[squeakland] Fraction Cutter - Amazing what you can do with a few scripting tiles

[Steve Thomas]

Some wonderful quotes from the video:
"We have been trained to care about notation way too much"
"Math is NOT marks on a page. The mathematics is in what those marks
represent".

Stephen

On Thu, Jun 23, 2011 at 2:05 PM, karl ramberg <karlramberg at gmail.com> wrote:

>
>
> On Wed, Jun 22, 2011 at 6:26 AM, Steve Thomas <sthomas1 at gosargon.com>wrote:
>
>> In working on my Fraction A Day<http://mrstevesscience.blogspot.com/search/label/Fraction%20A%20Day> project
>> I built a "Fraction Cutter<http://www.squeakland.org/showcase/project.jsp?id=11020>
>> "
>>
>> I was able to build this with just 11 scripting tiles in Etoys (could have
>> got it down to 7, but went for readability).  The first page lets you make
>> only 1 cut, the second lets you make multiple cuts. I had to put a playfield
>> on top of the "unit" (aka rectangle, which is in a gridded playfield) so
>> that I could allow you to "clear the cuts" by simply using the Playfields
>> "remove all" tile from the collections category, without removing my unit
>> and having to put it back each time.
>>
>> Next I am thinking about using polygons as my "units" so I can visually
>> show the cut by duplicating the polygon and modifying the vertices to points
>> where they intersect the cut. Then I will "animate the cut" by moving the
>> polygon's apart. This should scale to multiple cuts without code changes
>> (using the Playfield's "tell all contents" tile from the scripting
>> category). Well at least I think it should testing and the mandatory
>> debugging that occurs anytime I write code will tell ;)
>>
>> Here is a Etoys Minute showing it in action.
>>
>> The other amazing thing is that this Etoys Minute is actually less than a
>> minute ;)
>>
>> Stephen
>>
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>>
>> I also thought of your project when I saw this video on Boingboing today:
> http://www.youtube.com/watch?v=a-e8fzqv3CE&feature=player_embedded
>
> Karl
>
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