# [IAEP] [squeakland] Expresándonos con Etoys / Expressing ourselves with Etoy s

mokurai at earthtreasury.org mokurai at earthtreasury.org
Fri Jul 1 01:49:44 EDT 2011

```Aha! Carlos, you do understand Sugar, much better than those who merely
know how to operate it. This visual learning method, without formulas,
words, and calculations, is what I have been proposing for some time, and
now have started implementing, along with Tony Forster, Peter Hewitt, Alan
Kay, and others. We must talk about kindergarten calculus, about
symmetries, about all sorts of things.

You know how to make a curve that is not a circle, but that rolls on a
flat plane with its top at a constant height, don't you? This has
commercial applications. There are many other such examples that can be
demonstrated in one or another of the Sugar tools.

This kind of thinking (square wheels on an undulating road) has many
important applications in manufacturing. For example, sharp-edged
semiconductor masks produce fuzzy diffracted edges on the IC, but just the
right fuzziness in the mask edges produces sharp, thin lines on the IC.
For another, if you grind two glass blanks together with the appropriate
grit in between, and with frequent random rotations, you produce two
spherical surfaces, one slightly convex and one slightly concave. But if
you grind three surfaces together two at a time, with frequent changes
through all three pairings, they all necessarily come out flat.

On Thu, June 30, 2011 8:22 am, Carlos Rabassa wrote:
> English text follows Spanish text
>
> Karl,
>
> gracias por tu comentario alentador.
>
> Trataré de mejorar el video, este fue mi primer intento,  creo puedo hacer
> algo mejor.
>
> Durante mucho tiempo insistí en contar a todos sobre la vitrina de
> Squeakland,  donde cualquiera puede encontrar proyectos hechos por otros,
> abrir los guiones y ver cómo fueron hechos.
>
> Pero luego,  hablando con usuarios en el terreno, encontré que pedir a
> usuarios potenciales que hagan todo eso,  es demasiado y muy complicado.
>
> Por eso pensé que el video con los guiones abiertos,  accesible con un
> clic en el enlace a YouTube, podría ser una manera mejor de promover el
> uso de Etoys.
>
> Pensé que comenzar por mostrar el premio,  mostrar lo que puede lograrse,
> podría dar a los usuarios potenciales el entusiasmo necesario para tomar
> los pequeños pasos para crear proyectos con Etoys.
>
> Dejé dos guiones simples,  sin agregar botones ni los lujos que traté de
> agregar en el pasado.  No dejan ver con claridad la simplicidad de este
> medio de expresión.
>
> El mensaje es:
>
> Es muy fácil crear guiones sencillos para describir ideas complejas como
>
> Imaginemos por un momento explicar esto mismo con palabras.
>
> Favor notar que el proyecto no usa variables ni fórmulas ni nada que
> alguien pudiese considerar temas avanzados.
>
> Puedes encontrar este proyecto y muchísimos otros en la vitrina en:
>
> www.Squeakland.org
>
> Los videos en YouTube a los que ofrezco enlaces,  proveen el vínculo con
> el mundo real.
>
> Oí a algunos de los más grandes maestros resaltar la importancia de
> establecer esta conexión.
>
>
> English text starts here
>
> Karl,
>
> thanks for your encouraging comment.
>
> Will try to improve the movie,  this was my first try,  believe I can do
> better.
>
> I have been insisting for a long time in telling everyone about the
> Squeakland showcase where anyone may find projects done by others,  open
> the scripts and find out how were they done.
>
> But then,  by talking to users in the field,  I found asking for potential
> users to do all that might be too much and too complicated.
>
> This is why we thought a movie with the open scripts,  accessible by one
> click on the YouTube link,  might be a better way to promote the use of
> Etoys.
>
> I thought showing the reward first,  showing what can be achieved,  might
> give prospective users the enthusiasm needed to take the short and easy
> steps to create Etoys projects.
>
> I left the two plain scripts without adding buttons or any of the luxuries
> I tried to add in the past.  They cloud the simplicity of this means of
> expression.
>
> The message is:
>
> Creating a script to describe a complex idea like the square wheel on the
> undulated road,  is very simple and easy.
>
> Imagine for a moment explaining the same idea with words.
>
> Please note,  the project doesn´t use variables or formulas or anything
> that someone might consider to be advanced subjects.
>
> You may find this project and many others in the showcase at:
>
> www.Squeakland.org
>
> The YouTube videos,  for which we offer links,  provide the connection to
> the real world.   I heard some of the greatest teachers insist about its
> importance of establishing this relationship.
>
>
> Carlos Rabassa
> Volunteer
> Plan Ceibal Support Network
> Montevideo, Uruguay
>
>
>
> On Jun 30, 2011, at 8:11 AM, karl ramberg wrote:
>
>> Really cool :-)
>>
>> Karl
>>
>> On Wed, Jun 29, 2011 at 11:51 PM, Carlos Rabassa <carnen at mac.com> wrote:
>> English text follows Spanish text
>>
>> Hace unos pocos días leímos sobre vehículos con ruedas cuadradas.
>>
>> Funcionan suavemente sin inclinarse.
>>
>> Usamos Etoys para entender y explicar como funcionan estas ruedas
>>
>> El secreto está en hacerlas rodar sobre caminos ondulados.
>>
>> Este proyecto Etoys muestra cómo construir un camino ondulado adecuado,
>> agregando material,  que se muestra en púrpura,  sobre la superficie
>> lisa del camino original:
>>
>>
>> El video también muestra los únicos guiones requeridos para hacer que la
>> rueda cuadrada ruede sobre el camino mientras que el vehículo,
>> representado por la línea verde, se mantiene horizontal y a altura
>> constante.
>>
>> Estos son algunos vehículos con ruedas cuadradas:
>>
>> Auto de 4 ruedas
>>
>> Bicicleta de 2 ruedas
>>
>> Triciclo con 3 ruedas de tamaños diferentes
>>
>> English text starts here
>>
>> A few days ago we read about square-wheeled vehicles.
>>
>> They offer smooth rides,  without tilting.
>>
>> We used Etoys to understand and explain how this square wheels work.
>>
>> The secret is to roll them on undulated roads.
>>
>> This Etoys project shows how to build a road with the adequate
>> undulation,  by adding material,  shown in purple, on the flat origianl
>> surface of the road:
>>
>>
>> The video also shows all the scripts required to make the square wheel
>> roll over the road while the vehicle´s body,  represented by the green
>> line, stays horizontal and always at the same height.
>>
>> These are some square wheeled vehicles:
>>
>> 4-wheel car
>>
>> 2-wheel bicycle model
>>
>> 3-wheel tricycles
>>
>>
>> Carlos Rabassa
>> Voluntario
>> Red de Apoyo al Plan Ceibal
>> Montevideo, Uruguay

--
Edward Mokurai
(默雷/धर्ममेघशब्दगर्ज/دھرممیگھشبدگر
ج) Cherlin
Silent Thunder is my name, and Children are my nation.
The Cosmos is my dwelling place, the Truth my destination.
http://wiki.sugarlabs.org/go/Replacing_Textbooks

```