to work? Is it right?
Bests,
Jenya

Re: [sage-edu] virtual machine and sage: newcomer questions....

2009-11-24T18:53:53Z

I am not able to connect to my network right now....but will try as soon as I am home....Could you please give suggestions on how to to get to my folder on the actual desktop within the script? THANKS
Jenya

Re: [sage-edu] virtual machine and sage: newcomer questions....

2009-11-24T18:50:35Z

There should be a little window that says something like:

Open [link] in your web browser under Windows.

If you see that windows, open it in Firefox under Windows 7.

-- William