Nabble - SqueakLand

Constructionist schools in San Francisco

2008-05-16T01:33:42Z

Hi,

I'm a computer scientist who'd like to see constructionism at work in
the classroom. Can anyone point me to schools, clubs or other
organizations in the San Francisco area where Etoys, Croquet or other
constructionist environments are actively being used? I'd like to
observe, if that's possible; I'm considering becoming an educator,
inspired by Seymour's and Alan's visions, and I'm curious to see how
close we are to those ideals.

thanks!
d

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attachment0 (199 bytes) Download Attachment

Problem launching eToy project

2008-05-15T18:15:33Z

Hello,

I am recently experiencing a problem launching eToy project using a Web browser.
For example, when I click on the "http://www.squeakland.org/project.jsp?http://www.squeakland.org/fun_projects/kedama/examples/ants2.pr " which is a Web link for the Ants Kedama example available at the Squeakland.org, I got a blank Web page.

Is there anyone having this problem?
Can anyone explain how to solve it.

Thanks in advance.

Young-Jin Lee

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Re: [Etoys] Another experimental version of OLPC image for non-XO environments

2008-05-14T18:48:38Z

On 5/15/08, Andreas Raab <andreas.raab@...> wrote:

> Korakurider wrote:
> > I mean that traditional squeak.exe win32 vm don't have the
> enhancement.
> > The enhancement has been commited to trunk about 4weeks ago.
> > And we can know exact version of etoys.exe only by binary compare
> > with other from known source ;-), that is problem, I think.
> >
>
> Easy: "Smalltalk getSystemAttribute: 1006" will tell you the unique build
> string for each VM. This should be enough to distinguish the VMs.
>

Yes the method could replace binary compare.
But the string returned by the vm bundled:
'Win32 built on Apr 28 2008 15:55:28 Compiler: 2.95.2 19991024 (release)'
gives almost no interestring to users other than the developer who
actually built the vm.

I tend to love to see some version number that is annouced, and
tagging in svn tree or actual small documentation describing what is
changed in the version. even declaring just renaming of the specific
version of stock win32 vm is much better than no writing.

/Korakurider

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Re: [Etoys] Another experimental version of OLPC image for non-XO environments

2008-05-14T13:14:06Z

Korakurider wrote:
> I mean that traditional squeak.exe win32 vm don't have the enhancement.
> The enhancement has been commited to trunk about 4weeks ago.
> And we can know exact version of etoys.exe only by binary compare
> with other from known source ;-), that is problem, I think.

Easy: "Smalltalk getSystemAttribute: 1006" will tell you the unique
build string for each VM. This should be enough to distinguish the VMs.

Cheers,
- Andreas

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Re: [Etoys] Another experimental version of OLPC image for non-XO environments

2008-05-14T12:11:45Z

On 5/13/08, Yoshiki Ohshima <yoshiki@...> wrote:

> > For the records, in the version of windows vm bundled, there is
> > not-yet-annouced-widely useful enhancement to trunk version.
> > (I think we want to merge them to trunk and document it at squeakvm
> > site) . That can expand some variables in
> > SecureDirectory/UserDirectory settings in etoys.ini :
> >
> > + %MYDOCUMENTS% will be expanded to actual "My Documents" directory
> > for current user.
> > + Environment variables in SecureDirectory setting can be expanded now.
> >
> > Bundled etoys.ini would be good starting point to learn the functionality.
>
> Yes. Thank you for pointing it out. I think that the latter is in
> the SVN tree on squeakvm.org, but not the former.

I mean that traditional squeak.exe win32 vm don't have the enhancement.
The enhancement has been commited to trunk about 4weeks ago.
And we can know exact version of etoys.exe only by binary compare
with other from known source ;-), that is problem, I think.

>
> > Yoshiki,
> > The version of VM bundled have a known problem :
> > %MYDOCUMENT% is expanded with backslash terminated.
> > (I think Squeak part should handle it appropriately)
> > I came to know it seems fixed in the latest stuff on svn/installers
> > when I built plugin installer by myself and test it last night. You
> > might want to check it out.
>
> These two binaries are exactly same as far as I can tell with the
> "cmp" command. Can I cause an error case in some way?

ok, I believe you :-) I can't reproduce the error on font loading,
but I saw another instance tonight (error on accessing resource map).
I am trying to make case right now.

/Korakurider

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Re: [Etoys] Another experimental version of OLPC image for non-XO environments

2008-05-13T01:24:11Z

> For the records, in the version of windows vm bundled, there is
> not-yet-annouced-widely useful enhancement to trunk version.
> (I think we want to merge them to trunk and document it at squeakvm
> site) . That can expand some variables in
> SecureDirectory/UserDirectory settings in etoys.ini :
>
> + %MYDOCUMENTS% will be expanded to actual "My Documents" directory
> for current user.
> + Environment variables in SecureDirectory setting can be expanded now.
>
> Bundled etoys.ini would be good starting point to learn the functionality.

Yes. Thank you for pointing it out. I think that the latter is in
the SVN tree on squeakvm.org, but not the former.

> Yoshiki,
> The version of VM bundled have a known problem :
> %MYDOCUMENT% is expanded with backslash terminated.
> (I think Squeak part should handle it appropriately)
> I came to know it seems fixed in the latest stuff on svn/installers
> when I built plugin installer by myself and test it last night. You
> might want to check it out.

These two binaries are exactly same as far as I can tell with the
"cmp" command. Can I cause an error case in some way?

-- Yoshiki

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Re: [Etoys] Another experimental version of OLPC image for non-XO environments

2008-05-12T22:19:57Z

On 5/13/08, Yoshiki Ohshima <yoshiki@...> wrote:

> Hello,
>
> We've been doing this on and off, but we put together another set of
> files that could be an Etoys system downloaded from squeakland.org as
> the official new version. This time, it is closer.
>
> Please download:
>
> http://tinlizzie.org/olpc/Squeakland-OLPC-080512.zip
>
> and unpack it. And, on Windows XP or Vista, nagivate to "etoys.app"
> folder and double click etoys.exe to launch it. On Macintosh, double
> click "etoys.app". On Linux, execute etoys.sh.

For the records, in the version of windows vm bundled, there is
not-yet-annouced-widely useful enhancement to trunk version.
(I think we want to merge them to trunk and document it at squeakvm
site) . That can expand some variables in
SecureDirectory/UserDirectory settings in etoys.ini :

+ %MYDOCUMENTS% will be expanded to actual "My Documents" directory
for current user.
+ Environment variables in SecureDirectory setting can be expanded now.

Bundled etoys.ini would be good starting point to learn the functionality.

Yoshiki,
The version of VM bundled have a known problem :
%MYDOCUMENT% is expanded with backslash terminated.
(I think Squeak part should handle it appropriately)
I came to know it seems fixed in the latest stuff on svn/installers
when I built plugin installer by myself and test it last night. You
might want to check it out.

Cheers,
/Korakurider

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Another experimental version of OLPC image for non-XO environments

2008-05-12T19:34:22Z

Hello,

We've been doing this on and off, but we put together another set of
files that could be an Etoys system downloaded from squeakland.org as
the official new version. This time, it is closer.

Please download:

http://tinlizzie.org/olpc/Squeakland-OLPC-080512.zip

and unpack it. And, on Windows XP or Vista, nagivate to "etoys.app"
folder and double click etoys.exe to launch it. On Macintosh, double
click "etoys.app". On Linux, execute etoys.sh.

Thank you!

-- Yoshiki

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Re: Etoys scripting broken on Mac OS X Leopard: drag and drop into script holder script?

2008-05-12T18:49:10Z

> Skip the rest of my answers if you do not care about how this
> confusion came about.

Well, now I can't skip...

> > Etoys' UI is completely independent from the platform.
>
> Ok.
> We did have those nasty problems with Universal Access interfering
> with other
> modifiers of mouse behaviors however. This was hard to track down and
> took
> a lot of time, but not related to Etoys of course.
> In that process I tested drag and drop of tiles in Etoys so many times
> (without
> wanting to actually program anything in Etoys, the children where
> doing that)
> that I was not thinking about the possibility of different types of
> tiles with different drop behaviors.
> So when I returned to the problems months later I was careless and did
> not think
> at all about different behaviors, just tested the drops and seeing
> that there was
> no drop zone and no embedding, totally ignoring the logic of the
> interface.
> And then I wrote tis post, thinking it still that same Universal
> Access problem.

Not sure what you mean by Universal Access interfere (something like
lockable Shift key?)

One could argue that a plain expression could be dropped onto a
script editor, and the user could expand it into a meaningful
statement afterwards. But current system is not flexible enough to
allow this.

-- Yoshiki

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Re: Etoys scripting broken on Mac OS X Leopard: drag and drop into script holder script?

2008-05-11T08:08:34Z

Hi Yoshiki,

On May 9, 2008, at 8:06 AM, Yoshiki Ohshima wrote:

> Merik,
>
>> Since a few months I can not create tile scripts in Etoys anymore. I
>> can drag a tile from a viewer and drop it anywhere and a new script
>> holder appears around my dropped tile. But when I drag a second tile
>> (script phrase) from the viewer and hover over the script holder no
>> insertion point appears.
>
> The second tile wasn't a variable reference, yes? If it was, the
> scriptor wouldn't take it as it is not a command or assignment.

I am ashamed to admit it was!
Skip the rest of my answers if you do not care about how this
confusion came about.

I now see there are at least three types, the commands like "turtle1's
forward by",
a assignment "turtle1's x" with a purple left-arrow in it and an
viewer/assignment like "turtle1's angleTo".

The second tile I was attempting to drop was "turtle1's angleTo" and
that still does not work,
but I now see that it is intended behavior, not broken.

> If your first tile and the second tiles are the "forward by" command
> tiles, what happens?

Than it accepts the second tile by showing the insertion point during
drag/hover and it accepts a drop.
It also accepts the assignment "turtle1's x" with a purple left-arrow
in it IF we pick it up with the arrow.
I still can not drag and drop "turtle1's angleTo" but I now think the
kids will figure that out why.

So nothing broken, the problem was confusion on my part.
Actually the children I am helping who run into the 'problem', but I
should have done my homework better before asking.

> And, when you say a new script holder, that is the one with yellow
> exclamation mark button and script name and, etc. where you edit the
> script, yes? Let us call it a script editor. (In the later version
> of OLPC Etoys, we introduced a different thing called
> ScriptingTileHolder that wraps a naked tile.)

Yes, we are both talking about a script editor.

>> When I drop the tile on top of the script holder it does not get
>> embedded but becomes a seperate tile on the background/desktop.
>> No attempt to put it into the script holder works,
>
> Unless you get the green drop zone, the script editor won't accept
> the dropped tile.

Yes, a dark green drop zone on the light green script editor background.
>
>
>> When I use the halo I can see that the script holder does excepts
>> drops.The second tile could also gets no new script holder around it,
>> no mater where I drop it,
>
> How did you check if the "script holder expects (?) drops"?

I looked in the halo menu 'accepts drops'.

>> I tried it on the Squeakland (browser plugin) (version 3.0), I
>> downloaded the XO image and also tried it on a regular squeak 3.9
>> image but nowhere do I get it to work.
>
> What do you mean by "download the XO image and also tried
> it on a regular squeak 3.9 image"? You tried it on the XO image and
> Squeak 3.9 image?

Yes, on several images.

>
>
>> I use Mac OS X Leopard on a fast G5 Quad so maybe therein lies the
>> problem?
>>
>> It took me a few months to post this because I thought it had
>> something to do with my Universel Access settings on Leopard that was
>> interfering with drag and drop elsewhere in Mac OS X like the finder.
>> But no, I have reinstalled a clean Leopard and the problem still
>> exists.
>
> Etoys' UI is completely independent from the platform.

Ok.
We did have those nasty problems with Universal Access interfering
with other
modifiers of mouse behaviors however. This was hard to track down and
took
a lot of time, but not related to Etoys of course.
In that process I tested drag and drop of tiles in Etoys so many times
(without
wanting to actually program anything in Etoys, the children where
doing that)
that I was not thinking about the possibility of different types of
tiles with different drop behaviors.
So when I returned to the problems months later I was careless and did
not think
at all about different behaviors, just tested the drops and seeing
that there was
no drop zone and no embedding, totally ignoring the logic of the
interface.
And then I wrote tis post, thinking it still that same Universal
Access problem.

>> This effectively makes Etoys (and Kedama) unusable so I think it
>> should be resolved.
>> Where to look for a solution?
>> Has anybody heard about this problem before?
>
> From your description, it is very hard to see what was actually
> going on, but I would think that there is some simpler
> misunderstanding like trying to drop a value reference onto the place
> where the script editor expects a command or an assignment.

Yes, you are right. I hope I clarified some of it.

Thank you very much on your time.

Merik

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Re: Etoys scripting broken on Mac OS X Leopard: drag and drop into script holder script?

2008-05-08T23:06:26Z

Merik,

> Since a few months I can not create tile scripts in Etoys anymore. I
> can drag a tile from a viewer and drop it anywhere and a new script
> holder appears around my dropped tile. But when I drag a second tile
> (script phrase) from the viewer and hover over the script holder no
> insertion point appears.

The second tile wasn't a variable reference, yes? If it was, the
scriptor wouldn't take it as it is not a command or assignment. If
your first tile and the second tiles are the "forward by" command
tiles, what happens?

And, when you say a new script holder, that is the one with yellow
exclamation mark button and script name and, etc. where you edit the
script, yes? Let us call it a script editor. (In the later version
of OLPC Etoys, we introduced a different thing called
ScriptingTileHolder that wraps a naked tile.)

> When I drop the tile on top of the script holder it does not get
> embedded but becomes a seperate tile on the background/desktop.
> No attempt to put it into the script holder works,

Unless you get the green drop zone, the script editor won't accept
the dropped tile.

> When I use the halo I can see that the script holder does excepts
> drops.The second tile could also gets no new script holder around it,
> no mater where I drop it,

How did you check if the "script holder expects (?) drops"?

> I tried it on the Squeakland (browser plugin) (version 3.0), I
> downloaded the XO image and also tried it on a regular squeak 3.9
> image but nowhere do I get it to work.

What do you mean by "download the XO image and also tried
it on a regular squeak 3.9 image"? You tried it on the XO image and
Squeak 3.9 image?

> I use Mac OS X Leopard on a fast G5 Quad so maybe therein lies the
> problem?
>
> It took me a few months to post this because I thought it had
> something to do with my Universel Access settings on Leopard that was
> interfering with drag and drop elsewhere in Mac OS X like the finder.
> But no, I have reinstalled a clean Leopard and the problem still exists.

Etoys' UI is completely independent from the platform.

> This effectively makes Etoys (and Kedama) unusable so I think it
> should be resolved.
> Where to look for a solution?
> Has anybody heard about this problem before?

From your description, it is very hard to see what was actually
going on, but I would think that there is some simpler
misunderstanding like trying to drop a value reference onto the place
where the script editor expects a command or an assignment.

You don't have to try different images or such. In whatever image,
please explain us what you exactly did.

-- Yoshiki

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Etoys scripting broken on Mac OS X Leopard: drag and drop into script holder script?

2008-05-08T01:35:14Z

Since a few months I can not create tile scripts in Etoys anymore. I
can drag a tile from a viewer and drop it anywhere and a new script
holder appears around my dropped tile. But when I drag a second tile
(script phrase) from the viewer and hover over the script holder no
insertion point appears.
When I drop the tile on top of the script holder it does not get
embedded but becomes a seperate tile on the background/desktop.
No attempt to put it into the script holder works,

When I use the halo I can see that the script holder does excepts
drops.The second tile could also gets no new script holder around it,
no mater where I drop it,

I tried it on the Squeakland (browser plugin) (version 3.0), I
downloaded the XO image and also tried it on a regular squeak 3.9
image but nowhere do I get it to work.

I use Mac OS X Leopard on a fast G5 Quad so maybe therein lies the
problem?

It took me a few months to post this because I thought it had
something to do with my Universel Access settings on Leopard that was
interfering with drag and drop elsewhere in Mac OS X like the finder.
But no, I have reinstalled a clean Leopard and the problem still exists.

This effectively makes Etoys (and Kedama) unusable so I think it
should be resolved.
Where to look for a solution?
Has anybody heard about this problem before?

Merik

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Re: How to remove a language item from menu Squeakland

2008-05-07T17:24:39Z

Luis,

> I'm using the latest Squeak 3.9 and got a duplicate language item from menu (Configuration > set language). I loaded a
> .translation file for Portuguese and after that I made some corrections directly using the squeak language editor.
> Then I saved the file and loaded it again, later. Now, I have two new items in the "set language" menu, both Portuguese.
> I want to remove one of them but I don't know how to do.

For doing Etoys, I recommend to use the squeakland version or the
OLPC version. And, it is a bit hard to say, but questions in regards
to Squeak 3.9, 3.10, and 3.11 etc. should be sent to the squeak-dev
list.

-- Yoshiki

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How to remove a language item from menu Squeakland

2008-05-06T05:58:28Z

I'm using the latest Squeak 3.9 and got a duplicate language item from menu (Configuration > set language). I loaded a .translation file for Portuguese and after that I made some corrections directly using the squeak language editor.
Then I saved the file and loaded it again, later. Now, I have two new items in the "set language" menu, both Portuguese. I want to remove one of them but I don't know how to do.
Some help will be great.
Thanks,

Luis

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Some thought about Operational thinking and Squeak

2008-05-04T00:55:38Z

http://blog.ofset.org/hilaire/index.php?post/2008/05/01/Operational-thinking

Hilaire

--
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Linking projects

2008-05-03T01:48:28Z

Hi,

Is there a way to link projects together? Or to make a link to a
project from within another project. Kinda like hyperlinks in web
pages?

Thx a lot

palexa
--
Paula Alexandra Silva
http://www.comp.lancs.ac.uk/~palexa/
http://dme.uma.pt/pt/people/faculty/Paula.Alexandra.Silva.html

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Packaging Etoys for other platforms

2008-05-01T20:41:01Z

Hello,

We've been delaying the action a bit, but we have been making the
Etoys distribution for non-XO Linux, Mac, and Windows. Now our team
got some traction and trying to package it up sometime soon. The
package will be based on the latest OLPC Etoys image, but with some
different settings and preferences, basically. (We'll soon make an
early access versions.) The version that will be distributed from the
Squeakland web site will be this version; so that the Etoys users on
XO and Etoys users on other platforms can send compatible projects.

We would like to include good translations in the package that makes
sense to do so.

Some languages require additional fonts, or different settings. For
these languages, the community should consider to make a re-packaged
version with some modifications. (The Japanese community, for
example, has been doing this successfuly for several years.)

At the same time, for languages like German, the community has been
doing great to keep up with the translation effort. (Even with
unfortunate glitches!) And it doesn't need too different settings
from English one, it is a good candidate to include.

For the non-XO environments, these are typically at schools and they
often cannot easily update files once installed. So, we decided to
make a package that is intended not to be updated often.

... So, if you like to get your language translations included in
the package for non-XO environments, please try to update the
translations in "a few weeks". (This is what VPRI does so may not be
able to deliver on time as promised, but we are trying.)

Thank you!

-- Yoshiki

(Later on, we might work on some incremental updater but not this
time.)

For the OLPC XO, we are planning to revise the image and
translations and release new versions relatively frequently. There
will be deadlines like Update.2, so we try to provide better versions
for them. That includes new translations.

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Re: Squeakers Film Link on Squeakland.org wrong

2008-04-30T07:22:55Z

Hi, Brad -

We gave up the "squeakersfilm.org" domain earlier this year, but we
should make it so that no page on the squeakland website links there,
so thank for pointing that out.

The content regarding the "Squeakers" film can still be found on the
site through the "Squeak Media" section and by clicking on the DVD in
that section which takes you here:

http://www.squeakland.org/sqfilm/public_html/index.html

cheers,
Kim

On Apr 29, 2008, at 5:34 PM, Brad Fuller wrote:

> Thought I'd pass this along: The "Squeakers" link on this page:
> http://www.squeakland.org/school/schoolmain.html
> points to:
> http://www.squeakersfilm.org/
>
> Which seems to be run by a domain squatter.
>
>
>
>
> _______________________________________________
> Squeakland mailing list
> Squeakland@...
> http://squeakland.org/mailman/listinfo/squeakland

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Squeakers Film Link on Squeakland.org wrong

2008-04-29T17:34:45Z

Thought I'd pass this along: The "Squeakers" link on this page:
http://www.squeakland.org/school/schoolmain.html
points to:
http://www.squeakersfilm.org/

Which seems to be run by a domain squatter.

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Re: Part II of my advocating article about Squeak/Smalltalk programing for education

2008-04-26T16:46:53Z

this is a fabulous article! thanks!

Hilaire Fernandes wrote:

> In this series of articles, I will highlight the advantages of using
> Squeak/Smalltalk to develop educational software. At some point and
> based on my experience, I will compare with other development
> languages. The focus of this article is for educators and developers
> interested in software programming education applications. In these
> articles, don't expect to learn about Smalltalk/Squeak programming, my
> goal is simply to give an overall picture, based on real experience.
> Feedback is of course very welcome.
>
> In this article I will discuss about the Smalltalk image concept and
> its consequences.
>
> http://blog.ofset.org/hilaire/index.php?post/2008/04/24/Why-you-could-consider-Smalltalk/Squeak-as-your-preferred-development-plateform-for-your-next-educational-software-Part-II
>
>

--
Mark Polishook, D.M.A.
Technology Coordinator
Morehead Hall, Rm 132
Center for Academic Advising and Adult Learning
Montclair State University
Montclair, NJ 07043

(973)-655-7114
http://www.montclair.edu/AcademicAdvising/html
polishookm@...

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Part II of my advocating article about Squeak/Smalltalk programing for education

2008-04-25T00:40:59Z

In this series of articles, I will highlight the advantages of using
Squeak/Smalltalk to develop educational software. At some point and
based on my experience, I will compare with other development
languages. The focus of this article is for educators and developers
interested in software programming education applications. In these
articles, don't expect to learn about Smalltalk/Squeak programming, my
goal is simply to give an overall picture, based on real experience.
Feedback is of course very welcome.

In this article I will discuss about the Smalltalk image concept and
its consequences.

http://blog.ofset.org/hilaire/index.php?post/2008/04/24/Why-you-could-consider-Smalltalk/Squeak-as-your-preferred-development-plateform-for-your-next-educational-software-Part-II

--
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Re: Squeak activity about angle

2008-04-23T15:54:14Z

Better with the URL of the activity:
http://swiki.ofset.org:8000/super/338

2008/4/24 Hilaire Fernandes <hilaire@...>:

> A simple pedagogical activity about angle for primary school.
> You need to have DrGeoII installed in your Squeakland, so you can open
> the project from your browser. Alternatively you can use DrGeoII
> packaged for your OS:
> http://wiki.laptop.org/go/DrGeo#I_don.27t_have_an_XO.2C_can_I_use_Dr._Geo_II.3F
> Then you drag and drop the activity project file into it.
> Does it sound clear?
>
> Hilaire
>
> --
> http://blog.ofset.org/hilaire
>

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Squeak activity about angle

2008-04-23T15:53:07Z

A simple pedagogical activity about angle for primary school.
You need to have DrGeoII installed in your Squeakland, so you can open
the project from your browser. Alternatively you can use DrGeoII
packaged for your OS:
http://wiki.laptop.org/go/DrGeo#I_don.27t_have_an_XO.2C_can_I_use_Dr._Geo_II.3F
Then you drag and drop the activity project file into it.
Does it sound clear?

Hilaire

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RE : Re: Unscalable picture Re: [Etoys] Squeak activityabout Measure

2008-04-22T18:18:26Z

Hi,

for etoy users, the easiest way to make objects unscalable is to go to geometry category and make a script with
the tiles length an the tile width and set this script ticking.

Asking how to get two raw of the same length using always the same animal in a raw, will help discovering GCD:

Regards

-------- Message d'origine--------
De: squeakland-bounces@... de la part de Hilaire Fernandes
Date: mar. 22/04/2008 17:30
À: karl
Cc: squeakland.org mailing list; etoys
Objet : [Squeakland] Re: Unscalable picture Re: [Etoys] Squeak activityabout Measure

2008/4/22, karl <karl.ramberg@...>:

> Inspect the SketchMorph and do it:
> ImageMorph new image: originalForm;openInWorld
>
> Or file in this change set that adds a menu item that toggles SketchMorphs
> scalability.

The one from your .cs is even greater so that kids can still redraw on
the sticker to construct sub-unit (as shown in my .pr file).

Although this example is simple like stupid, it really shows the
pedagogical effectiveness of Squeak. Indeed all the step necessary to
prepare the .pr file (importing the sticker from a scan, cutting the
sticker, preparing a stickers distributor, writing the text, saving
the projet, distributing it to the learner) is in the scope of a
teacher even with low ICT experience.

And at the end, it is still a nice activity going into knowledge construction.

I will propose later some more with a mix of DrGeo and usual squeak
manipulation (some as bad example and other as good example)

Hilaire

>
>
> Karl
>
> > Hilaire
> >
> > 2008/4/22, karl <karl.ramberg@...>:
> >
> >
> > > Hilaire Fernandes wrote:
> > >
> > >
> > >
> > > > A simple pedagogical activity about measure for primary school
> students.
> > > > http://swiki.ofset.org:8000/super/337
> > > > You need to install Squeakland:
> > > > http://www.squeakland.org/
> > > >
> > > > Eventually I would like to be able to lock the resize of the sticker.
> > > >
> > > >
> > > > Hilaire
> > > >
> > > >
> > > >
> > > >
> > > >
> > > My French is really horrible but I recognize animal names :-)
> > > If you use ImageMorphs they will not resize.
> > >
> > > Karl
> > >
> > >
> > >
> >
> >
> >
> >
>
>
> 'From etoys3.0 of 24 February 2008 [latest update: #1985] on 22 April 2008
> at 4:47:36 pm'!
> "Change Set: UnscalableSketch
> Date: 22 April 2008
> Author: Karl Ramberg
>
> Adds a menu item to toggle scalability if a picture"!
>
> Morph subclass: #SketchMorph
> instanceVariableNames: 'originalForm rotationStyle scalePoint
> framesToDwell rotatedForm unscalable '
> classVariableNames: ''
> poolDictionaries: ''
> category: 'Morphic-Basic'!
>
> !SketchMorph methodsFor: 'geometry' stamp: '<no author> 4/22/2008 16:21'!
> extent: newExtent
> "Change my scale to fit myself into the given extent.
> Avoid extents where X or Y is zero."
> unscalable ifNotNil:[ unscalable ifTrue:[^self]].
> (newExtent y = 0 or: [ newExtent x = 0 ]) ifTrue: [ ^self ].
> self extent = newExtent ifTrue:[^self].
> scalePoint _ newExtent asFloatPoint / (originalForm extent max:
> 1@1).
> self layoutChanged.
> ! !
>
> !SketchMorph methodsFor: 'menu' stamp: 'kfr 4/22/2008 16:36'!
> toggleUnscalable
> ^self unscalable: (self unscalable not)! !
>
> !SketchMorph methodsFor: 'menu' stamp: 'kfr 4/22/2008 16:30'!
> unscalable
> unscalable ifNil:[unscalable _ false].
> ^unscalable! !
>
> !SketchMorph methodsFor: 'menu' stamp: 'kfr 4/22/2008 16:42'!
> unscalableString
> ^ (self unscalable
> ifTrue: ['<yes>']
> ifFalse: ['<no>'])
> , 'unscalable image' translated! !
>
> !SketchMorph methodsFor: 'menu' stamp: 'kfr 4/22/2008 16:29'!
> unscalable: aBoolean
> unscalable _ aBoolean! !
>
> !SketchMorph methodsFor: 'menus' stamp: 'kfr 4/22/2008 16:43'!
> addToggleItemsToHaloMenu: aCustomMenu
> "Add toggle-items to the halo menu"
>
> super addToggleItemsToHaloMenu: aCustomMenu.
> aCustomMenu addUpdating: #unscalableString target: self action:
> #toggleUnscalable.
> (Smalltalk includesKey: #B3DRenderEngine) ifTrue: [
> aCustomMenu addUpdating: #useInterpolationString target:
> self action: #toggleInterpolation.
> ].
> ! !
>
> SketchMorph removeSelector: #unscaleable!
> Morph subclass: #SketchMorph
> instanceVariableNames: 'originalForm rotationStyle scalePoint
> framesToDwell rotatedForm unscalable'
> classVariableNames: ''
> poolDictionaries: ''
> category: 'Morphic-Basic'!
>
>
>

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Re: re: Error loading project with plugin.

2008-04-22T17:52:43Z

On Apr 22, 2008, at 4:08 PM, Jerome Peace wrote:

> [Squeakland] Error loading project with plugin.
> or what do you do with MorphicExtentionPlus when the class isn't
> there?
>
> Hi Scott, (Hi Yoandy)
>
> I ran into this problem with the olpc image.
>
> On a lucky guess I answered the question about which "modern" class
> to use to replace "MorphicExtentionPlus"
> with "MorphicExtention" (the old class).
> This, to my surprise, worked.
> So I took a closer look and saw that so far the ..Plus extentions
> purpose
> was to optimize layout time by making ivars out of properties in the
> otherProperties dictionary.
> By using the old extention the optimization is lost but nothing is
> really broken.
>
> Maybe someone can formalize this workaround?

While it's true that some projects created in olpc-based images can
indeed be successfully loaded into an old Squeakland plug-image using
the workaround Jerome discovered, most projects will encounter
numerous other roadblocks of a similar nature, none of them as simply
worked around as in the MorphExtensionPlus case. Every object present
in the project which belongs to a class added or changed during the
past year and a half of intensive development of the etoys system on
the olpc will cause difficulties when you try to load it into the
older image.

-- Scott

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re: Error loading project with plugin.

2008-04-22T16:08:58Z

[Squeakland] Error loading project with plugin.
or what do you do with MorphicExtentionPlus when the class isn't there?

Hi Scott, (Hi Yoandy)

I ran into this problem with the olpc image.

On a lucky guess I answered the question about which "modern" class to use to replace "MorphicExtentionPlus"
with "MorphicExtention" (the old class).
This, to my surprise, worked.
So I took a closer look and saw that so far the ..Plus extentions purpose
was to optimize layout time by making ivars out of properties in the otherProperties dictionary.
By using the old extention the optimization is lost but nothing is really broken.

Maybe someone can formalize this workaround?

Yours in curiosity and service, --Jerome Peace

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Re: Unscalable picture Re: [Etoys] Squeak activity about Measure

2008-04-22T09:43:16Z

Hilaire Fernandes wrote:

> 2008/4/22, karl <karl.ramberg@...>:
>
>
>> Inspect the SketchMorph and do it:
>> ImageMorph new image: originalForm;openInWorld
>>
>> Or file in this change set that adds a menu item that toggles SketchMorphs
>> scalability.
>>
>
> The one from your .cs is even greater so that kids can still redraw on
> the sticker to construct sub-unit (as shown in my .pr file).
>

Yes, it is nice to hide ImageMorphs away from Etoys, as they just
confuse (walking like a duck but not talking like a duck )

> Although this example is simple like stupid, it really shows the
> pedagogical effectiveness of Squeak. Indeed all the step necessary to
> prepare the .pr file (importing the sticker from a scan, cutting the
> sticker, preparing a stickers distributor, writing the text, saving
> the projet, distributing it to the learner) is in the scope of a
> teacher even with low ICT experience.
>
>

There are lots of nice projects possible that are quite simple to set
up. But there is also some functionality missing that make it very hard
to do stuff that is simple if you know Squeak. But it's also a constant
struggle not to add too many features that just confuse and clutter up.

> And at the end, it is still a nice activity going into knowledge construction.
>
> I will propose later some more with a mix of DrGeo and usual squeak
> manipulation (some as bad example and other as good example)
>

I'm looking forward to these projects.

Karl

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Re: Unscalable picture Re: [Etoys] Squeak activity about Measure

2008-04-22T08:30:29Z

2008/4/22, karl <karl.ramberg@...>:

> Inspect the SketchMorph and do it:
> ImageMorph new image: originalForm;openInWorld
>
> Or file in this change set that adds a menu item that toggles SketchMorphs
> scalability.

The one from your .cs is even greater so that kids can still redraw on
the sticker to construct sub-unit (as shown in my .pr file).

Although this example is simple like stupid, it really shows the
pedagogical effectiveness of Squeak. Indeed all the step necessary to
prepare the .pr file (importing the sticker from a scan, cutting the
sticker, preparing a stickers distributor, writing the text, saving
the projet, distributing it to the learner) is in the scope of a
teacher even with low ICT experience.

And at the end, it is still a nice activity going into knowledge construction.

I will propose later some more with a mix of DrGeo and usual squeak
manipulation (some as bad example and other as good example)

Hilaire

--
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Unscalable picture Re: [Etoys] Squeak activity about Measure

2008-04-22T07:54:44Z

Hilaire Fernandes wrote:
> How do you turn image dropped in the image as ImageMorph?
>

Inspect the SketchMorph and do it:
ImageMorph new image: originalForm;openInWorld

Or file in this change set that adds a menu item that toggles
SketchMorphs scalability.

Karl

> Hilaire
>
> 2008/4/22, karl <karl.ramberg@...>:
>
>> Hilaire Fernandes wrote:
>>
>>
>>> A simple pedagogical activity about measure for primary school students.
>>> http://swiki.ofset.org:8000/super/337
>>> You need to install Squeakland:
>>> http://www.squeakland.org/
>>>
>>> Eventually I would like to be able to lock the resize of the sticker.
>>>
>>>
>>> Hilaire
>>>
>>>
>>>
>>>
>> My French is really horrible but I recognize animal names :-)
>> If you use ImageMorphs they will not resize.
>>
>> Karl
>>
>>
>
>
>

'From etoys3.0 of 24 February 2008 [latest update: #1985] on 22 April 2008 at 4:47:36 pm'!
"Change Set: UnscalableSketch
Date: 22 April 2008
Author: Karl Ramberg

Adds a menu item to toggle scalability if a picture"!

Morph subclass: #SketchMorph
instanceVariableNames: 'originalForm rotationStyle scalePoint framesToDwell rotatedForm unscalable '
classVariableNames: ''
poolDictionaries: ''
category: 'Morphic-Basic'!

!SketchMorph methodsFor: 'geometry' stamp: '<no author> 4/22/2008 16:21'!
extent: newExtent
"Change my scale to fit myself into the given extent.
Avoid extents where X or Y is zero."
unscalable ifNotNil:[ unscalable ifTrue:[^self]].
(newExtent y = 0 or: [ newExtent x = 0 ]) ifTrue: [ ^self ].
self extent = newExtent ifTrue:[^self].
scalePoint _ newExtent asFloatPoint / (originalForm extent max: 1@1).
self layoutChanged.
! !

!SketchMorph methodsFor: 'menu' stamp: 'kfr 4/22/2008 16:36'!
toggleUnscalable
^self unscalable: (self unscalable not)! !

!SketchMorph methodsFor: 'menu' stamp: 'kfr 4/22/2008 16:30'!
unscalable
unscalable ifNil:[unscalable _ false].
^unscalable! !

!SketchMorph methodsFor: 'menu' stamp: 'kfr 4/22/2008 16:42'!
unscalableString
^ (self unscalable
ifTrue: ['<yes>']
ifFalse: ['<no>'])
, 'unscalable image' translated! !

!SketchMorph methodsFor: 'menu' stamp: 'kfr 4/22/2008 16:29'!
unscalable: aBoolean
unscalable _ aBoolean! !

!SketchMorph methodsFor: 'menus' stamp: 'kfr 4/22/2008 16:43'!
addToggleItemsToHaloMenu: aCustomMenu
"Add toggle-items to the halo menu"

super addToggleItemsToHaloMenu: aCustomMenu.
aCustomMenu addUpdating: #unscalableString target: self action: #toggleUnscalable.
(Smalltalk includesKey: #B3DRenderEngine) ifTrue: [
aCustomMenu addUpdating: #useInterpolationString target: self action: #toggleInterpolation.
].
! !

SketchMorph removeSelector: #unscaleable!
Morph subclass: #SketchMorph
instanceVariableNames: 'originalForm rotationStyle scalePoint framesToDwell rotatedForm unscalable'
classVariableNames: ''
poolDictionaries: ''
category: 'Morphic-Basic'!

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Squeak activity about Measure

2008-04-22T05:32:18Z

A simple pedagogical activity about measure for primary school students.
http://swiki.ofset.org:8000/super/337
You need to install Squeakland:
http://www.squeakland.org/

Eventually I would like to be able to lock the resize of the sticker.

Hilaire

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Re: Error loading project with plugin.

2008-04-21T20:34:30Z

On Apr 21, 2008, at 7:54 PM, Yoandy Rodriguez Martinez wrote:

> Where can I find an squeak plugin compatible image then??? Isn't
> there a
> workaround to that subject??

If you want to assure compatibility with the old squeakland plug-in,
you need to develop your projects using the old squeakland plug-in
image itself, or else using the "development" version of of the
squeakland plug-in, which can also be obtained from Squeakland.org;

http://www.squeakland.org/installers/SqueakPluginImage-dev.zip

Note that projects created with the old squeakland plug-in or dev
image are *forward*-compatible, i.e. such projects can be brought
forward and loaded into a current etoys3.0 image. It's the opposite
direction that doesn't work.

Alternatively, you can continue to develop your projects using a
current olpc/etoys3.0 image, knowing that a new plug-in version of
etoys3.0 is going to be released very soon. Looking toward the
future, that would likely be the wisest choice.

Cheers,

-- Scott

----------------------------------------

> -----Original Message-----
> From: Scott Wallace [mailto:scott.wallace@...]
> Sent: Monday, April 21, 2008 10:11 PM
> To: Yoandy Rodriguez Martinez
> Cc: SqueakLand
> Subject: Re: [Squeakland] Error loading project with plugin.
>
> On Apr 21, 2008, at 6:56 PM, Yoandy Rodriguez Martinez wrote:
>> Hello:
>> First of all thanks to Scott and all who answered my previous post,
>> Scott you were right, I wasn't including the class in the project
>> change set. I solved it by using the dual change sorter as you said
>> but now when I publish the project the plugin image complains about
>> not knowing MorphExtensionPlus, the thing is that class is supposed
>> to be in the plugin version I'm using.
>> Any advice will be appreciated.
>> Thanks in advance.
>>
>> PD.
>> And again sorry for my English.
>
>
> Hello again, Yoandy.
>
> Yes, unfortunately the old Squeakland plug-in image is incompatible
> with projects created using the "olpc" image. If you have projects
> created with the olpc etoys system, they can for the time being only
> be read in successfully into etoys3.0-series images.
>
> A new Squeakland image will be released quite soon which will replace
> the old one; it will be based on the etoys3.o image, and it *will* be
> fully compatible with projects created on or for the olpc.
>
> Cheers,
>
> -- Scott

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RE: Error loading project with plugin.

2008-04-21T19:54:54Z

Where can I find an squeak plugin compatible image then??? Isn't there a
workaround to that subject??

-----Original Message-----
From: Scott Wallace [mailto:scott.wallace@...]
Sent: Monday, April 21, 2008 10:11 PM
To: Yoandy Rodriguez Martinez
Cc: SqueakLand
Subject: Re: [Squeakland] Error loading project with plugin.

On Apr 21, 2008, at 6:56 PM, Yoandy Rodriguez Martinez wrote:

> Hello:
> First of all thanks to Scott and all who answered my previous post,
> Scott you were right, I wasn't including the class in the project
> change set. I solved it by using the dual change sorter as you said
> but now when I publish the project the plugin image complains about
> not knowing MorphExtensionPlus, the thing is that class is supposed
> to be in the plugin version I'm using.
> Any advice will be appreciated.
> Thanks in advance.
>
> PD.
> And again sorry for my English.

Hello again, Yoandy.

Yes, unfortunately the old Squeakland plug-in image is incompatible
with projects created using the "olpc" image. If you have projects
created with the olpc etoys system, they can for the time being only
be read in successfully into etoys3.0-series images.

A new Squeakland image will be released quite soon which will replace
the old one; it will be based on the etoys3.o image, and it *will* be
fully compatible with projects created on or for the olpc.

Cheers,

-- Scott

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Re: Error loading project with plugin.

2008-04-21T19:11:17Z

On Apr 21, 2008, at 6:56 PM, Yoandy Rodriguez Martinez wrote:

> Hello:
> First of all thanks to Scott and all who answered my previous post,
> Scott you were right, I wasn’t including the class in the project
> change set. I solved it by using the dual change sorter as you said
> but now when I publish the project the plugin image complains about
> not knowing MorphExtensionPlus, the thing is that class is supposed
> to be in the plugin version I’m using.
> Any advice will be appreciated.
> Thanks in advance.
>
> PD.
> And again sorry for my English.

Error loading project with plugin.

2008-04-21T18:56:37Z

Hello:

First of all thanks to Scott and all who answered my previous post, Scott you were right, I wasn’t including the class in the project change set. I solved it by using the dual change sorter as you said but now when I publish the project the plugin image complains about not knowing MorphExtensionPlus, the thing is that class is supposed to be in the plugin version I’m using.

Any advice will be appreciated.

Thanks in advance.

PD.

And again sorry for my English.

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Re: how to include a new class into a project

2008-04-18T22:56:23Z

On Apr 18, 2008, at 10:48 AM, Yoandy Rodriguez Martinez wrote:
> Hello:
> I’m working in a project about using Squeak to teach physics in
> College. I’ve made some new Morphs and created a new
> morphic project who contains them. After saving the project and
> publishing it into the Web, the plugin image does not recognizes
> the new classes I’ve included. Have I done anything wrong or it is
> supposed to be like that?

Hello, Yoandy,

You want to have the code defining your new classes bundled into the
project file; for this to happen, you need to have all the new code be
in the project's change-set.

If, at project-publishing time, the project's change-set has any code
in it, then there will be a prompt asking if you want those changes to
go out onto the project file; in your case you would answer yes.

If the code defining your new classes, etc., is not already in the
change-set of the project you are publishing, you can move it there
using "copy" commands in a "dual change sorter" before publishing the
project.

(I can give you a little more clarification and guidance offline about
change-sets and change-sorters if you need it, though since you're
writing your own Morph subclasses in Squeak, probably you're familiar
with the basic development tools and notions.)

Cheers,

-- Scott
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