the concept of mass

> 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 :-).

> 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
> [hidden email]
> http://squeakland.org/mailman/listinfo/squeakland
>

> 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
>>> > _______________________________________________
>>> > Squeakland mailing list
>>> > [hidden email]
>>> > http://squeakland.org/mailman/listinfo/squeakland
>>> >
>>>
>>> _______________________________________________
>>> Squeakland mailing list
>>> [hidden email]
>>> http://squeakland.org/mailman/listinfo/squeakland
>>> <SimpleSprings.005.pr>
>
> ------------------------------------------------------------------------
>
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>  

> On Thursday 10 May 2007 3:06 am, Bert Freudenberg wrote:
>> Check out ODE for Squeak:
>>
>> http://languagegame.org:8080/ggame/15
>>
>> (scroll down a bit to the Etoys section)
>
> I couldn't get ForceField.pr or Hinge.pr to load in SqueakPlugin or  
> in 3.7
> image (dangling references to ODE* classes). Does this mean the  
> demos failed
> to make it to mainstream Etoys image?

> On Thursday 10 May 2007 3:06 am, Bert Freudenberg wrote:
>> Check out ODE for Squeak:
>>
>> http://languagegame.org:8080/ggame/15
>>
>> (scroll down a bit to the Etoys section)
>
> I couldn't get ForceField.pr or Hinge.pr to load in SqueakPlugin or in 3.7
> image (dangling references to ODE* classes). Does this mean the demos failed
> to make it to mainstream Etoys image?
>
> I got 404-ed by SqueakFesta link and the complete zip was about 11MB. I gave
> up.