Re: [Fwd: LOGO-L> ideas needed!!!]

[mikedoyle@cix.compulink.co.uk (Mike Doyle)]

In-Reply-To: <l03102800afa54b7f96b8@[192.246.43.81]>
Hi Michael, glad you joined in!

My referent was Turtle Geometry and I specifically referred to Abelson & 
diSessa's Turtle Procedure Notation. The Turtle is a different matter all 
together. I would like a Turtle in the image of Machina Speculatrix. 

> The difference is that the turtle does exactly what you tell it to do.

When I apply the model of the computer that I find useful - an instrument 
of *representation* which uniquely provides us with the capability to 
represent process - I can find no place for the notion of *telling* the 
Turtle to do anything. I write a representation of the actions, of Turtle 
or body. This representation may be variously an accurate representation 
or an interpretation. My ability to write a good representation differs 
not one jot, systemically, from my ability to write a good description or 
draw a good illustration. All that has changed is that the computer, as a 
medium, can represent actions - as of stepping round a circle - whereas 
pencil and paper cannot. Debugging is no different from redrafting in 
writing or rubbing out and re-drawing (either an illustration or Chinese 
characters) it is just that the action changes rather than the text or 
picture. 

The real educational challenge of Logo is to the heart of mathematics.

(And you really SHOULD know Geomland - Bojidar Sendov showed it at 
EUROLOGO'91 and LCSI were there!)

Micheal O Duill
EuroLogo Scientific Committee Chairman

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