[squeakland] Expresándonos con Etoys / Expressing ourselves with Etoys

[Bert Freudenberg]

What an awesome project! I'm impressed.

This might be the best combination of turtle graphics and object animation I've ever seen :)

- Bert -

On 29.06.2011, at 23:51, Carlos Rabassa wrote:

> 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:
> 
> http://www.youtube.com/watch?v=2gDMPYPrxmY
> 
> 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
> http://www.youtube.com/watch?v=ZwgvjTDgFxM
> 
> 2-wheel bicycle model
> http://www.youtube.com/watch?v=0hs1wcvhguM
> 
> 3-wheel tricycles
> http://www.youtube.com/watch?v=qjUbkzfJGp4&NR=1
> 
> 
> Carlos Rabassa
> Voluntario
> Red de Apoyo al Plan Ceibal
> Montevideo, Uruguay