[Squeakland] the concept of mass

[Offray Vladimir Luna Cárdenas]

Hi Paolo,

Please consider to release the companion document as a Free/Open content 
document, may be covered by a Creative Commons Attribution Share Alike 
license. There is a lack of information in Spanish and there is a lot of 
excellent documentation in English which is locked by traditional 
application of copyright.

Cheers and thanks,

Offray

Paulo Drummond escribió:
> Thanks, Alan
>
> Great idea. I should use some (accel. plotting) on my "experiment" 
> (attached). it can be opened w/ version 3.8. I'm writing a companion 
> document - a step-by-step like in "Powerful Ideas" book. As soon I get 
> it working better and with those "enhancements", I send it to the list.
>
> My ultimate goal is to put kids to think a Newton's Cradle as an 
> energy transmission device.
>
> cheers,
> Paulo
> On May 10, 2007, at 1:41 AM, Alan Kay wrote:
>
>> But consider this Etoy (run in the OLPC version of Etoys) and also 
>> take a look at Takashi Yamamiya's site and work over the last few years.
>>
>> Cheers,
>>
>> Alan
>>
>> ------------
>>
>> At 04:33 PM 5/9/2007, Paulo Drummond wrote:
>>> Great!
>>>
>>> A huge work to be done (if in Squeak) but it can be fun..;-)
>>>
>>> thanks for the link.
>>>
>>> cheers,
>>> Paulo
>>>
>>> On May 9, 2007, at 5:04 PM, subbukk wrote:
>>>
>>> > On Tuesday 08 May 2007 9:11 pm, Paulo Drummond wrote:
>>> >> Hi all,
>>> >>
>>> >> Following "Powerful Ideas..." - the great book by Kim & BJ, I'm
>>> >> trying to introduce the concept of mass (or weight, for 
>>> simplicity of
>>> >> kid's undestanding), to enhance a project about pendula and energy.
>>> >>
>>> >> Any ideas?
>>> > Excellent idea. This would allow kids to simulate planets, 
>>> satellites,
>>> > collisions and so on.
>>> >
>>> > Sodaconstructor  (http://www.sodaplay.com) uses just three objects
>>> > - mass
>>> > (fixed or free), a spring (a stretchable line connecting two
>>> > masses) and a
>>> > muscle (line connecting masses that stretches and shrinks
>>> > periodically) - and
>>> > then four controls - gravity, friction, elasticity and an
>>> > activation wave for
>>> > a muscle - to create very interesting "creatures". Be warned, this
>>> > is very
>>> > addictive :-).
>>> >
>>> > Regards .. Subbu
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>>> >
>>>
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