[Squeakland] the concept of mass

[Paulo Drummond]

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
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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
>> > _______________________________________________
>> > Squeakland mailing list
>> > Squeakland at squeakland.org
>> > http://squeakland.org/mailman/listinfo/squeakland
>> >
>>
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