Hi Tabitha

I don't think the premise of this system is for Python programming to be 
"discovered" while doing it, and I didn't see any claims for this. 


It simple "makes the invisible more visible" when manipulating computer 
entities and invoking processes that are usually shrouded at best.

Systems like Etoys and Scratch need this particular visualization less because 
they have mostly visible objects that are being given behaviors (and which also 
in Etoys' case have visible data structures -- e.g. "Holders" etc -- as well). 
The programmers can see the changes in the already visible objects. (That is 
partly the point in how they are designed for beginners.)


But these systems use a lot of parallel invocations, so one could imagine a 
facility like Bob Balzer's EXDAMS (in the 60s!) that captured all of the 
behavior for a stretch and allow it to be played forward and backward 
deterministically to help the programmer understand what was going on and the 
communications between objects.

I think the main point here is that it really helps any programmer, and 
especially beginners, when the computer can be used to aid both their short 
term memories and abilities in visualizing the consequences of their code.

A system like the Python visualizer is especially useful for low-level 
imperative-type data structure munging programming (and Python is often learned 
in this way).

Cheers,

Alan


>________________________________
> From: Tabitha Roder <[email protected]>
>To: Steve Thomas <[email protected]> 
>Cc: iaep <[email protected]> 
>Sent: Sunday, January 29, 2012 1:29 AM
>Subject: Re: [IAEP] Nice tool for learning Python
> 
>
>On 28 January 2012 17:28, Steve Thomas <[email protected]> wrote:
>
>Just found this: http://people.csail.mit.edu/pgbovine/python/
>>
>>This tool looks like an amazing tool for someone who already understands 
>>programming concepts to teach with but it seems a stretch for someone to 
>>learn on their own with this tool by itself. 
>The first example code is "aliasing" but doesn't explain what a variable is, 
>or a function, or a list. It might be possible to discover these concepts 
>using the simulator but it is probably better explained in words. 
>Does anyone know of a suitable ebook or tutorial which the simulator could be 
>used with? Thinking of the cases where there is no one to guide the student. 
>Thanks
>Tabitha
>
>_______________________________________________
>IAEP -- It's An Education Project (not a laptop project!)
>[email protected]
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>
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