Re: [sage-edu] Re: how to unshare files that have been shared with you?
Many thanks .. that worked fine .. :) My problem was that I had not previously tried a terminal session, had only used the notebook interface, in FireFox...so I was looking to start a command line session out of the browser, instead of the server... We old folks get confused easily Again..thank you! On Mon, Feb 6, 2012 at 1:12 PM, kcrisman wrote: > > > On Feb 6, 1:40 pm, John McNally wrote: > > On a (twice) related note.. I installed Sage 4.7 in my iMac and then > forgot > > my LOCAL > > password. :( > > > > Is there ANY way I can change or recover THAT one ? > > Yes, this should be okay, assuming you're talking about the notebook > password and not your Mac password :) > > See > http://www.sagemath.org/doc/reference/sagenb/notebook/notebook_object.html > , > in particular "reset". If you launch Sage from the command line, then > the part with "reset – boolean (default: False) if True allows you to > set the admin password. Use this if you forget your admin password." > should do what you need. If you have the app, you should be able to > get a command line from the icon in the bar at the top of the screen. > > -- > You received this message because you are subscribed to the Google Groups > "sage-edu" group. > To post to this group, send email to sage-edu@googlegroups.com. > To unsubscribe from this group, send email to > sage-edu+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-edu?hl=en. > > -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] Re: how to unshare files that have been shared with you?
On Mon, Feb 6, 2012 at 8:26 PM, dimpase wrote: > > > On Tuesday, February 7, 2012 12:37:38 AM UTC+8, A. Jorge Garcia wrote: >> >> Jason Grout <> wrote: >>> >>> On 2/6/12 9:28 AM, Andrey Novoseltsev wrote: >>> > It seems that there is email field in users >>> > profile, can't it be used to reset the password? >>> >>> We should have that feature; a big +1. Dan Drake worked a bit on also >>> using email to confirm account registration. In fact, if email address >>> is required (a setting in the notebook admin page), a "Forgot password" >>> link appears at the bottom of the login page (see sage.cs.drake.edu, for >>> example). I don't know how well it works, though. Of course, as >>> always, patches are welcome! >>> >>> Should we require email addresses on sagenb.org? >>> >>> Jason >>> >> Requiring email addresses could be a problem. Many schools block email >> clients. So, the student would not be able to confirm the email until they >> got home. Creating accounts the first day of class would be a hassle. It's >> so easy now. I say leave it the way it is! > > > sure enough an OpenID account is easier to deal with than a local account. > > I'd rather try to require all new accounts on sagenb.org to be OpenID. I'm seriously considering doing that. Then all issues of password resets disappear, and I can assume that any user has an account that has been verified by somebody else. William > For > spammers it'd be more hassle to use. > On the other hand it would need a list of allowed OpenID providers... > > Dima > > >> >> Thanx, >> A. Jorge Garcia >> Applied Math and CompSci >> http://shadowfaxrant.blogspot.com >> http://www.youtube.com/calcpage2009 >> Sent via DROID on Verizon Wireless > > -- > You received this message because you are subscribed to the Google Groups > "sage-edu" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/sage-edu/-/5pR6avMS-HwJ. > > To post to this group, send email to sage-edu@googlegroups.com. > To unsubscribe from this group, send email to > sage-edu+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-edu?hl=en. -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] Re: how to unshare files that have been shared with you?
On 2/7/12 10:53 AM, William Stein wrote: On Mon, Feb 6, 2012 at 8:26 PM, dimpase wrote: On Tuesday, February 7, 2012 12:37:38 AM UTC+8, A. Jorge Garcia wrote: Jason Grout<> wrote: On 2/6/12 9:28 AM, Andrey Novoseltsev wrote: It seems that there is email field in users profile, can't it be used to reset the password? We should have that feature; a big +1. Dan Drake worked a bit on also using email to confirm account registration. In fact, if email address is required (a setting in the notebook admin page), a "Forgot password" link appears at the bottom of the login page (see sage.cs.drake.edu, for example). I don't know how well it works, though. Of course, as always, patches are welcome! Should we require email addresses on sagenb.org? Jason Requiring email addresses could be a problem. Many schools block email clients. So, the student would not be able to confirm the email until they got home. Creating accounts the first day of class would be a hassle. It's so easy now. I say leave it the way it is! sure enough an OpenID account is easier to deal with than a local account. I'd rather try to require all new accounts on sagenb.org to be OpenID. I'm seriously considering doing that. Then all issues of password resets disappear, and I can assume that any user has an account that has been verified by somebody else. +1. Right now, we don't have a switch to require only OpenID logins, so we'd have to do that somehow. A huge plus of this is that passwords would no longer be transmitted insecurely, if I understand things correctly. Jason -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] Re: how to unshare files that have been shared with you?
On Tue, Feb 7, 2012 at 9:00 AM, Jason Grout wrote: > On 2/7/12 10:53 AM, William Stein wrote: >> >> On Mon, Feb 6, 2012 at 8:26 PM, dimpase wrote: >>> >>> >>> >>> On Tuesday, February 7, 2012 12:37:38 AM UTC+8, A. Jorge Garcia wrote: Jason Grout<> wrote: > > > On 2/6/12 9:28 AM, Andrey Novoseltsev wrote: >> >> It seems that there is email field in users >> profile, can't it be used to reset the password? > > > We should have that feature; a big +1. Dan Drake worked a bit on also > using email to confirm account registration. In fact, if email address > is required (a setting in the notebook admin page), a "Forgot password" > link appears at the bottom of the login page (see sage.cs.drake.edu, > for > example). I don't know how well it works, though. Of course, as > always, patches are welcome! > > Should we require email addresses on sagenb.org? > > Jason > Requiring email addresses could be a problem. Many schools block email clients. So, the student would not be able to confirm the email until they got home. Creating accounts the first day of class would be a hassle. It's so easy now. I say leave it the way it is! >>> >>> >>> >>> sure enough an OpenID account is easier to deal with than a local >>> account. >>> >>> I'd rather try to require all new accounts on sagenb.org to be OpenID. >> >> >> I'm seriously considering doing that. Then all issues of password >> resets disappear, and I can >> assume that any user has an account that has been verified by somebody >> else. > > > > +1. > > Right now, we don't have a switch to require only OpenID logins, so we'd > have to do that somehow. > > A huge plus of this is that passwords would no longer be transmitted > insecurely, if I understand things correctly. That's my understanding as well. It's really awesome. Are there any other major websites that *require* openid?I wonder what the drawbacks are? -- William > > Jason > > > -- > You received this message because you are subscribed to the Google Groups > "sage-edu" group. > To post to this group, send email to sage-edu@googlegroups.com. > To unsubscribe from this group, send email to > sage-edu+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-edu?hl=en. > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] Re: how to unshare files that have been shared with you?
On 2/7/12 11:08 AM, William Stein wrote: Right now, we don't have a switch to require only OpenID logins, so we'd have to do that somehow. A huge plus of this is that passwords would no longer be transmitted insecurely, if I understand things correctly. That's my understanding as well. It's really awesome. Are there any other major websites that *require* openid?I wonder what the drawbacks are? Well, ask.sagemath.org requires it :). Stackoverflow is another example. It appears that their "own" login solution is just their own openid server. Jason -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
[sage-edu] Re: how to unshare files that have been shared with you?
On Feb 7, 10:00 am, Jason Grout wrote: > > Right now, we don't have a switch to require only OpenID logins, so we'd > have to do that somehow. > > A huge plus of this is that passwords would no longer be transmitted > insecurely, if I understand things correctly. > > Jason This would be wonderful, I don't think many users mind that someone can look at their worksheets, but transmitting passwords insecurely is very bad as they can be the same as for other accounts including banking ones. Would it be possible to start new servers with OpenID authorization out-of-the-box? On the other hand, will encrypted authentication and unencrypted work have the issue of "connecting to an open session"? As outlined here: http://lifehacker.com/5672313/sniff-out-user-credentials-at-wi+fi-hotspots-with-firesheep A somewhat related issue: can it be prohibited to see the list of other users on the sharing screen? My university did not allow me to create accounts for students automatically with their names as logins, since nobody should be able to see who else is in the class and I confessed that they might... Thank you! Andrey -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
[sage-edu] No Sage Output using Sage online
I'm having a new and serious problem using Sage online. When I click "evaluate," it pauses for a second and I get the green bar, but then no output. Really basic stuff like 2+3, but also plot( x, (0,1)). No output. I'm having the same trouble at the shodor server and at sagenb.org, with IE9, Firefox, and Chrome, on different computers running Windows and Ubuntu, on my school's faculty wireless, student wireless, hard-wired connection, and the wireless at the library next door (different internet connection). I'm having no trouble using a local copy of Sage. I updated my Java (Iced Tea). No effect. Suggestions? I'm trying to use Sage with my Precalculus class. Thanks, Brad -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] No Sage Output using Sage online
On 2/7/12 12:17 PM, Brad Burkman wrote: I'm having a new and serious problem using Sage online. When I click "evaluate," it pauses for a second and I get the green bar, but then no output. Really basic stuff like 2+3, but also plot( x, (0,1)). No output. I'm having the same trouble at the shodor server and at sagenb.org, with IE9, Firefox, and Chrome, on different computers running Windows and Ubuntu, on my school's faculty wireless, student wireless, hard-wired connection, and the wireless at the library next door (different internet connection). I'm having no trouble using a local copy of Sage. I updated my Java (Iced Tea). No effect. Suggestions? I'm trying to use Sage with my Precalculus class. I saw this too about an hour or two ago. I restarted sagenb.org and the problem went away. Have you tried in the last hour or so? Thanks, Jason -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
[sage-edu] Re: No Sage Output using Sage online
Jason, I just retried. I got sagenb.org to work. Still having trouble with Shodor, where my students have accounts, but I've emailed them. Thanks, Brad -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] No Sage Output using Sage online
On Tue, Feb 7, 2012 at 10:51 AM, Jason Grout wrote: > On 2/7/12 12:17 PM, Brad Burkman wrote: >> >> I'm having a new and serious problem using Sage online. >> >> When I click "evaluate," it pauses for a second and I get the green >> bar, but then no output. >> >> Really basic stuff like 2+3, but also plot( x, (0,1)). No output. >> >> I'm having the same trouble at the shodor server and at sagenb.org, >> with IE9, Firefox, and Chrome, on different computers running Windows >> and Ubuntu, on my school's faculty wireless, student wireless, >> hard-wired connection, and the wireless at the library next door >> (different internet connection). >> >> I'm having no trouble using a local copy of Sage. >> >> I updated my Java (Iced Tea). No effect. >> >> Suggestions? I'm trying to use Sage with my Precalculus class. > > > I saw this too about an hour or two ago. I restarted sagenb.org and the > problem went away. Have you tried in the last hour or so? This sounds like the symptom we get when there are a very large number of users, hence processes, and the system isn't allowed to start anymore (e.g., can't allocate pseudotty's). Jason -- did you do anything before the restart to check on this, e.g, "./admin --status" or "ps -u sagenbws |wc -l"? William > > Thanks, > > Jason > > > > -- > You received this message because you are subscribed to the Google Groups > "sage-edu" group. > To post to this group, send email to sage-edu@googlegroups.com. > To unsubscribe from this group, send email to > sage-edu+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-edu?hl=en. > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] No Sage Output using Sage online
On 2/7/12 1:28 PM, William Stein wrote: On Tue, Feb 7, 2012 at 10:51 AM, Jason Grout wrote: On 2/7/12 12:17 PM, Brad Burkman wrote: I'm having a new and serious problem using Sage online. When I click "evaluate," it pauses for a second and I get the green bar, but then no output. Really basic stuff like 2+3, but also plot( x, (0,1)). No output. I'm having the same trouble at the shodor server and at sagenb.org, with IE9, Firefox, and Chrome, on different computers running Windows and Ubuntu, on my school's faculty wireless, student wireless, hard-wired connection, and the wireless at the library next door (different internet connection). I'm having no trouble using a local copy of Sage. I updated my Java (Iced Tea). No effect. Suggestions? I'm trying to use Sage with my Precalculus class. I saw this too about an hour or two ago. I restarted sagenb.org and the problem went away. Have you tried in the last hour or so? This sounds like the symptom we get when there are a very large number of users, hence processes, and the system isn't allowed to start anymore (e.g., can't allocate pseudotty's). Jason -- did you do anything before the restart to check on this, e.g, "./admin --status" or "ps -u sagenbws |wc -l"? ./admin --status showed something like 372 processes for sagenb.org. I didn't do a ps. The error message posted on the other thread [1] seemed to be the cause for no output---there was an error in appending the computation to the user's history. Thanks, Jason [1] For those interested, the errors were like this: File "/sagenb/sage_install/sage-4.7.2/devel/sagenb/flask_version/worksheet.py", line 455, in worksheet_cell_update g.notebook.add_to_user_history(H, g.username) File "/sagenb/sage_install/sage-4.7.2/devel/sagenb-git/sagenb/notebook/notebook.py", line 710, in add_to_user_history history = self.user_history(username) File "/sagenb/sage_install/sage-4.7.2/devel/sagenb-git/sagenb/notebook/notebook.py", line 690, in user_historyreturn self._user_history[username] exceptions.KeyError: u'jasontest' The errors started yesterday, and there were lots of these errors. I'm not sure of the cause. -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
[sage-edu] Re: how to unshare files that have been shared with you?
On Wednesday, February 8, 2012 1:23:10 AM UTC+8, Andrey Novoseltsev wrote: > > On Feb 7, 10:00 am, Jason Grout wrote: > > > > Right now, we don't have a switch to require only OpenID logins, so we'd > > have to do that somehow. > > > > A huge plus of this is that passwords would no longer be transmitted > > insecurely, if I understand things correctly. > > > > Jason > > This would be wonderful, I don't think many users mind that someone > can look at their worksheets, but transmitting passwords insecurely is > very bad as they can be the same as for other accounts including > banking ones. Would it be possible to start new servers with OpenID > authorization out-of-the-box? > > On the other hand, will encrypted authentication and unencrypted work > have the issue of "connecting to an open session"? As outlined here: > > http://lifehacker.com/5672313/sniff-out-user-credentials-at-wi+fi-hotspots-with-firesheep > > > A somewhat related issue: can it be prohibited to see the list of > other users on the sharing screen? My university did not allow me to > create accounts for students automatically with their names as logins, > since nobody should be able to see who else is in the class and I > confessed that they might... > for our class (with local nb servers) we authenticate students using their university logins via LDAP. (this hack has not made it into the sagenb source yet, but this is doable) It strikes me as odd that this cannot be done in your and other similar cases. (unless you talk about *sagenb.org accounts, not local server nb accounts) Dima > > Thank you! > Andrey -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To view this discussion on the web visit https://groups.google.com/d/msg/sage-edu/-/Xu1mrQTdcmYJ. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] Re: how to unshare files that have been shared with you?
On 2/7/12 11:23 AM, Andrey Novoseltsev wrote: A somewhat related issue: can it be prohibited to see the list of other users on the sharing screen? My university did not allow me to create accounts for students automatically with their names as logins, since nobody should be able to see who else is in the class and I confessed that they might... This has been fixed in the new Sage notebook. For example, the list is not available on *.sagenb.org. Thanks, Jason -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] Re: how to unshare files that have been shared with you?
On 2/7/12 11:23 AM, Andrey Novoseltsev wrote: On Feb 7, 10:00 am, Jason Grout wrote: Right now, we don't have a switch to require only OpenID logins, so we'd have to do that somehow. A huge plus of this is that passwords would no longer be transmitted insecurely, if I understand things correctly. Jason This would be wonderful, I don't think many users mind that someone can look at their worksheets, but transmitting passwords insecurely is very bad as they can be the same as for other accounts including banking ones. Would it be possible to start new servers with OpenID authorization out-of-the-box? All you have to do with the new server is check a box in the notebook settings page to turn on OpenID. On the other hand, will encrypted authentication and unencrypted work have the issue of "connecting to an open session"? As outlined here: http://lifehacker.com/5672313/sniff-out-user-credentials-at-wi+fi-hotspots-with-firesheep Probably. If you want security, then use SSL on your server. Thanks, Jason -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] No Sage Output using Sage online
I have found that the public server at UW is often but unpredictably unresponsive. This is over a period of months. Usually works best from MA in the AM and gets worse as the day goes on. I have always assumed it is overloaded, and no longer use it as a computing platform. I could be wrong. Russ On 2/7/2012 1:51 PM, Jason Grout wrote: On 2/7/12 12:17 PM, Brad Burkman wrote: I'm having a new and serious problem using Sage online. When I click "evaluate," it pauses for a second and I get the green bar, but then no output. Really basic stuff like 2+3, but also plot( x, (0,1)). No output. I'm having the same trouble at the shodor server and at sagenb.org, with IE9, Firefox, and Chrome, on different computers running Windows and Ubuntu, on my school's faculty wireless, student wireless, hard-wired connection, and the wireless at the library next door (different internet connection). I'm having no trouble using a local copy of Sage. I updated my Java (Iced Tea). No effect. Suggestions? I'm trying to use Sage with my Precalculus class. I saw this too about an hour or two ago. I restarted sagenb.org and the problem went away. Have you tried in the last hour or so? Thanks, Jason -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
[sage-edu] Fwd: Programming animation
I'm just forwarding this to the edu list because it has a lot of good ideas and things people may want to discuss. It looks like you are also involved with http://mathfuture.wikispaces.com/, which has had some "official" contact with Sage in the past, though sadly we did not follow up much. Macedonian, really? Cool - Sage is used everywhere. -- Forwarded message -- From: LFS Date: Feb 7, 6:34 pm Subject: Programming animation To: sage-support Hiya Jason, It really depends and certainly I am no expert. And probably most of this is boring so feel free to ignore. As I said above, I use a combination of GeoGebra and Scratch and Sage and I am just starting with sage. I would say that MY most important use of the worksheets in SAGE has been to help ME understand the material and find an understandable way to teach it. A friend in mathfuture forum quoted somebody saying something like "If I can explain it to a computer, then I understand it". That is EXACTLY how I feel. With respect to students: Mostly classroom demonstration via an LCD projector. My rule 1: Build the applet/worksheet in class so they don't think its magic. I rarely show "ready-to-use" stuff unless I have built the basic model first. My rule 2: Make sure they understand the stuff that no computer will do for you. Then if the curriculum requires that we solve the "computer part" by hand, show them how to check it using the applet/ worksheet. Given this: The 3D Line and Surface Integrals, Vector Calculus stuff is for my son and daughter-in-law. Neither of them does the sage. They watch me do it :) He is studying chemical engineering and hates this math because he sees no use for it (and like many boys and men refuses to learn something he doesn't understand). He likes the visuals and it connects to understanding. But even my daughter-in-law (who is a very dedicated electrical engineering student) was horribly frustrated by this material. She got A's on the tests and said she didn't know what she was doing. The sage demos helped. --- I have been doing this for them for awhile. Usually, I try to make a combination of short youtube videos, worksheets with lots of graphic explanations, solvers, applets/ interactivities. Once I make them, I tend to post them online and usually get decent feedback and views (nothing like khan of course...). I try to do some in english and macedonian so there is often an odd combination of resources :) In my math undergraduate courses, I tend to just do in-class demos. (I currently teach Calc1 and Calc2, so e.g. I show them how do calculate Taylor polynomials and then draw both functions so they see if, where, how approximation works.) I tried integrating IT into the grading, but I have huge class sizes and that wasn't working. They love to look at the 3d stuff so I do show the sage stuff in class as reward for good behavior :) In my math modelling courses (smaller), I hold online classes (in macedonian) and my kids have to create a variety of (usually geogebra) worksheets and then make little videos about what they learn. It usually takes twice as long as you think it will :) In my graduate courses, I do in-class demos and then assign "similar" problems where they create worksheets themselves. (This is mostly probability and statistics to IT engineers and we use scratch.) and on and on i go Linda On Feb 7, 2:22 pm, Jason Grout wrote: > On 2/7/12 5:13 AM, LFS wrote: > > I have this dream too; I get so annoyed when mathematicians (myself > > totally included) spend time forcing our students to learn techniques > > that a computer can do, but don't spend time teaching them carefully > > and with understanding the techniques a computer cannot do. With > > respect to this, I have gotten a bit stuck trying to explain > > parameterization and so have slowed down with the sage videos. I will > > be back :) > I am really curious how you use these worksheets in your teaching. > Classroom demonstrations in a lab? Student work outside of class? > I ask because I am always looking for better ways to use computer tools > to enhance learning. > Thanks, > Jason -- You received this message because you are subscribed to the Google Groups "sage-edu" group. To post to this group, send email to sage-edu@googlegroups.com. To unsubscribe from this group, send email to sage-edu+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-edu?hl=en.
Re: [sage-edu] Fwd: Programming animation
Hiya Linda! This has become a very interesting circle. I believe the quote you're referring to is "Science is what we understand well enough to explain to a computer." - Donald Knuth Right? : ) - Michel On Tue, Feb 7, 2012 at 6:50 PM, kcrisman wrote: > I'm just forwarding this to the edu list because it has a lot of good > ideas and things people may want to discuss. It looks like you are > also involved with http://mathfuture.wikispaces.com/, which has had > some "official" contact with Sage in the past, though sadly we did not > follow up much. > > Macedonian, really? Cool - Sage is used everywhere. > > -- Forwarded message -- > From: LFS > Date: Feb 7, 6:34 pm > Subject: Programming animation > To: sage-support > > > Hiya Jason, > It really depends and certainly I am no expert. And probably most of > this is boring so feel free to ignore. > > As I said above, I use a combination of GeoGebra and Scratch and Sage > and I am just starting with sage. > I would say that MY most important use of the worksheets in SAGE has > been to help ME understand the material and find an understandable way > to teach it. A friend in mathfuture forum quoted somebody saying > something like "If I can explain it to a computer, then I understand > it". That is EXACTLY how I feel. > > With respect to students: Mostly classroom demonstration via an LCD > projector. > My rule 1: Build the applet/worksheet in class so they don't think its > magic. I rarely show "ready-to-use" stuff unless I have built the > basic model first. > My rule 2: Make sure they understand the stuff that no computer will > do for you. Then if the curriculum requires that we solve the > "computer part" by hand, show them how to check it using the applet/ > worksheet. > > Given this: > The 3D Line and Surface Integrals, Vector Calculus stuff is for my son > and daughter-in-law. Neither of them does the sage. They watch me do > it :) > He is studying chemical engineering and hates this math because he > sees no use for it (and like many boys and men refuses to learn > something he doesn't understand). He likes the visuals and it connects > to understanding. > But even my daughter-in-law (who is a very dedicated electrical > engineering student) was horribly frustrated by this material. She got > A's on the tests and said she didn't know what she was doing. The sage > demos helped. > --- > I have been doing this for them for awhile. Usually, I try to make a > combination of short youtube videos, worksheets with lots of graphic > explanations, solvers, applets/ interactivities. > Once I make them, I tend to post them online and usually get decent > feedback and views (nothing like khan of course...). I try to do some > in english and macedonian so there is often an odd combination of > resources :) > > In my math undergraduate courses, I tend to just do in-class demos. (I > currently teach Calc1 and Calc2, so e.g. I show them how do calculate > Taylor polynomials and then draw both functions so they see if, where, > how approximation works.) > I tried integrating IT into the grading, but I have huge class sizes > and that wasn't working. > They love to look at the 3d stuff so I do show the sage stuff in class > as reward for good behavior :) > > In my math modelling courses (smaller), I hold online classes (in > macedonian) and my kids have to create a variety of (usually geogebra) > worksheets and then make little videos about what they learn. It > usually takes twice as long as you think it will :) > In my graduate courses, I do in-class demos and then assign "similar" > problems where they create worksheets themselves. (This is mostly > probability and statistics to IT engineers and we use scratch.) > and on and on i go Linda > > On Feb 7, 2:22 pm, Jason Grout wrote: > > > > > > > > > On 2/7/12 5:13 AM, LFS wrote: > > > > I have this dream too; I get so annoyed when mathematicians (myself > > > totally included) spend time forcing our students to learn techniques > > > that a computer can do, but don't spend time teaching them carefully > > > and with understanding the techniques a computer cannot do. With > > > respect to this, I have gotten a bit stuck trying to explain > > > parameterization and so have slowed down with the sage videos. I will > > > be back :) > > > I am really curious how you use these worksheets in your teaching. > > Classroom demonstrations in a lab? Student work outside of class? > > > I ask because I am always looking for better ways to use computer tools > > to enhance learning. > > > Thanks, > > > Jason > > -- > You received this message because you are subscribed to the Google Groups > "sage-edu" group. > To post to this group, send email to sage-edu@googlegroups.com. > To unsubscribe from this group, send email to > sage-edu+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-edu?hl=en. > > -- == "What I ca
